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* Merge Upstream (#4) * crypto/rand, internal/syscall/unix: add support for getrandom syscall on solaris The getrandom syscall is available on Solaris and Illumos, see https://docs.oracle.com/cd/E88353_01/html/E37841/getrandom-2.html and https://illumos.org/man/2/getrandom Change-Id: Id1c65d6a5b2fbc80d20b43d8b32dab137ca950ca Reviewed-on: https://go-review.googlesource.com/c/go/+/299134 Trust: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> * docs: clarify when APIs use context.Background. The Go standard library retrofitted context support onto existing APIs using context.Background and later offered variants that directly supported user-defined context value specification. This commit makes that behavior clear in documentation and suggests context-aware alternatives if the user is looking for one. An example motivation is supporting code for use in systems that expect APIs to be cancelable for lifecycle correctness or load shedding/management reasons, as alluded to in https://blog.golang.org/context-and-structs. Updates #44143 Change-Id: I2d7f954ddf9b48264d5ebc8d0007058ff9bddf14 Reviewed-on: https://go-review.googlesource.com/c/go/+/296152 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Jean de Klerk <deklerk@google.com> Trust: Jean de Klerk <deklerk@google.com> Run-TryBot: Jean de Klerk <deklerk@google.com> TryBot-Result: Go Bot <gobot@golang.org> * cmd: move GOEXPERIMENT knob from make.bash to cmd/go This CL changes GOEXPERIMENT to act like other GO[CONFIG] environment variables. Namely, that it can be set at make.bash time to provide a default value used by the toolchain, but then can be manually set when running either cmd/go or the individual tools (compiler, assembler, linker). For example, it's now possible to test rsc.io/tmp/fieldtrack by simply running: GOEXPERIMENT=fieldtrack go test -gcflags=-l rsc.io/tmp/fieldtrack \ -ldflags=-k=rsc.io/tmp/fieldtrack.tracked without needing to re-run make.bash. (-gcflags=-l is needed because the compiler's inlining abilities have improved, so calling a function with a for loop is no longer sufficient to suppress inlining.) Fixes #42681. Change-Id: I2cf8995d5d0d05f6785a2ee1d3b54b2cfb3331ca Reviewed-on: https://go-review.googlesource.com/c/go/+/300991 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Bryan C. Mills <bcmills@google.com> * internal/poll: fix some grammar errors Change-Id: I25a6424bce9d372fa46e8bdd856095845d3397bf Reviewed-on: https://go-review.googlesource.com/c/go/+/300889 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> * all: remove duplicate words Change-Id: Ib0469232a2b69a869e58d5d24990ad74ac96ea56 GitHub-Last-Rev: eb38e049ee1e773392ff3747e1eb2af20dd50dcd GitHub-Pull-Request: golang/go#44805 Reviewed-on: https://go-review.googlesource.com/c/go/+/299109 Trust: Emmanuel Odeke <emmanuel@orijtech.com> Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Bryan C. Mills <bcmills@google.com> * all: add internal/itoa package This replaces five implementations scattered across low level packages. (And I plan to use it in a sixth soon.) Three of the five were byte-for-byte identical. Change-Id: I3bbbeeac63723a487986c912b604e10ad1e042f4 Reviewed-on: https://go-review.googlesource.com/c/go/+/301549 Trust: Josh Bleecher Snyder <josharian@gmail.com> Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com> * internal/poll: eliminate the redundant type conversions of FD.Sysfd Change-Id: Ib75662f717320510319c696520e645f54eec97f7 Reviewed-on: https://go-review.googlesource.com/c/go/+/301569 Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> * crypto/tls: add HandshakeContext method to Conn Adds the (*tls.Conn).HandshakeContext method. This allows us to pass the context provided down the call stack to eventually reach the tls.ClientHelloInfo and tls.CertificateRequestInfo structs. These contexts are exposed to the user as read-only via Context() methods. This allows users of (*tls.Config).GetCertificate and (*tls.Config).GetClientCertificate to use the context for request scoped parameters and cancellation. Replace uses of (*tls.Conn).Handshake with (*tls.Conn).HandshakeContext where appropriate, to propagate existing contexts. Fixes #32406 Change-Id: I259939c744bdc9b805bf51a845a8bc462c042483 Reviewed-on: https://go-review.googlesource.com/c/go/+/295370 Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Trust: Katie Hockman <katie@golang.org> Reviewed-by: Filippo Valsorda <filippo@golang.org> * crypto/tls: remove flaky cancellation test This will be reintroduced again once the source of the flakiness has been determined and fixed. Fixes #45084 Change-Id: I6677b27fcd71e8c9bb8edbe8e3be70e5a271ebd3 Reviewed-on: https://go-review.googlesource.com/c/go/+/302569 Trust: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> Run-TryBot: Katie Hockman <katie@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> * crypto/rand, internal/syscall/unix: add support for getentropy syscall on darwin The getentropy syscall is available on macOS since version 10.12, which is the minimum required version since Go 1.15. Change-Id: I294259af0b11df9669e4dc5fa891d2f2f039d91a Reviewed-on: https://go-review.googlesource.com/c/go/+/302489 Trust: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> * [dev.fuzz] internal/fuzz: add minimization of []byte This works by minimizing for a maximum of one minute. We may consider making this customizable in the future. This only minimizes []byte inputs which caused a recoverable error. In the future, it should support minimizing other appopriate types, and minimizing types which caused non-recoverable errors (though this is much more expensive). The code in internal/fuzz/worker.go is copied from, or heavily inspired by, code originally authored by Dmitry Vyukov and Josh Bleecher Snyder as part of the go-fuzz project. Thanks to them for their contributions. See https://github.com/dvyukov/go-fuzz. Change-Id: I93dbac7ff874d6d0c1b9b9dda23930ae9921480c Reviewed-on: https://go-review.googlesource.com/c/go/+/298909 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * all: explode GOEXPERIMENT=regabi into 5 sub-experiments This separates GOEXPERIMENT=regabi into five sub-experiments: regabiwrappers, regabig, regabireflect, regabidefer, and regabiargs. Setting GOEXPERIMENT=regabi now implies the working subset of these (currently, regabiwrappers, regabig, and regabireflect). This simplifies testing, helps derisk the register ABI project, and will also help with performance comparisons. This replaces the -abiwrap flag to the compiler and linker with the regabiwrappers experiment. As part of this, regabiargs now enables registers for all calls in the compiler. Previously, this was statically disabled in regabiEnabledForAllCompilation, but now that we can control it independently, this isn't necessary. For #40724. Change-Id: I5171e60cda6789031f2ef034cc2e7c5d62459122 Reviewed-on: https://go-review.googlesource.com/c/go/+/302070 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-by: David Chase <drchase@google.com> * [dev.fuzz] testing: print logs and error messages when fuzzing Also improve the error messages for the use of testing.F functions inside the Fuzz function. Change-Id: I5fa48f8c7e0460a1da89a49a73e5af83c544e549 Reviewed-on: https://go-review.googlesource.com/c/go/+/298849 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * [dev.fuzz] internal/fuzz: reduce allocation in the mutator When mutating a byte slice, mutate in place, and only allocate once if the slice's capacity is less than the maximum size. mutateBytes already should not allocate; we check a post-condition that the slice's data pointer does not change. This speeds up the mutator from 4 ms per value to 200-600 ns. For example: goos: darwin goarch: amd64 pkg: internal/fuzz cpu: Intel(R) Core(TM) i7-8559U CPU @ 2.70GHz BenchmarkMutatorBytes/1-8 5908735 275.3 ns/op BenchmarkMutatorBytes/10-8 5198473 282.0 ns/op BenchmarkMutatorBytes/100-8 4304750 233.9 ns/op BenchmarkMutatorBytes/1000-8 4623988 295.2 ns/op BenchmarkMutatorBytes/10000-8 4252104 458.5 ns/op BenchmarkMutatorBytes/100000-8 1236751 950.8 ns/op PASS ok internal/fuzz 12.993s Change-Id: I4bf2a04be6c648ef440af2c62bf0ffa3d310172c Reviewed-on: https://go-review.googlesource.com/c/go/+/306675 Trust: Jay Conrod <jayconrod@google.com> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Jay Conrod <jayconrod@google.com> Reviewed-by: Katie Hockman <katie@golang.org> * all: update references to symbols moved from io/ioutil to io Update references missed in CL 263142. For #41190 Change-Id: I778760a6a69bd0440fec0848bdef539c9ccb4ee1 GitHub-Last-Rev: dda42b09fff36dc08ec1cdec50cc19e3da5058e5 GitHub-Pull-Request: golang/go#42874 Reviewed-on: https://go-review.googlesource.com/c/go/+/273946 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Trust: Cherry Zhang <cherryyz@google.com> * net: make ErrClosed and ParseError implement net.Error Fixes #45357 Change-Id: Iafd41fff232a89be4c88d4b1d66bc3c04d888bcc Reviewed-on: https://go-review.googlesource.com/c/go/+/307030 Trust: Ian Lance Taylor <iant@golang.org> Trust: Josh Bleecher Snyder <josharian@gmail.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> * [dev.fuzz] internal/fuzz: small bug fixes and refactors to minimization This fixes a few issues that were being masked since log statements weren't being printed to stdout. Now that they are, fix the bugs, and update the tests. Also includes a few small refactors which will make minimizing non-recoverable errors easier. Change-Id: Ie2fd2e5534b3980317e1e1f3fd8e04750988c17f Reviewed-on: https://go-review.googlesource.com/c/go/+/307810 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * internal/goexperiment,cmd: consolidate GOEXPERIMENTs into a new package Currently there's knowledge about the list of GOEXPERIMENTs in a few different places. This CL introduces a new package and consolidates the list into one place: the internal/goexperiment.Flags struct type. This package gives us a central place to document the experiments as well as the GOEXPERIMENT environment variable itself. It will also give us a place to put built-time constants derived from the enabled experiments. Now the objabi package constructs experiment names by reflecting over this struct type rather than having a separate list of these names (this is similar to how the compiler handles command-line flags and debug options). We also expose a better-typed API to the toolchain for propagating enabled experiments. Change-Id: I06e026712b59fe2bd7cd11a869aedb48ffe5a4b7 Reviewed-on: https://go-review.googlesource.com/c/go/+/307817 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> * internal/goexperiment: consolidate experiment-enabled constants Currently, we have boolean and integral constants for GOEXPERIMENTs in various places. Consolidate these into automatically generated constants in the internal/goexperiment package. Change-Id: I42a49aba2a3b4c722fedea23a613162cd8a67bee Reviewed-on: https://go-review.googlesource.com/c/go/+/307818 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> * cmd/internal/objabi: make GOEXPERIMENT be a diff from default experiments Right now the rules around handling default-on experiments are complicated and a bit inconsistent. Notably, objabi.GOEXPERIMENT is set to a comma-separated list of enabled experiments, but this may not be the string a user should set the GOEXPERIMENT environment variable to get that list of experiments: if an experiment is enabled by default but gets turned off by GOEXPERIMENT, then the string we report needs to include "no"+experiment to capture that default override. This complication also seeps into the version string we print for "go tool compile -V", etc. This logic is further complicated by the fact that it only wants to include an experiment string if the set of experiments varies from the default. This CL rethinks how we handle default-on experiments. Now that experiment state is all captured in a struct, we can simplify a lot of this logic. objabi.GOEXPERIMENT will be set based on the delta from the default set of experiments, which reflects what a user would actually need to pass on the command line. Likewise, we include this delta in the "-V" output, which simplifies this logic because if there's nothing to show in the version string, the delta will be empty. Change-Id: I7ed307329541fc2c9f90edd463fbaf8e0cc9e8ee Reviewed-on: https://go-review.googlesource.com/c/go/+/307819 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> * runtime,cmd/link: include GOEXPERIMENTs in runtime.Version(), "go version X" This adds the set of GOEXPERIMENTs to the build version if it differs from the default set of experiments. This exposes the experiment settings via runtime.Version() and "go version <binary>". Change-Id: I143dbbc50f66a4cf175469199974e18848075af6 Reviewed-on: https://go-review.googlesource.com/c/go/+/307820 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> * [dev.fuzz] internal/fuzz: add stub for coverage This change only includes a stub for the function which will hook into the runtime to expose coverage instrumentation while we're fuzzing. Previously, we discussed an exported API named FuzzCoverage, but since this is within the internal/fuzz package, simply naming it coverage seems appropriate. Change-Id: Iba3240e53e0c4c434e937aa9bb1711a44fec9975 Reviewed-on: https://go-review.googlesource.com/c/go/+/308191 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Jay Conrod <jayconrod@google.com> * [dev.fuzz] internal/fuzz: add mutator for int types Assuming this works, will follow up with another CL that mutates other types. Change-Id: Id61acaacd56ca41e3be52e400f8f768672313bbb Reviewed-on: https://go-review.googlesource.com/c/go/+/308169 Trust: Katie Hockman <katie@golang.org> Trust: Jay Conrod <jayconrod@google.com> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * [dev.fuzz] internal/fuzz: implement coverage and trace instrumentation This CL makes two main changes to allow internal/fuzz to support -d=libfuzzer instrumentation: 1. It extends cmd/link to define _counters and _ecounters symbols so internal/fuzz can find the coverage counters. 2. It adds "trace" stub functions that implement the ABI expected by cmd/compile for comparison instrumentation. N.B., that -tags=libfuzzer should *not* be set, so that internal/fuzz's trace routines will be used instead of runtime's libfuzzer trampolines. Also, the current implementation doesn't support multi-module builds (i.e., compiling a Go program that spans multiple .so/.dll files). Presumably this isn't an issue, since "go test -fuzz" will need to recompile the binary with instrumentation anyway so it can make sure to always use a single-module build. But we can revisit this if necessary. Change-Id: I9b1619119ab7477bebcfd5988b4b60499a7ab0d7 Reviewed-on: https://go-review.googlesource.com/c/go/+/308289 Trust: Matthew Dempsky <mdempsky@google.com> Trust: Katie Hockman <katie@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> * [dev.fuzz] internal/fuzz: don't count time spent loading corpus The -fuzztime flag tells us how much time to spend fuzzing, not counting time spent running the seed corpus. We shouldn't count time spent loading the cache either. If the cache is large, the time limit may be exceeded before the coordinator starts the workers. Change-Id: If00435faa5d24aabdb9003ebb9337fa2e47f22b6 Reviewed-on: https://go-review.googlesource.com/c/go/+/307310 Trust: Jay Conrod <jayconrod@google.com> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Jay Conrod <jayconrod@google.com> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.fuzz] internal/fuzz: improve cancellation in worker event loops worker.runFuzzing now accepts a Context, used for cancellation instead of doneC (which is removed). This is passed down through workerClient RPC methods (ping, fuzz). workerClient RPC methods now wrap the call method, which handles marshaling and cancellation. Both workerClient.call and workerServer.serve should return quickly when their contexts are cancelled. Turns out, closing the pipe won't actually unblock a read on all platforms. Instead, we were falling back to SIGKILL in worker.stop, which works but takes longer than necessary. Also fixed missing newline in log message. Change-Id: I7b5ae54d6eb9afd6361a07759f049f048952e0cc Reviewed-on: https://go-review.googlesource.com/c/go/+/303429 Trust: Jay Conrod <jayconrod@google.com> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Jay Conrod <jayconrod@google.com> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.fuzz] testing: let -fuzztime specify a number of executions -fuzztime now works similarly to -benchtime: if it's given a string with an "x" suffix (as opposed to "s" or some other unit of duration), the fuzzing system will generate and run a maximum number of values. This CL also implements tracking and printing counts, since most of the work was already done. Change-Id: I013007984b5adfc1a751c379dc98c8d46b4a97e9 Reviewed-on: https://go-review.googlesource.com/c/go/+/306909 Trust: Jay Conrod <jayconrod@google.com> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Jay Conrod <jayconrod@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.fuzz] testing: support T.Parallel in fuzz functions While running the seed corpus, T.Parallel acts like it does in subtests started with T.Run: it blocks until all other non-parallel subtests have finished, then unblocks when the barrier chan is closed. A semaphore (t.context.waitParallel) limits the number of tests that run concurrently (determined by -test.parallel). While fuzzing, T.Parallel has no effect, other than asserting that it can't be called multiple times. We already run different inputs in concurrent processes, but we can't run inputs concurrently in the same process if we want to attribute crashes to specific inputs. Change-Id: I2bac08e647e1d92ea410c83c3f3558a033fe3dd1 Reviewed-on: https://go-review.googlesource.com/c/go/+/300449 Trust: Jay Conrod <jayconrod@google.com> Run-TryBot: Jay Conrod <jayconrod@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.fuzz] internal/fuzz: move CoordinateFuzzing args into struct type This improves readability a bit, and it should help with compatibility for future clients when arguments are added or reordered. Unfortunately, testing still can't import internal/fuzz, so the interface there can't use this type. Change-Id: I4cda2347884defcbbfc2bd01ab5b4a901d91549c Reviewed-on: https://go-review.googlesource.com/c/go/+/308192 Trust: Jay Conrod <jayconrod@google.com> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Jay Conrod <jayconrod@google.com> Reviewed-by: Katie Hockman <katie@golang.org> * all: fix spellings This follows the spelling choices that the Go project has made for English words. https://github.com/golang/go/wiki/Spelling Change-Id: Ie7c586d2cf23020cb492cfff58c0831d2d8d3a78 GitHub-Last-Rev: e16a32cd225a275f73d236bcb33703986d110ded GitHub-Pull-Request: golang/go#45442 Reviewed-on: https://go-review.googlesource.com/c/go/+/308291 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Trust: Emmanuel Odeke <emmanuel@orijtech.com> * internal/poll: fix the intermittent build failures with pipe pool Correlative CL 308089 Fixes #45059 Change-Id: I1ff9fbf64e6620d651f287ba2a28d40f964d78a3 Reviewed-on: https://go-review.googlesource.com/c/go/+/308329 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Trust: Emmanuel Odeke <emmanuel@orijtech.com> * internal/poll: ensure that newPoolPipe doesn't return a nil pointer The function could occasionally return a nil pointer as a non-nil interface, confusing the calling code. Fixes #45520 Change-Id: Ifd35613728efa2cee9903177e85d369155074804 Reviewed-on: https://go-review.googlesource.com/c/go/+/309429 Trust: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Andy Pan <panjf2000@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> * [dev.fuzz] internal/fuzz: allow float types to be integer literals Previously, something like `float64(0)` would fail to decode since the 0 value is considered an integer literal, and the float64 parsing code required a float literal. Be more flexible here since an integer can always be converted to a float. Change-Id: Id1c53ef2e8a9748a4f71176b00b453a329af4ade Reviewed-on: https://go-review.googlesource.com/c/go/+/309032 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * [dev.fuzz] internal/fuzz: mutate other types Change-Id: I8042c17268aca0a9bb2f692317207bb864b18680 Reviewed-on: https://go-review.googlesource.com/c/go/+/309033 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * internal/execabs: replace ioutil.WriteFile with os.WriteFile Fixes #45532. Change-Id: I844acd50d6fa1ce918969bbb52f79dd7412d289f Reviewed-on: https://go-review.googlesource.com/c/go/+/309350 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Trust: Tobias Klauser <tobias.klauser@gmail.com> * runtime: move next_gc and last_next_gc into gcControllerState This change moves next_gc and last_next_gc into gcControllerState under the names heapGoal and lastHeapGoal respectively. These are fundamentally GC pacer related values, and so it makes sense for them to live here. Partially generated by rf ' ex . { memstats.next_gc -> gcController.heapGoal memstats.last_next_gc -> gcController.lastHeapGoal } ' except for updates to comments and gcControllerState methods, where they're accessed through the receiver, and trace-related renames of NextGC -> HeapGoal, while we're here. For #44167. Change-Id: I1e871ad78a57b01be8d9f71bd662530c84853bed Reviewed-on: https://go-review.googlesource.com/c/go/+/306603 Trust: Michael Knyszek <mknyszek@google.com> Run-TryBot: Michael Knyszek <mknyszek@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Michael Pratt <mpratt@google.com> * internal/bytealg: port more performance-critical functions to ABIInternal CL 308931 ported several runtime assembly functions to ABIInternal so that compiler-generated ABIInternal calls don't go through ABI wrappers, but it missed the runtime assembly functions that are actually defined in internal/bytealg. This eliminates the cost of wrappers for the BleveQuery and GopherLuaKNucleotide benchmarks, but there's still more to do for Tile38. 0-base 1-wrappers sec/op sec/op vs base BleveQuery 6.507 ± 0% 6.477 ± 0% -0.46% (p=0.004 n=20) GopherLuaKNucleotide 30.39 ± 1% 30.34 ± 0% ~ (p=0.301 n=20) Tile38IntersectsCircle100kmRequest 1.038m ± 1% 1.080m ± 2% +4.03% (p=0.000 n=20) For #40724. Change-Id: I0b722443f684fcb997b1d70802c5ed4b8d8f9829 Reviewed-on: https://go-review.googlesource.com/c/go/+/310184 Trust: Austin Clements <austin@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Cherry Zhang <cherryyz@google.com> * bytes: add asm implementation for index on ppc64x This adds an asm implementation of index on ppc64le and ppc64. It results in a significant improvement in some of the benchmarks that use bytes.Index. The implementation is based on a port of the s390x asm implementation. Comments on the design are found with the code. The following improvements occurred on power8: Index/10 70.7ns ± 0% 18.8ns ± 0% -73.4 Index/32 165ns ± 0% 95ns ± 0% -42.6 Index/4K 9.23µs ± 0% 4.91µs ± 0% -46 Index/4M 9.52ms ± 0% 5.10ms ± 0% -46.4 Index/64M 155ms ± 0% 85ms ± 0% -45.1 Count/10 83.0ns ± 0% 32.1ns ± 0% -61.3 Count/32 178ns ± 0% 109ns ± 0% -38.8 Count/4K 9.24µs ± 0% 4.93µs ± 0% -46 Count/4M 9.52ms ± 0% 5.10ms ± 0% -46.4 Count/64M 155ms ± 0% 85ms ± 0% -45.1 IndexHard1 2.36ms ± 0% 0.13ms ± 0% -94.4 IndexHard2 2.36ms ± 0% 1.28ms ± 0% -45.8 IndexHard3 2.36ms ± 0% 1.19ms ± 0% -49.4 IndexHard4 2.36ms ± 0% 2.35ms ± 0% -0.1 CountHard1 2.36ms ± 0% 0.13ms ± 0% -94.4 CountHard2 2.36ms ± 0% 1.28ms ± 0% -45.8 CountHard3 2.36ms ± 0% 1.19ms ± 0% -49.4 IndexPeriodic/IndexPeriodic2 146µs ± 0% 8µs ± 0% -94 IndexPeriodic/IndexPeriodic4 146µs ± 0% 8µs ± 0% -94 Change-Id: I7dd2bb7e278726e27f51825ca8b2f8317d460e60 Reviewed-on: https://go-review.googlesource.com/c/go/+/309730 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by: Paul Murphy <murp@ibm.com> Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org> Trust: Carlos Eduardo Seo <carlos.seo@linaro.org> Trust: Lynn Boger <laboger@linux.vnet.ibm.com> * internal/goexperiment: move baseline configuration to objabi We need to adjust baseline experiment configuration based on the configured GOOS and GOARCH, so it can't live in goexperiment. Move it to objabi. Change-Id: I65f4ce56902c6c1a82735050773c58f2d1320cc6 Reviewed-on: https://go-review.googlesource.com/c/go/+/310169 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> * internal/buildcfg: move build configuration out of cmd/internal/objabi The go/build package needs access to this configuration, so move it into a new package available to the standard library. Change-Id: I868a94148b52350c76116451f4ad9191246adcff Reviewed-on: https://go-review.googlesource.com/c/go/+/310731 Trust: Russ Cox <rsc@golang.org> Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: Jay Conrod <jayconrod@google.com> * crypto/tls: fix flaky handshake cancellation tests Simplified both tests significantly by removing logic for writing the client/server side messages. The flake was likely because of a race between the closing of the local pipe from inside the test and closing of the pipe from within the handshakeContext goroutine. Wait to close the local pipe in the test until after the test has finished running. Fixes #45106 Fixes #45299 Change-Id: If7ca75aeff7df70cda03c934fa9d8513276d465d Reviewed-on: https://go-review.googlesource.com/c/go/+/305250 Trust: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> Trust: Katie Hockman <katie@golang.org> Reviewed-by: Filippo Valsorda <filippo@golang.org> * [dev.fuzz] internal/fuzz: minimize non-recoverable errors Assuming that this works for non-recoverable errors, there will likely be a follow-up CL which refactors the minimization for recoverable errors to use the same RPC flow (since that more easily allows the worker to tell the coordinator that it's minimizing and shouldn't send more inputs to other workers to fuzz). Change-Id: I32ac7cec4abe2d4c345c0ee77315233047efb1fb Reviewed-on: https://go-review.googlesource.com/c/go/+/309509 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * internal/buildcfg: make regabi an alias for regabi sub-experiments Currently, specifying GOEXPERIMENT=regabi will turn on all regabi sub-experiments, but GOEXPERIMENT=noregabi won't turn anything off. Regabi also isn't a "real" experiment in the sense that nothing in the code base should depend on it as an experiment flag (it should depend on the appropriate sub-experiments). Hence, drop Regabi from goexperiment.Flags and make "regabi" in GOEXPERIMENT be a real alias for all of the sub-flags, so regabi will turn on all of the sub-flags and noregabi will turn off all of the sub-flags. This way, once we enable the sub-experiments in the baseline configuration, it will be easy to turn off with "noregabi". For #40724. Change-Id: I0fb95be42f756d412e729a396be607d629ae2bab Reviewed-on: https://go-review.googlesource.com/c/go/+/310609 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> * internal/buildcfg: make regabi enable regabiargs For #40724. Change-Id: I6e9d7eb91883857479699972a974a39ce3d9d2cc Reviewed-on: https://go-review.googlesource.com/c/go/+/310849 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Cherry Zhang <cherryyz@google.com> * internal/buildcfg: enable regabiwrappers by default For #40724. Change-Id: I75d6ba2d3e4e2d858eea8053efd0f3fd4439dab7 Reviewed-on: https://go-review.googlesource.com/c/go/+/310172 Trust: Austin Clements <austin@google.com> Trust: Russ Cox <rsc@golang.org> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> * internal/buildcfg: enable regabig by default For #40724. Change-Id: Ibf4ff8b24b501813839657ac195b909682ac7d0b Reviewed-on: https://go-review.googlesource.com/c/go/+/310173 Trust: Austin Clements <austin@google.com> Trust: Russ Cox <rsc@golang.org> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> * net: pass MSG_CMSG_CLOEXEC flag in ReadMsgUnix As mentioned in #42765, calling "recvmsg" syscall on Linux should come with "MSG_CMSG_CLOEXEC" flag. For other systems which not supports "MSG_CMSG_CLOEXEC". ReadMsgUnix() would check the header. If the header type is "syscall.SCM_RIGHTS", then ReadMsgUnix() would parse the SocketControlMessage and call each fd with "syscall.CloseOnExec" Fixes #42765 Change-Id: I74347db72b465685d7684bf0f32415d285845ebb GitHub-Last-Rev: ca59e2c9e0e8de1ae590e9b6dc165cb768a574f5 GitHub-Pull-Request: golang/go#42768 Reviewed-on: https://go-review.googlesource.com/c/go/+/272226 Trust: Emmanuel Odeke <emmanuel@orijtech.com> Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com> * internal/buildcfg: enable regabireflect by default For #40724. Change-Id: Ib3e4a67c3826176f0d51619754270022344ee194 Reviewed-on: https://go-review.googlesource.com/c/go/+/310174 Trust: Austin Clements <austin@google.com> Trust: Russ Cox <rsc@golang.org> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> * internal/buildcfg: enable regabidefer by default For #40724. Change-Id: If3a66c0e29cb20dd29ac13c8d00aa46ee279ab97 Reviewed-on: https://go-review.googlesource.com/c/go/+/310175 Trust: Austin Clements <austin@google.com> Trust: Russ Cox <rsc@golang.org> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> * internal/buildcfg: enable regabiargs by default For #40724. Change-Id: I7509668478d20dd625f210e5a33f5d896a76d6b5 Reviewed-on: https://go-review.googlesource.com/c/go/+/310176 Trust: Austin Clements <austin@google.com> Trust: Russ Cox <rsc@golang.org> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> * internal/poll, net: fix comments regarding accept and sysSocket The implementation of accept was moved from package net to internal/poll in CL 36799. Change-Id: I6e5964e0ee22e9c84bc444860cdd497817451fec Reviewed-on: https://go-review.googlesource.com/c/go/+/311571 Trust: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> * internal/bytealg: add power9 version of bytes index This adds a power9 version of the bytes.Index function for little endian. Here is the improvement on power9 for some of the Index benchmarks: Index/10 -0.14% Index/32 -3.19% Index/4K -12.66% Index/4M -13.34% Index/64M -13.17% Count/10 -0.59% Count/32 -2.88% Count/4K -12.63% Count/4M -13.35% Count/64M -13.17% IndexHard1 -23.03% IndexHard2 -13.01% IndexHard3 -22.12% IndexHard4 +0.16% CountHard1 -23.02% CountHard2 -13.01% CountHard3 -22.12% IndexPeriodic/IndexPeriodic2 -22.85% IndexPeriodic/IndexPeriodic4 -23.15% Change-Id: Id72353e2771eba2efbb1544d5f0be65f8a9f0433 Reviewed-on: https://go-review.googlesource.com/c/go/+/311380 Run-TryBot: Carlos Eduardo Seo <carlos.seo@linaro.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org> Trust: Lynn Boger <laboger@linux.vnet.ibm.com> * cmd/compile, internal/abi: add FuncPCABIxxx intrinsics When ABI wrappers are used, there are cases where in Go code we need the PC of the defined function instead of the ABI wrapper. Currently we work around this by define such functions as ABIInternal, even if they do not actually follow the internal ABI. This CL introduces internal/abi.FuncPCABIxxx functions as compiler intrinsics, which return the underlying defined function's entry PC if the argument is a direct reference of a function of the expected ABI, and reject it if it is of a different ABI. As a proof of concept, change runtime.goexit back to ABI0 and use internal/abi.FuncPCABI0 to retrieve its PC. Updates #44065. Change-Id: I02286f0f9d99e6a3090f9e8169dbafc6804a2da6 Reviewed-on: https://go-review.googlesource.com/c/go/+/304232 Trust: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Than McIntosh <thanm@google.com> * [dev.fuzz] internal/fuzz: allow setting pcg seed via GODEBUG Format is "fuzzseed=123". Change-Id: Idb314270c8fd4307149c8503e13424b653ec4b0a Reviewed-on: https://go-review.googlesource.com/c/go/+/313651 Trust: Roland Shoemaker <roland@golang.org> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Roland Shoemaker <roland@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.fuzz] internal/fuzz: add extra []byte mutators Adds four []byte mutators which: * insert a chunk of constant bytes * overwirtes a chunk with constant bytes * shuffle a range of bytes * swaps two chunks Also updates the 'set byte to random value' mutator to use XOR in order to avoid a no-op. Additionally updates the rng call which chooses the []byte mutators so all the available mutators are used. Change-Id: I0703518922952f4b1c81b19b196ee91c73b0d5f8 Reviewed-on: https://go-review.googlesource.com/c/go/+/313270 Trust: Roland Shoemaker <roland@golang.org> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Roland Shoemaker <roland@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> * internal/buildcfg: enable regabi for Android This will permit us to write ABIInternal assembler code for linux-amd64. For #40724 Change-Id: I681866651554eda4229d6faa7f0c1ba42d07e57d Reviewed-on: https://go-review.googlesource.com/c/go/+/315390 Trust: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> * internal/syscall/unix: use internal/abi.FuncPC for syscall wrapper Following CL 313230, this is for internal/syscall/unix package. Updates #45702. Change-Id: Ie6d8c1923dfeae56896212393c5c2a6e257648d2 Reviewed-on: https://go-review.googlesource.com/c/go/+/316649 Trust: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> Reviewed-by: Than McIntosh <thanm@google.com> TryBot-Result: Go Bot <gobot@golang.org> * internal/buildcfg: set Error instead of panicking All build environment validation sets Error except for the GOEXPERIMENT parser, which panics. Change it to also set Error so that a bad GOEXPERIMENT doesn't cause everything that imports internal/buildcfg to panic on init. Change-Id: Ie9a506ef0978ecb410f2dcd784638f2167354175 Reviewed-on: https://go-review.googlesource.com/c/go/+/310970 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * [dev.fuzz] internal/fuzz: don't panic if types change There was a bug where if the types to fuzz were different from the types in a file in the on-disk corpus, then the code would panic. We thought this case was handled, but the final `continue` in the nested loop still allowed the invalid entry to be added to the corpus. Pulling the validation into a helper function makes this less brittle. Change-Id: I401346f890ea30ab7cff9640cb555da2e3ff8cc6 Reviewed-on: https://go-review.googlesource.com/c/go/+/313810 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * crypto/tls: enforce ALPN overlap when negotiated on both sides During the TLS handshake if the server doesn't support any of the application protocols requested by the client, send the no_application_protocol alert and abort the handshake on the server side. This enforces the requirements of RFC 7301. Change-Id: Iced2bb5c6efc607497de1c40ee3de9c2b393fa5d Reviewed-on: https://go-review.googlesource.com/c/go/+/289209 Trust: Roland Shoemaker <roland@golang.org> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Roland Shoemaker <roland@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Filippo Valsorda <filippo@golang.org> * internal/poll: cast off the last reference of SplicePipe in test Updates #45059 Change-Id: I9f377abcc7b77136ae6cf4896b968f73c758b559 Reviewed-on: https://go-review.googlesource.com/c/go/+/317510 Reviewed-by: Bryan C. Mills <bcmills@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> * [dev.fuzz] testing,internal/fuzz: prevent unbounded memory growth Usage of f.testContext.match.fullName to generate the test name causes unbounded memory growth, eventually causing the fuzzer to slow down as memory pressure increases. Each time fuzzFn is invoked it generates a unique string and stores it in a map. With the fuzzer running at around 100k executions per second this consumed around ~30GB of memory in a handful of minutes. Instead just use the base name of the test for mutated inputs, a special name for seeded inputs, and the filename for inputs from the input corpus. Change-Id: I083f47df7e82f0c6b0bda244f158233784a13029 Reviewed-on: https://go-review.googlesource.com/c/go/+/316030 Trust: Roland Shoemaker <roland@golang.org> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Roland Shoemaker <roland@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> * crypto/tls: make cipher suite preference ordering automatic We now have a (well, two, depending on AES hardware support) universal cipher suite preference order, based on their security and performance. Peer and application lists are now treated as filters (and AES hardware support hints) that are applied to this universal order. This removes a complex and nuanced decision from the application's responsibilities, one which we are better equipped to make and which applications usually don't need to have an opinion about. It also lets us worry less about what suites we support or enable, because we can be confident that bad ones won't be selected over good ones. This also moves 3DES suites to InsecureCipherSuites(), even if they are not disabled by default. Just because we can keep them as a last resort it doesn't mean they are secure. Thankfully we had not promised that Insecure means disabled by default. Notable test changes: - TestCipherSuiteCertPreferenceECDSA was testing that we'd pick the right certificate regardless of CipherSuite ordering, which is now completely ignored, as tested by TestCipherSuitePreference. Removed. - The openssl command of TestHandshakeServerExportKeyingMaterial was broken for TLS 1.0 in CL 262857, but its golden file was not regenerated, so the test kept passing. It now broke because the selected suite from the ones in the golden file changed. - In TestAESCipherReordering, "server strongly prefers AES-GCM" is removed because there is no way for a server to express a strong preference anymore; "client prefers AES-GCM and AES-CBC over ChaCha" switched to ChaCha20 when the server lacks AES hardware; and finally "client supports multiple AES-GCM" changed to always prefer AES-128 per the universal preference list. * this is going back on an explicit decision from CL 262857, and while that client order is weird and does suggest a strong dislike for ChaCha20, we have a strong dislike for software AES, so it didn't feel worth making the logic more complex - All Client-* golden files had to be regenerated because the ClientHello cipher suites have changed. (Even when Config.CipherSuites was limited to one suite, the TLS 1.3 default order changed.) Fixes #45430 Fixes #41476 (as 3DES is now always the last resort) Change-Id: If5f5d356c0f8d1f1c7542fb06644a478d6bad1e5 Reviewed-on: https://go-review.googlesource.com/c/go/+/314609 Run-TryBot: Filippo Valsorda <filippo@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Roland Shoemaker <roland@golang.org> Trust: Filippo Valsorda <filippo@golang.org> * cmd/compile,reflect: allow longer type names Encode the length of type names and tags in a varint encoding instead of a fixed 2-byte encoding. This allows lengths longer than 65535 (which can happen for large unnamed structs). Removed the alignment check for #14962, it isn't relevant any more since we're no longer reading pointers directly out of this data (it is encoded as an offset which is copied out bytewise). Fixes #44155 Update #14962 Change-Id: I6084f6027e5955dc16777c87b0dd5ea2baa49629 Reviewed-on: https://go-review.googlesource.com/c/go/+/318249 Trust: Keith Randall <khr@golang.org> Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> * [dev.fuzz] internal/fuzz: use coverage instrumentation while fuzzing This change updates the go command behavior when fuzzing to instrument the binary for code coverage, and uses this coverage in the fuzzing engine to determine if an input is interesting. Unfortunately, we can't store and use the coverage data for a given run of `go test` and re-use it the next time we fuzz, since the edges could have changed between builds. Instead, every entry in the seed corpus and the on-disk corpus is run by the workers before fuzzing begins, so that the coordinator can get the baseline coverage for what the fuzzing engine has already found (or what the developers have already provided). Users should run `go clean -fuzzcache` before using this change, to clear out any existing "interesting" values that were in the cache. Previously, every single non-crashing input was written to the on-disk corpus. Now, only inputs that actually expand coverage are written. This change includes a small hack in cmd/go/internal/load/pkg.go which ensures that the Gcflags that were explicitly set in cmd/go/internal/test/test.go don't get cleared out. Tests will be added in a follow-up change, since they will be a bit more involved. Change-Id: Ie659222d44475c6d68fa4a35d37c37cab3619d71 Reviewed-on: https://go-review.googlesource.com/c/go/+/312009 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * all: add //go:build lines to assembly files Don't add them to files in vendor and cmd/vendor though. These will be pulled in by updating the respective dependencies. For #41184 Change-Id: Icc57458c9b3033c347124323f33084c85b224c70 Reviewed-on: https://go-review.googlesource.com/c/go/+/319389 Trust: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> * [dev.fuzz] internal/fuzz: include coverage in logged stats Change-Id: I51ec70b69e802fd0d962ba9544e96e29b1627fef Reviewed-on: https://go-review.googlesource.com/c/go/+/319590 Trust: Roland Shoemaker <roland@golang.org> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Roland Shoemaker <roland@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.fuzz] internal/fuzz: move coverage capture closer to function When instrumented packages intersect with the packages used by the testing or internal/fuzz packages the coverage counters become noisier, as counters will be triggered by non-fuzzed harness code. Ideally counters would be deterministic, as there are many advanced fuzzing strategies that require mutating the input while maintaining static coverage. The simplest way to mitigate this noise is to capture the coverage counters as closely as possible to the invocation of the fuzz target in the testing package. In order to do this add a new function which captures the current values of the counters, SnapshotCoverage. This function copies the current counters into a static buffer, coverageSnapshot, which workerServer.fuzz can then inspect when it comes time to check if new coverage has been found. This method is not foolproof. As the fuzz target is called in a goroutine, harness code can still cause counters to be incremented while the target is being executed. Despite this we do see significant reduction in churn via this approach. For example, running a basic target that causes strconv to be instrumented for 500,000 iterations causes ~800 unique sets of coverage counters, whereas by capturing the counters closer to the target we get ~40 unique sets. It may be possible to make counters completely deterministic, but likely this would require rewriting testing/F.Fuzz to not use tRunner in a goroutine, and instead use it in a blocking manner (which I couldn't figure out an obvious way to do), or by doing something even more complex. Change-Id: I95c2f3b1d7089c3e6885fc7628a0d3a8ac1a99cf Reviewed-on: https://go-review.googlesource.com/c/go/+/320329 Trust: Roland Shoemaker <roland@golang.org> Trust: Katie Hockman <katie@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.fuzz] internal/fuzz: make minimization tests more reliable * Introduced -fuzzminimizetime flag to control the number of time or the number of calls to spend minimizing. Defaults to 60s. Only works for unrecoverable crashes for now. * Moved the count (used by -fuzztime=1000x) into shared memory. Calling workerClient.fuzz resets it, but it will remain after the worker processes crashes. workerClient.minimize resets it once before restarting the worker the first time, but the total number of runs should still be limited during minimization, even after multiple terminations and restarts. * Renamed fuzzArgs.Count to Limit to avoid confusion. * Several other small fixes and refactorings. Change-Id: I03faa4c94405041f6dfe48568e5ead502f8dbbd2 Reviewed-on: https://go-review.googlesource.com/c/go/+/320171 Trust: Jay Conrod <jayconrod@google.com> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Jay Conrod <jayconrod@google.com> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.typeparams] internal/buildcfg: turn on register ABI on all AMD64 platforms Register ABI is already enabled by default on AMD64 on Linux (including Android), macOS, and Windows. This CL enables it on the rest, specifically, on FreeBSD, OpenBSD, NetBSD, DragonflyBSD, Solaris (including Illumos), iOS (simulator), and Plan 9. Change-Id: I80fa20c8bbc8d67b16a19f71b65422e890210ab5 Reviewed-on: https://go-review.googlesource.com/c/go/+/321332 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> * [dev.fuzz] internal/fuzz: remove old TODO Change-Id: I997934ebcde0dee9017c85a0572597855d73cf64 Reviewed-on: https://go-review.googlesource.com/c/go/+/321569 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Roland Shoemaker <roland@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * [dev.typeparams] internal/buildcfg: enable defer/go wrapping everywhere For register ABI, we wrap deferred/go'd function with arguments or results in an argumentless closure, so the runtime can call the function without knowing how to marshal the arguments, or reserving frame for arguments and results. The wrapping mechanism works everywhere, regardless of whether the register ABI is used. And wrapping will simplify the compiler and runtime's implementation for defer and go calls. For example, the compiler will not need to marshal arguments for defer/go calls, the opendefer metadata will not need to contain argument information, and _defer record will be fixed-sized. Enable wrapping everywhere. Change-Id: I2032ba87249ceb686310dc640fb00696669ae912 Reviewed-on: https://go-review.googlesource.com/c/go/+/321958 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> TryBot-Result: Go Bot <gobot@golang.org> * Revert "[dev.fuzz] internal/fuzz: include coverage in logged stats" This reverts commit 54f067812dd870c305daabd22ca190b0f48e672e. Reason for revert: While this is helpful for the engineering team when we're debugging, it might lead to users feeling like the fuzzer is stuck and that there are a lot of edges that are still yet to be reached. In reality, it's very likely that the compiler will instrument more lines of code than are actually reachable by the fuzz target, so showing the ratio between number of edges hit vs. all edges can be misleading. In the future, we may want to consider making this information viewable by a debug flag or something similar. Change-Id: Ied696f8bf644445bad22c872b64daa7add605ac6 Reviewed-on: https://go-review.googlesource.com/c/go/+/322632 Trust: Katie Hockman <katie@golang.org> Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * [dev.fuzz] internal/fuzz,testing: treat panics as recoverable And only log the last panic, not all of them, during minimization. This change makes the worker processes quiet, so now the only process that logs anything is the coordinator. This hides all of the panics caused during minimization of an input which causes a panic. This change also alters the usage of tRunner such that we now recover from recoverable panics instead of terminating the process. This results in larger stack traces, since we include a bit more of the trace within testing. There is a TODO to see if it's possible to slice the stack up so that it is somewhat more informative. Change-Id: Ic85eabd2e70b078412fbb88adf424a8da25af876 Reviewed-on: https://go-review.googlesource.com/c/go/+/321230 Trust: Roland Shoemaker <roland@golang.org> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Roland Shoemaker <roland@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.fuzz] internal/fuzz: support minimization of strings, integers, and floats Adds support for minimizing strings using the same logic as byte slices as well as minimizing both signed and unsigned integers and floats using extremely basic logic. A more complex approach is probably warranted in the future, but for now this should be _good enough_. Change-Id: Ibc6c3d6ae82685998f571aa2c1ecea2f85c2708b Reviewed-on: https://go-review.googlesource.com/c/go/+/320669 Trust: Roland Shoemaker <roland@golang.org> Trust: Katie Hockman <katie@golang.org> Run-TryBot: Roland Shoemaker <roland@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> * [dev.typeparams] internal/abi: define ARM64 register ABI constants Change-Id: I9cdf0f2b6c1739f13a859a8e37351f8ecd77804a Reviewed-on: https://go-review.googlesource.com/c/go/+/323932 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> * [dev.typeparams] internal/buildcfg: allow regabi GOEXPERIMENTs on ARM64 It is not working yet, but allow enabling the experiments so we can develop. Change-Id: I957eb05acb4d80b2858ff1f8c16bbfb24e0f6e56 Reviewed-on: https://go-review.googlesource.com/c/go/+/323933 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> * [dev.fuzz] internal/fuzz: notify coordinator for minimization When a worker process finds a crasher, it now sends that result directly to the coordinator without attempting to minimize it first. The coordinator stops sending new inputs and sends the unminimized crasher back to a worker (any worker) for minimization. This prevents wasted work during minimization and will help us implement -keepfuzzing later on. We may also be able to minimize interesting inputs with this approach later. Since panics are recoverable errors (they don't terminate worker processes), we no longer attempt to minimize non-recoverable errors. This didn't work too well before: we lost too much state. Change-Id: Id142c7e91a33f64584170b0d42d22cb1f22a92d7 Reviewed-on: https://go-review.googlesource.com/c/go/+/321835 Trust: Jay Conrod <jayconrod@google.com> Trust: Katie Hockman <katie@golang.org> Reviewed-by: Katie Hockman <katie@golang.org> * [dev.typeparams] internal/bytealg: call memeqbody directly in memequal_varlen on ARM64 Currently, memequal_varlen opens up a frame and call memequal, which then tail-calls memeqbody. This CL changes memequal_varlen tail-calls memeqbody directly. This makes it simpler to switch to the register ABI in the next CL. Change-Id: Ia1367c0abb7f4755fe736c404411793fb9e5c04f Reviewed-on: https://go-review.googlesource.com/c/go/+/324399 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> * [dev.typeparams] runtime, internal/bytealg: port performance-critical functions to register ABI on ARM64 This CL ports a few performance-critical assembly functions to use register arguments directly. This is similar to CL 308931 and CL 310184. Change-Id: I6e30dfff17f76b8578ce8cfd51de21b66610fdb0 Reviewed-on: https://go-review.googlesource.com/c/go/+/324400 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> TryBot-Result: Go Bot <gobot@golang.org> * [dev.typeparams] internal/buildcfg: turn on regabiwrappers by default on ARM64 Change-Id: I8db0a797a745630ec35af3e56406fcb250ea59fe Reviewed-on: https://go-review.googlesource.com/c/go/+/324768 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Than McIntosh <thanm@google.com> * [dev.typeparams] internal/buildcfg: turn on regabireflect by default on ARM64 Change-Id: I4a0a093b07a287cc3a3e0ee939e7ee82d8e9b1aa Reviewed-on: https://go-review.googlesource.com/c/go/+/324889 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Than McIntosh <thanm@google.com> TryBot-Result: Go Bot <gobot@golang.org> * [dev.typeparams] internal/buildcfg: turn on register ABI by default on ARM64 This CL enables all regabi experiments on ARM64 by default. regabiwrappers and regabireflect are enabled in the previous CLs. regabidefer is already enabled everywhere. regabig is no-op on ARM64 as it already has a G register. regabiargs is enabled in this CL. Go1 benchmarks results (GOEXPERIMENT=regabi vs. none, on macOS/ARM64): name old time/op new time/op delta BinaryTree17-8 1.20s ± 1% 1.02s ± 0% -15.08% (p=0.000 n=9+9) Fannkuch11-8 1.55s ± 0% 1.57s ± 0% +1.53% (p=0.000 n=9+8) FmtFprintfEmpty-8 22.5ns ± 3% 14.7ns ± 1% -34.47% (p=0.000 n=10+8) FmtFprintfString-8 38.4ns ± 0% 28.8ns ± 0% -24.99% (p=0.000 n=9+9) FmtFprintfInt-8 38.7ns ± 2% 34.5ns ± 0% -10.79% (p=0.000 n=10+7) FmtFprintfIntInt-8 61.1ns ± 1% 57.9ns ± 0% -5.23% (p=0.000 n=10+8) FmtFprintfPrefixedInt-8 69.9ns ± 0% 64.4ns ± 0% -7.78% (p=0.000 n=8+8) FmtFprintfFloat-8 106ns ± 0% 76ns ± 0% -28.12% (p=0.000 n=7+10) FmtManyArgs-8 273ns ± 0% 236ns ± 1% -13.57% (p=0.000 n=9+10) GobDecode-8 3.09ms ± 1% 2.02ms ± 0% -34.70% (p=0.000 n=9+10) GobEncode-8 2.45ms ± 1% 1.44ms ± 1% -41.26% (p=0.000 n=10+10) Gzip-8 128ms ± 0% 124ms ± 0% -2.89% (p=0.000 n=7+8) Gunzip-8 23.6ms ± 1% 19.8ms ± 0% -16.15% (p=0.000 n=10+9) HTTPClientServer-8 27.4µs ± 1% 26.3µs ± 0% -4.05% (p=0.000 n=10+10) JSONEncode-8 4.47ms ± 1% 3.45ms ± 1% -22.73% (p=0.000 n=10+9) JSONDecode-8 21.5ms ± 0% 17.2ms ± 0% -19.78% (p=0.000 n=9+9) Mandelbrot200-8 2.33ms ± 1% 2.33ms ± 1% ~ (p=0.842 n=9+10) GoParse-8 1.62ms ± 1% 1.32ms ± 1% -18.67% (p=0.000 n=10+10) RegexpMatchEasy0_32-8 33.1ns ± 0% 26.3ns ± 0% -20.50% (p=0.000 n=8+10) RegexpMatchEasy0_1K-8 121ns ± 6% 121ns ± 8% ~ (p=0.926 n=10+10) RegexpMatchEasy1_32-8 31.4ns ± 0% 24.7ns ± 0% -21.50% (p=0.000 n=9+10) RegexpMatchEasy1_1K-8 177ns ± 0% 140ns ± 0% -20.70% (p=0.000 n=10+9) RegexpMatchMedium_32-8 3.02ns ± 3% 2.12ns ± 0% -29.73% (p=0.000 n=10+10) RegexpMatchMedium_1K-8 19.8µs ± 2% 17.1µs ± 0% -13.50% (p=0.000 n=9+9) RegexpMatchHard_32-8 940ns ± 0% 872ns ± 0% -7.20% (p=0.000 n=9+8) RegexpMatchHard_1K-8 28.5µs ± 1% 26.5µs ± 0% -7.06% (p=0.000 n=10+10) Revcomp-8 186ms ± 1% 179ms ± 1% -3.66% (p=0.000 n=10+10) Template-8 30.3ms ± 0% 22.3ms ± 0% -26.58% (p=0.000 n=8+9) TimeParse-8 133ns ± 0% 117ns ± 0% -12.40% (p=0.000 n=10+10) TimeFormat-8 176ns ± 0% 141ns ± 0% -19.92% (p=0.000 n=8+9) [Geo mean] 21.4µs 17.8µs -16.81% name old speed new speed delta GobDecode-8 249MB/s ± 1% 381MB/s ± 0% +53.13% (p=0.000 n=9+10) GobEncode-8 314MB/s ± 1% 534MB/s ± 1% +70.25% (p=0.000 n=10+10) Gzip-8 152MB/s ± 0% 156MB/s ± 0% +2.97% (p=0.000 n=7+8) Gunzip-8 822MB/s ± 1% 981MB/s ± 0% +19.26% (p=0.000 n=10+9) JSONEncode-8 434MB/s ± 1% 562MB/s ± 1% +29.41% (p=0.000 n=10+9) JSONDecode-8 90.3MB/s ± 0% 112.5MB/s ± 0% +24.66% (p=0.000 n=9+9) GoParse-8 35.7MB/s ± 1% 43.9MB/s ± 1% +22.96% (p=0.000 n=10+10) RegexpMatchEasy0_32-8 967MB/s ± 0% 1216MB/s ± 0% +25.78% (p=0.000 n=8+10) RegexpMatchEasy0_1K-8 8.46GB/s ± 6% 8.45GB/s ± 7% ~ (p=0.912 n=10+10) RegexpMatchEasy1_32-8 1.02GB/s ± 0% 1.30GB/s ± 0% +27.40% (p=0.000 n=9+10) RegexpMatchEasy1_1K-8 5.78GB/s ± 0% 7.29GB/s ± 0% +26.10% (p=0.000 n=10+9) RegexpMatchMedium_32-8 331MB/s ± 2% 471MB/s ± 0% +42.29% (p=0.000 n=10+10) RegexpMatchMedium_1K-8 51.7MB/s ± 2% 59.8MB/s ± 0%… * Fix conflicts - Resolve compilation errors caused by undefined type or conflicting type - Remove unsupported keyword used - Replace internal package with local package - Support Go 1.16 with fixed build flags on cpu and testenv - Disable broken tests - Remove unsupported suites * uncomment broken tests - uncomment broken tests - skipped for now, a patch may require extensive work to come Co-authored-by: Tobias Klauser <tklauser@distanz.ch> Co-authored-by: Matt T. Proud <matt.proud@gmail.com> Co-authored-by: Matthew Dempsky <mdempsky@google.com> Co-authored-by: Andy Pan <panjf2000@gmail.com> Co-authored-by: John Bampton <jbampton@gmail.com> Co-authored-by: Josh Bleecher Snyder <josharian@gmail.com> Co-authored-by: Johan Brandhorst <johan.brandhorst@gmail.com> Co-authored-by: Katie Hockman <katie@golang.org> Co-authored-by: Austin Clements <austin@google.com> Co-authored-by: Jay Conrod <jayconrod@google.com> Co-authored-by: KimMachineGun <geon0250@gmail.com> Co-authored-by: Ian Lance Taylor <iant@golang.org> Co-authored-by: Naman Gera <namangera15@gmail.com> Co-authored-by: Manlio Perillo <manlio.perillo@gmail.com> Co-authored-by: Michael Anthony Knyszek <mknyszek@google.com> Co-authored-by: Lynn Boger <laboger@linux.vnet.ibm.com> Co-authored-by: Russ Cox <rsc@golang.org> Co-authored-by: HowJMay <vulxj0j8j8@gmail.com> Co-authored-by: Cherry Zhang <cherryyz@google.com> Co-authored-by: Roland Shoemaker <roland@golang.org> Co-authored-by: Filippo Valsorda <filippo@golang.org> Co-authored-by: Keith Randall <khr@golang.org> Co-authored-by: cuishuang <imcusg@gmail.com> Co-authored-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Co-authored-by: makdon <makdon@makdon.me> Co-authored-by: Carlos Amedee <carlos@golang.org> Co-authored-by: Dmitri Shuralyov <dmitshur@golang.org> Co-authored-by: Matt Layher <mdlayher@gmail.com> Co-authored-by: Martin Möhrmann <martin@golang.org> Co-authored-by: vinckr <vincent@ory.sh> Co-authored-by: Brad Fitzpatrick <bradfitz@golang.org> Co-authored-by: nimelehin <nimelehin@gmail.com> Co-authored-by: Amelia Downs <adowns@vmware.com> Co-authored-by: nicksherron <nsherron90@gmail.com> Co-authored-by: Koichi Shiraishi <zchee.io@gmail.com> Co-authored-by: Archana R <aravind5@in.ibm.com> Co-authored-by: Agniva De Sarker <agnivade@yahoo.co.in> Co-authored-by: Bryan C. Mills <bcmills@google.com> Co-authored-by: David Crawshaw <crawshaw@golang.org> Co-authored-by: Dan Kortschak <dan@kortschak.io> Co-authored-by: Ayan George <ayan@ayan.net> Co-authored-by: Kevin Burke <kevin@burke.dev> Co-authored-by: Michael Matloob <matloob@golang.org> Co-authored-by: Steven Johnstone <steven.james.johnstone@gmail.com> Co-authored-by: Tatiana Bradley <tatiana@golang.org> Co-authored-by: David Taylor <tinystatemachine@gmail.com>
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>>> Flow 1 (client to server)
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00000000 16 03 01 00 eb 01 00 00 e7 03 03 1c d3 8e 3b d9 |..............;.|
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00000010 fe 7d e7 f9 9f fa c6 51 c3 8c 1b dd dc 87 95 f4 |.}.....Q........|
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00000020 39 23 67 e4 d6 bd 94 93 fc 88 4e 20 c3 c0 e2 c1 |9#g.......N ....|
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00000030 3d 12 ec 4c 0a 3f 40 51 13 24 61 11 c0 5d 09 f9 |=..L.?@Q.$a..]..|
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00000040 08 d6 3e cd e7 b3 51 c3 06 8f b4 42 00 04 13 03 |..>...Q....B....|
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00000050 00 ff 01 00 00 9a 00 0b 00 04 03 00 01 02 00 0a |................|
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00000060 00 0c 00 0a 00 1d 00 17 00 1e 00 19 00 18 00 23 |...............#|
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00000070 00 00 00 10 00 19 00 17 06 70 72 6f 74 6f 33 08 |.........proto3.|
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00000080 68 74 74 70 2f 31 2e 31 06 70 72 6f 74 6f 34 00 |http/1.1.proto4.|
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00000090 16 00 00 00 17 00 00 00 0d 00 1e 00 1c 04 03 05 |................|
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000000a0 03 06 03 08 07 08 08 08 09 08 0a 08 0b 08 04 08 |................|
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000000b0 05 08 06 04 01 05 01 06 01 00 2b 00 03 02 03 04 |..........+.....|
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000000c0 00 2d 00 02 01 01 00 33 00 26 00 24 00 1d 00 20 |.-.....3.&.$... |
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000000d0 f4 05 eb 4a 7a 73 20 18 74 aa 14 2a 0c 35 63 29 |...Jzs .t..*.5c)|
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000000e0 cb f2 ad d1 a2 3d bd 9d 02 b4 62 00 bc eb 10 58 |.....=....b....X|
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>>> Flow 2 (server to client)
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00000000 16 03 03 00 7a 02 00 00 76 03 03 00 00 00 00 00 |....z...v.......|
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00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
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00000020 00 00 00 00 00 00 00 00 00 00 00 20 c3 c0 e2 c1 |........... ....|
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00000030 3d 12 ec 4c 0a 3f 40 51 13 24 61 11 c0 5d 09 f9 |=..L.?@Q.$a..]..|
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00000040 08 d6 3e cd e7 b3 51 c3 06 8f b4 42 13 03 00 00 |..>...Q....B....|
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00000050 2e 00 2b 00 02 03 04 00 33 00 24 00 1d 00 20 2f |..+.....3.$... /|
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00000060 e5 7d a3 47 cd 62 43 15 28 da ac 5f bb 29 07 30 |.}.G.bC.(.._.).0|
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00000070 ff f6 84 af c4 cf c2 ed 90 99 5f 58 cb 3b 74 14 |.........._X.;t.|
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00000080 03 03 00 01 01 17 03 03 00 17 fb 75 d8 5c 50 35 |...........u.\P5|
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00000090 55 82 ba 65 1e 63 73 b8 c1 e9 d7 f5 28 68 3c c1 |U..e.cs.....(h<.|
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000000a0 5d 17 03 03 02 6d 56 c9 a9 09 73 6a bc fd 1a 3c |]....mV...sj...<|
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000000b0 6a f8 3e 32 99 83 e8 f6 01 9e 5e 30 e8 53 7f 72 |j.>2......^0.S.r|
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000000c0 fd 86 72 a8 9e 47 25 67 c1 f1 9a 03 c0 9d 6f 9d |..r..G%g......o.|
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000000d0 bd ed 29 30 8f 3c 01 ce 49 bb 5f dd 58 9a ae 80 |..)0.<..I._.X...|
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000000e0 5c 2d 81 fc ea 7b 03 03 3d 5d bb 92 23 73 67 89 |\-...{..=]..#sg.|
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000000f0 2e f0 ec 08 20 8a 36 eb 43 a6 a1 68 d0 39 95 37 |.... .6.C..h.9.7|
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00000100 6b 15 a9 0e 46 20 92 51 9c 04 bf 3b 07 97 84 cb |k...F .Q...;....|
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00000110 1f 30 38 37 2e ff e7 0f f5 14 93 5a 84 f1 f7 10 |.087.......Z....|
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00000120 c2 a5 0d bb 97 96 ef 4a e0 13 c0 63 72 2b 60 f3 |.......J...cr+`.|
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00000130 59 b5 57 aa 5f d1 da a9 0e dd 9c dd c2 cb 61 fe |Y.W._.........a.|
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00000140 e2 69 8e db 5d 70 6c 3a 33 e0 9e db 9a 31 26 6a |.i..]pl:3....1&j|
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00000150 2b 9e 19 8e bb 5d 06 48 ea c0 a1 c6 11 24 fb c4 |+....].H.....$..|
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00000160 ce ae 48 54 64 81 d1 84 38 a6 e0 7a 7b 74 2b bc |..HTd...8..z{t+.|
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00000170 ce 07 8b b6 04 1f 5b 4c 36 29 68 0c 8c c7 32 15 |......[L6)h...2.|
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00000180 93 e0 10 52 c2 27 23 96 c5 0c 9c e9 e2 a9 08 7d |...R.'#........}|
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00000190 25 68 65 f5 4e 44 eb a9 85 78 13 e1 0d 86 5e dc |%he.ND...x....^.|
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000001a0 fd e5 c6 dd 65 46 8e 2f 32 82 83 0b dd 67 f8 42 |....eF./2....g.B|
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000001b0 65 87 3b 08 fe b1 f5 12 e9 74 21 04 12 6d 75 35 |e.;......t!..mu5|
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000001c0 b2 eb 93 95 72 10 fa 56 96 77 c3 0c 17 8c 9e f6 |....r..V.w......|
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000001d0 77 19 28 37 96 3e 73 98 f4 d2 91 4f 40 db 76 56 |w.(7.>s....O@.vV|
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000001e0 ce b5 a8 7a b8 86 d0 9a ba b5 8b 40 c2 63 e1 cf |...z.......@.c..|
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000001f0 49 29 2c 5d 1a 9b 8b 56 cb 93 ca 2c c0 d0 15 b7 |I),]...V...,....|
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00000200 8a f1 6a d5 0a a8 81 57 b1 6e 10 cd a5 ff b1 4d |..j....W.n.....M|
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00000210 47 c6 9b 35 f1 5f 83 91 22 f6 88 68 65 b3 b9 c9 |G..5._.."..he...|
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00000220 02 dc 4b f7 13 39 06 e6 3a ec 94 ef 51 15 05 72 |..K..9..:...Q..r|
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00000230 1d f4 9d 3b da ca 8d 2c 64 be 9b 45 99 2c 63 cc |...;...,d..E.,c.|
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00000240 22 b3 8b 93 ad f6 2c f0 d2 d9 11 3f 5b c0 40 fa |".....,....?[.@.|
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00000250 90 6e a0 76 b2 43 b9 4c 72 c4 24 28 a2 bf 56 d6 |.n.v.C.Lr.$(..V.|
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00000260 d2 a7 2a d1 8c 5e 1d eb f8 be d0 43 da 7a c7 88 |..*..^.....C.z..|
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00000270 61 67 a2 69 85 23 43 3e d4 88 f2 33 c3 5b 38 0a |ag.i.#C>...3.[8.|
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00000280 1e de 28 3b 3b 19 de 95 2f 84 c0 37 88 80 59 2f |..(;;.../..7..Y/|
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00000290 a6 ee 93 1a 69 08 c3 df 7c cf da c3 9b 96 70 d9 |....i...|.....p.|
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000002a0 60 c5 e9 0f 42 f6 1a f2 58 5e f2 32 61 6a b2 a3 |`...B...X^.2aj..|
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000002b0 1f 97 fa 08 6c 3f 4b 83 1f 04 66 80 8a 26 3a 7f |....l?K...f..&:.|
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000002c0 24 30 ec 10 ae 7d 19 ff 39 91 ca 97 4e ed 0a d7 |$0...}..9...N...|
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000002d0 64 3b 6b 50 29 33 0d b2 10 bc 83 63 3c fb 9a 82 |d;kP)3.....c<...|
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000002e0 3b 7f bc 04 40 f1 33 64 4a 80 cd 01 f9 f4 c6 89 |;...@.3dJ.......|
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000002f0 65 27 25 f9 cf 4f 7e c8 6e d9 0e ec 47 4a 51 29 |e'%..O~.n...GJQ)|
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00000300 2f be 34 50 bd 9b d2 d8 b7 ea bb 0b a1 e0 20 1b |/.4P.......... .|
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00000310 02 9c f2 17 03 03 00 99 61 dc 0b 3a 30 de 39 f6 |........a..:0.9.|
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00000320 f3 db f8 6c 3b fa 4e 1e 7e 62 a5 ae 73 ba e1 41 |...l;.N.~b..s..A|
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00000330 58 77 2a c1 7a 0c 50 bb 0c 57 b4 c4 25 bf 2f 9f |Xw*.z.P..W..%./.|
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00000340 38 91 e2 65 22 9d ca ac 18 58 7e 81 2d fd 74 24 |8..e"....X~.-.t$|
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00000350 28 69 76 11 df 9d 23 b8 be ae 8b e0 93 8e 5d df |(iv...#.......].|
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00000360 0a 64 d0 b7 02 68 aa 86 01 0d 55 11 3b 76 70 c6 |.d...h....U.;vp.|
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00000370 83 0c 5e 0a e3 37 a5 8b ad 25 50 b9 e8 5c 6b 04 |..^..7...%P..\k.|
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00000380 b4 51 ec 9c d3 fa c6 b7 9c f0 46 aa 73 da 3c 0d |.Q........F.s.<.|
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00000390 d3 bd 32 81 d4 d2 f1 1a b0 92 f3 73 3e 54 2b 05 |..2........s>T+.|
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000003a0 92 24 34 75 df d6 18 a0 6a 82 95 4c 9b fc 7e b6 |.$4u....j..L..~.|
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000003b0 8e 17 03 03 00 35 8f 34 0e 3b 91 d8 e7 74 24 71 |.....5.4.;...t$q|
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000003c0 0e 7b f3 12 bb 76 2f 31 12 17 b8 9e 24 ce f9 2f |.{...v/1....$../|
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000003d0 3f 5d f2 13 4b 2e 9b 1e c4 78 03 a6 c8 07 11 a3 |?]..K....x......|
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000003e0 98 79 61 6e 4f 44 6e 18 ee c4 9b 17 03 03 00 93 |.yanODn.........|
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000003f0 64 dd 52 a9 d9 51 63 6a a0 a3 c2 75 6b 5d 1d 54 |d.R..Qcj...uk].T|
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00000400 ce d4 53 7e 14 8e d9 26 93 28 78 65 16 1b 95 77 |..S~...&.(xe...w|
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00000410 68 0a 46 f1 82 36 bb 8a fa 0d df 54 8c 3d 83 e0 |h.F..6.....T.=..|
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00000420 d7 de 2d 96 e9 c4 d7 22 d3 97 8e ae 90 f8 fc e6 |..-...."........|
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00000430 a6 4b 78 98 4c c5 28 87 91 46 fa f4 1c 8d 0e ec |.Kx.L.(..F......|
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00000440 0d 71 40 9a 04 49 b4 e8 5b 62 6f cd 16 c1 d5 fb |.q@..I..[bo.....|
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00000450 73 2a 96 8f e5 a2 f4 11 1e df 2d 40 45 6b d5 a9 |s*........-@Ek..|
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00000460 e4 e3 f7 93 fc fa d7 20 af d5 f7 b4 0e 09 ad d5 |....... ........|
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00000470 26 87 b8 6c e2 20 95 fb c0 70 3e 38 be b7 b1 9f |&..l. ...p>8....|
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00000480 70 da c1 |p..|
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>>> Flow 3 (client to server)
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00000000 14 03 03 00 01 01 17 03 03 00 35 29 d2 b9 bb 9b |..........5)....|
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00000010 de 6c 5d 22 23 c1 fe 99 4c c5 33 bf fd 70 36 6b |.l]"#...L.3..p6k|
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00000020 f1 a5 92 e8 bf 7c 3d 6e ef 6a 44 73 bc cb 27 1c |.....|=n.jDs..'.|
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00000030 09 5d bf 99 4c 19 24 c3 3b 30 91 b5 e3 b6 63 45 |.]..L.$.;0....cE|
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>>> Flow 4 (server to client)
|
|
00000000 17 03 03 00 1e 52 55 85 7c b8 87 dd c7 b2 d9 5b |.....RU.|......[|
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00000010 18 1d bb ac bf b6 ab 76 82 be 64 0e b2 7b 2c 0f |.......v..d..{,.|
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00000020 aa 17 92 17 03 03 00 13 79 0a 60 b1 46 20 33 74 |........y.`.F 3t|
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00000030 ed 12 a0 23 de 68 88 fc 6f dd 8e |...#.h..o..|
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