quic

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 Go to latest Published: Aug 12, 2023 License: MIT Imports: 25 Imported by: 1

README

A QUIC implementation in pure Go

Please read https://multipath-quic.org/2017/12/09/artifacts-available.html to figure out how to setup the code.

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quic-go is an implementation of the QUIC protocol in Go.

Roadmap

quic-go is compatible with the current version(s) of Google Chrome and QUIC as deployed on Google's servers. We're actively tracking the development of the Chrome code to ensure compatibility as the protocol evolves. In that process, we're dropping support for old QUIC versions. As Google's QUIC versions are expected to converge towards the IETF QUIC draft, quic-go will eventually implement that draft.

Guides

We currently support Go 1.9+.

Installing and updating dependencies:

go get -t -u ./...

Running tests:

go test ./...
Running the example server
go run example/main.go -www /var/www/

Using the quic_client from chromium:

quic_client --host=127.0.0.1 --port=6121 --v=1 https://quic.clemente.io

Using Chrome:

/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --user-data-dir=/tmp/chrome --no-proxy-server --enable-quic --origin-to-force-quic-on=quic.clemente.io:443 --host-resolver-rules='MAP quic.clemente.io:443 127.0.0.1:6121' https://quic.clemente.io
QUIC without HTTP/2

Take a look at this echo example.

Using the example client
go run example/client/main.go https://clemente.io

Usage

As a server

See the example server or try out Caddy (from version 0.9, instructions here). Starting a QUIC server is very similar to the standard lib http in go:

http.Handle("/", http.FileServer(http.Dir(wwwDir)))
h2quic.ListenAndServeQUIC("localhost:4242", "/path/to/cert/chain.pem", "/path/to/privkey.pem", nil)
As a client

See the example client. Use a h2quic.RoundTripper as a Transport in a http.Client.

http.Client{
  Transport: &h2quic.RoundTripper{},
}

Contributing

We are always happy to welcome new contributors! We have a number of self-contained issues that are suitable for first-time contributors, they are tagged with want-help. If you have any questions, please feel free to reach out by opening an issue or leaving a comment.

multipath-quic-go

Documentation

Index

Constants

View Source 
const (
	SBD_N                uint64 = 50
	SBD_M                uint64 = 50
	SBD_MAX_OBSERVATIONS int    = 10
)
View Source 
const (
	CONGESTION_THRESHOLD     float64 = 0.1  // c_s
	KEYFREQ_DELTA_THRESHOLD  float64 = 0.1  // p_f
	LOSS_DELTA_THRESHOLD     float64 = 0.1  // p_d (difference in subflows' loss to be in same group)
	SKEWNESS_DELTA_THRESHOLD float64 = 0.15 // p_s
	VARIANCE_DELTA_THRESHOLD float64 = 0.1  // p_mad
	F                        float64 = 20
	HYSTERESIS_THRESHOLD     float64 = 0.3 // c_h
	LOSS_THRESHOLD           float64 = 0.1 // p_l
)
View Source 
const (
	SBD_T_INTERVAL time.Duration = 350
)

Variables

This section is empty.

Functions

This section is empty.

Types

type Config 

type Config struct {
	// The QUIC versions that can be negotiated.
	// If not set, it uses all versions available.
	// Warning: This API should not be considered stable and will change soon.
	Versions []VersionNumber
	// Ask the server to truncate the connection ID sent in the Public Header.
	// This saves 8 bytes in the Public Header in every packet. However, if the IP address of the server changes, the connection cannot be migrated.
	// Currently only valid for the client.
	RequestConnectionIDTruncation bool
	// HandshakeTimeout is the maximum duration that the cryptographic handshake may take.
	// If the timeout is exceeded, the connection is closed.
	// If this value is zero, the timeout is set to 10 seconds.
	HandshakeTimeout time.Duration
	// IdleTimeout is the maximum duration that may pass without any incoming network activity.
	// This value only applies after the handshake has completed.
	// If the timeout is exceeded, the connection is closed.
	// If this value is zero, the timeout is set to 30 seconds.
	IdleTimeout time.Duration
	// AcceptCookie determines if a Cookie is accepted.
	// It is called with cookie = nil if the client didn't send an Cookie.
	// If not set, it verifies that the address matches, and that the Cookie was issued within the last 24 hours.
	// This option is only valid for the server.
	AcceptCookie func(clientAddr net.Addr, cookie *Cookie) bool
	// MaxReceiveStreamFlowControlWindow is the maximum stream-level flow control window for receiving data.
	// If this value is zero, it will default to 1 MB for the server and 6 MB for the client.
	MaxReceiveStreamFlowControlWindow uint64
	// MaxReceiveConnectionFlowControlWindow is the connection-level flow control window for receiving data.
	// If this value is zero, it will default to 1.5 MB for the server and 15 MB for the client.
	MaxReceiveConnectionFlowControlWindow uint64
	// KeepAlive defines whether this peer will periodically send PING frames to keep the connection alive.
	KeepAlive bool
	// Should we cache handshake parameters? If no cache available, should we create one?
	CacheHandshake bool
	// Should the host try to create new paths, if possible?
	CreatePaths bool
}

Config contains all configuration data needed for a QUIC server or client.

type ConnectionState 

type ConnectionState struct {
	TLS               tls.ConnectionState
	SupportsDatagrams bool
}
type Cookie = handshake.Cookie

A Cookie can be used to verify the ownership of the client address.

type FlowGroups 

type FlowGroups struct {
	// contains filtered or unexported fields
}

func (*FlowGroups) FlowGroups 

func (fg *FlowGroups) FlowGroups(s *session) [][]FlowGroups

type Listener 

type Listener interface {
	// Close the server, sending CONNECTION_CLOSE frames to each peer.
	Close() error
	// Addr returns the local network addr that the server is listening on.
	Addr() net.Addr
	// Accept returns new sessions. It should be called in a loop.
	Accept() (Session, error)
}

A Listener for incoming QUIC connections

func Listen 

func Listen(pconn net.PacketConn, tlsConf *tls.Config, config *Config) (Listener, error)

Listen listens for QUIC connections on a given net.PacketConn. The listener is not active until Serve() is called. The tls.Config must not be nil, the quic.Config may be nil.

func ListenAddr 

func ListenAddr(addr string, tlsConf *tls.Config, config *Config) (Listener, error)

ListenAddr creates a QUIC server listening on a given address. The listener is not active until Serve() is called. The tls.Config must not be nil, the quic.Config may be nil.

func ListenAddrImpl 

func ListenAddrImpl(addr string, tlsConf *tls.Config, config *Config, pconnMgrArg *pconnManager) (Listener, error)

ListenAddrImpl creates a QUIC server listening on a given address. The listener is not active until Serve() is called. The tls.Config must not be nil, the quic.Config may be nil. The pconnManager may be nil

func ListenImpl 

func ListenImpl(pconn net.PacketConn, tlsConf *tls.Config, config *Config, pconnMgrArg *pconnManager) (Listener, error)

ListenImpl listens for QUIC connections on a given net.PacketConn. The listener is not active until Serve() is called. The tls.Config must not be nil, the quic.Config may be nil. pconnManager may be nil

type Loss 

type Loss struct {
	// contains filtered or unexported fields
}

SBD

type NonFWSession 

type NonFWSession interface {
	Session
	WaitUntilHandshakeComplete() error
}

A NonFWSession is a QUIC connection between two peers half-way through the handshake. The communication is encrypted, but not yet forward secure.

func DialAddrNonFWSecure 

func DialAddrNonFWSecure(
	addr string,
	tlsConf *tls.Config,
	config *Config,
) (NonFWSession, error)

DialAddrNonFWSecure establishes a new QUIC connection to a server. The hostname for SNI is taken from the given address.

func DialNonFWSecure 

func DialNonFWSecure(
	pconn net.PacketConn,
	remoteAddr net.Addr,
	host string,
	tlsConf *tls.Config,
	config *Config,
	pconnMgrArg *pconnManager,
) (NonFWSession, error)

DialNonFWSecure establishes a new non-forward-secure QUIC connection to a server using a net.PacketConn. The host parameter is used for SNI.

type Sbd 

type Sbd struct {
	// contains filtered or unexported fields
}

type Session 

type Session interface {
	// AcceptStream returns the next stream opened by the peer, blocking until one is available.
	// Since stream 1 is reserved for the crypto stream, the first stream is either 2 (for a client) or 3 (for a server).
	AcceptStream() (Stream, error)
	// OpenStream opens a new QUIC stream, returning a special error when the peer's concurrent stream limit is reached.
	// New streams always have the smallest possible stream ID.
	// TODO: Enable testing for the special error
	OpenStream() (Stream, error)
	// OpenStreamSync opens a new QUIC stream, blocking until the peer's concurrent stream limit allows a new stream to be opened.
	// It always picks the smallest possible stream ID.
	OpenStreamSync() (Stream, error)
	// LocalAddr returns the local address.
	LocalAddr() net.Addr
	// RemoteAddr returns the address of the peer.
	RemoteAddr() net.Addr
	// Close closes the connection. The error will be sent to the remote peer in a CONNECTION_CLOSE frame. An error value of nil is allowed and will cause a normal PeerGoingAway to be sent.
	Close(error) error
	// The context is cancelled when the session is closed.
	// Warning: This API should not be considered stable and might change soon.
	Context() context.Context
}

A Session is a QUIC connection between two peers.

func Dial 

func Dial(
	pconn net.PacketConn,
	remoteAddr net.Addr,
	host string,
	tlsConf *tls.Config,
	config *Config,
	pconnMgrArg *pconnManager,
) (Session, error)

Dial establishes a new QUIC connection to a server using a net.PacketConn. The host parameter is used for SNI.

func DialAddr 

func DialAddr(addr string, tlsConf *tls.Config, config *Config) (Session, error)

DialAddr establishes a new QUIC connection to a server. The hostname for SNI is taken from the given address.

type Stream 

type Stream interface {
	// Read reads data from the stream.
	// Read can be made to time out and return a net.Error with Timeout() == true
	// after a fixed time limit; see SetDeadline and SetReadDeadline.
	io.Reader
	// Write writes data to the stream.
	// Write can be made to time out and return a net.Error with Timeout() == true
	// after a fixed time limit; see SetDeadline and SetWriteDeadline.
	io.Writer
	io.Closer
	StreamID() StreamID
	// Reset closes the stream with an error.
	Reset(error)
	// The context is canceled as soon as the write-side of the stream is closed.
	// This happens when Close() is called, or when the stream is reset (either locally or remotely).
	// Warning: This API should not be considered stable and might change soon.
	Context() context.Context
	// SetReadDeadline sets the deadline for future Read calls and
	// any currently-blocked Read call.
	// A zero value for t means Read will not time out.
	SetReadDeadline(t time.Time) error
	// SetWriteDeadline sets the deadline for future Write calls
	// and any currently-blocked Write call.
	// Even if write times out, it may return n > 0, indicating that
	// some of the data was successfully written.
	// A zero value for t means Write will not time out.
	SetWriteDeadline(t time.Time) error
	// SetDeadline sets the read and write deadlines associated
	// with the connection. It is equivalent to calling both
	// SetReadDeadline and SetWriteDeadline.
	SetDeadline(t time.Time) error
	// GetBytesSent returns the number of bytes of the stream that were sent to the peer
	GetBytesSent() (protocol.ByteCount, error)
	// GetBytesRetrans returns the number of bytes of the stream that were retransmitted to the peer
	GetBytesRetrans() (protocol.ByteCount, error)
}

Stream is the interface implemented by QUIC streams

type StreamID 

type StreamID = protocol.StreamID

The StreamID is the ID of a QUIC stream.

type TimeStamp 

type TimeStamp struct {
	// contains filtered or unexported fields
}

func (*TimeStamp) DecodeADE 

func (ts *TimeStamp) DecodeADE(ets uint64) uint64

func (*TimeStamp) EncodeADE 

func (ts *TimeStamp) EncodeADE(timestamp uint64) uint64

func (*TimeStamp) Setup 

func (ts *TimeStamp) Setup()

func (*TimeStamp) TimeStamp 

func (ts *TimeStamp) TimeStamp() uint64

type VersionNumber 

type VersionNumber = protocol.VersionNumber

A VersionNumber is a QUIC version number.

Source Files

View all Source files

Directories

Path Synopsis
client
client_benchmarker
client_benchmarker_cached
echo
reqres
reqres/client
sample
sample/config
sample/utils
integrationtests
tools/proxy
tools/testlog
tools/testserver
internal
crypto
flowcontrol
handshake
mocks
mocks/mocks_fc
protocol
utils
wire

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