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reduce the maximum packet size of sent packets to 1200 bytes

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This is the value the IETF draft mandates for implementations that don't
do PMTUD.
This commit is contained in:
Marten Seemann 2017-10-18 13:55:57 +07:00
parent 2f1db1c23d
commit 5504c47ca5
2 changed files with 5 additions and 5 deletions
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4
integrationtests/tools/proxy/proxy.go
View file

@ -164,7 +164,7 @@ func (p *QuicProxy) newConnection(cliAddr *net.UDPAddr) (*connection, error) {
// runProxy listens on the proxy address and handles incoming packets.
func (p *QuicProxy) runProxy() error {
for {
buffer := make([]byte, protocol.MaxPacketSize)
buffer := make([]byte, protocol.MaxReceivePacketSize)
n, cliaddr, err := p.conn.ReadFromUDP(buffer)
if err != nil {
return err
@ -211,7 +211,7 @@ func (p *QuicProxy) runProxy() error {
// runConnection handles packets from server to a single client
func (p *QuicProxy) runConnection(conn *connection) error {
for {
buffer := make([]byte, protocol.MaxPacketSize)
buffer := make([]byte, protocol.MaxReceivePacketSize)
n, err := conn.ServerConn.Read(buffer)
if err != nil {
return err

6
internal/protocol/server_parameters.go
View file

@ -2,9 +2,9 @@ package protocol
import "time"
// MaxPacketSize is the maximum packet size, including the public header, that we use for sending packets
// This is the value used by Chromium for a QUIC packet sent using IPv6 (for IPv4 it would be 1370)
const MaxPacketSize ByteCount = 1350
// MaxPacketSize is the maximum packet size that we use for sending packets.
// It includes the QUIC packet header, but excludes the UDP and IP header.
const MaxPacketSize ByteCount = 1200
// NonForwardSecurePacketSizeReduction is the number of bytes a non forward-secure packet has to be smaller than a forward-secure packet
// This makes sure that those packets can always be retransmitted without splitting the contained StreamFrames