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crypto/tls: support QUIC as a transport

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Add a QUICConn type for use by QUIC implementations.

A QUICConn provides unencrypted handshake bytes and connection
secrets to the QUIC layer, and receives handshake bytes.

For #44886

Change-Id: I859dda4cc6d466a1df2fb863a69d3a2a069110d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/493655
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Marten Seemann <martenseemann@gmail.com>
This commit is contained in:
Damien Neil 2022-10-14 10:48:42 -07:00
parent 32e60edd6d
commit b7691e8126
11 changed files with 1077 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

30
handshake_messages.go
View file

@ -93,6 +93,7 @@ type clientHelloMsg struct {
pskModes []uint8
pskIdentities []pskIdentity
pskBinders [][]byte
quicTransportParameters []byte
}
func (m *clientHelloMsg) marshal() ([]byte, error) {
@ -246,6 +247,13 @@ func (m *clientHelloMsg) marshal() ([]byte, error) {
})
})
}
if m.quicTransportParameters != nil { // marshal zero-length parameters when present
// RFC 9001, Section 8.2
exts.AddUint16(extensionQUICTransportParameters)
exts.AddUint16LengthPrefixed(func(exts *cryptobyte.Builder) {
exts.AddBytes(m.quicTransportParameters)
})
}
if len(m.pskIdentities) > 0 { // pre_shared_key must be the last extension
// RFC 8446, Section 4.2.11
exts.AddUint16(extensionPreSharedKey)
@ -560,6 +568,11 @@ func (m *clientHelloMsg) unmarshal(data []byte) bool {
if !readUint8LengthPrefixed(&extData, &m.pskModes) {
return false
}
case extensionQUICTransportParameters:
m.quicTransportParameters = make([]byte, len(extData))
if !extData.CopyBytes(m.quicTransportParameters) {
return false
}
case extensionPreSharedKey:
// RFC 8446, Section 4.2.11
if !extensions.Empty() {
@ -860,8 +873,9 @@ func (m *serverHelloMsg) unmarshal(data []byte) bool {
}
type encryptedExtensionsMsg struct {
raw []byte
alpnProtocol string
raw []byte
alpnProtocol string
quicTransportParameters []byte
}
func (m *encryptedExtensionsMsg) marshal() ([]byte, error) {
@ -883,6 +897,13 @@ func (m *encryptedExtensionsMsg) marshal() ([]byte, error) {
})
})
}
if m.quicTransportParameters != nil { // marshal zero-length parameters when present
// draft-ietf-quic-tls-32, Section 8.2
b.AddUint16(extensionQUICTransportParameters)
b.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
b.AddBytes(m.quicTransportParameters)
})
}
})
})
@ -921,6 +942,11 @@ func (m *encryptedExtensionsMsg) unmarshal(data []byte) bool {
return false
}
m.alpnProtocol = string(proto)
case extensionQUICTransportParameters:
m.quicTransportParameters = make([]byte, len(extData))
if !extData.CopyBytes(m.quicTransportParameters) {
return false
}
default:
// Ignore unknown extensions.
continue