Documentation ¶
Index ¶
- Constants
- Variables
- type ApplicationError
- type ApplicationErrorCode
- type ClientToken
- type Config
- type ConnectionState
- type EarlyListener
- type EarlySession
- func DialAddrEarly(addr string, tlsConf *tls.Config, config *Config) (EarlySession, error)
- func DialAddrEarlyContext(ctx context.Context, addr string, tlsConf *tls.Config, config *Config) (EarlySession, error)
- func DialEarly(pconn net.PacketConn, remoteAddr net.Addr, host string, tlsConf *tls.Config, ...) (EarlySession, error)
- func DialEarlyContext(ctx context.Context, pconn net.PacketConn, remoteAddr net.Addr, host string, ...) (EarlySession, error)
- type HandshakeTimeoutError
- type IdleTimeoutError
- type Listener
- type OOBCapablePacketConn
- type ReceiveStream
- type SendStream
- type Session
- func Dial(pconn net.PacketConn, remoteAddr net.Addr, host string, tlsConf *tls.Config, ...) (Session, error)
- func DialAddr(addr string, tlsConf *tls.Config, config *Config) (Session, error)
- func DialAddrContext(ctx context.Context, addr string, tlsConf *tls.Config, config *Config) (Session, error)
- func DialContext(ctx context.Context, pconn net.PacketConn, remoteAddr net.Addr, host string, ...) (Session, error)
- type StatelessResetError
- type Stream
- type StreamError
- type StreamErrorCode
- type StreamID
- type Token
- type TokenStore
- type TransportError
- type TransportErrorCode
- type VersionNegotiationError
- type VersionNumber
Constants ¶
const ( NoError = qerr.NoError InternalError = qerr.InternalError ConnectionRefused = qerr.ConnectionRefused FlowControlError = qerr.FlowControlError StreamLimitError = qerr.StreamLimitError StreamStateError = qerr.StreamStateError FinalSizeError = qerr.FinalSizeError FrameEncodingError = qerr.FrameEncodingError TransportParameterError = qerr.TransportParameterError ConnectionIDLimitError = qerr.ConnectionIDLimitError ProtocolViolation = qerr.ProtocolViolation InvalidToken = qerr.InvalidToken ApplicationErrorErrorCode = qerr.ApplicationErrorErrorCode CryptoBufferExceeded = qerr.CryptoBufferExceeded KeyUpdateError = qerr.KeyUpdateError AEADLimitReached = qerr.AEADLimitReached NoViablePathError = qerr.NoViablePathError )
const ( // VersionDraft29 is IETF QUIC draft-29 VersionDraft29 = protocol.VersionDraft29 // VersionDraft32 is IETF QUIC draft-32 VersionDraft32 = protocol.VersionDraft32 // VersionDraft34 is IETF QUIC draft-34 VersionDraft34 = protocol.VersionDraft34 // Version1 is RFC 9000 Version1 = protocol.Version1 )
const IP_DONTFRAGMENT = 14
Variables ¶
var Err0RTTRejected = errors.New("0-RTT rejected")
Err0RTTRejected is the returned from: * Open{Uni}Stream{Sync} * Accept{Uni}Stream * Stream.Read and Stream.Write when the server rejects a 0-RTT connection attempt.
var RetireBugBackwardsCompatibilityMode bool
RetireBugBackwardsCompatibilityMode controls a backwards compatibility mode, necessary due to a bug in quic-go v0.17.2 (and earlier), where under certain circumstances, an endpoint would retire the connection ID it is currently using. See https://github.com/lucas-clemente/quic-go/issues/2658. The bug has now been fixed, and new deployments have nothing to worry about. Deployments that already have quic-go <= v0.17.2 deployed should active RetireBugBackwardsCompatibilityMode. If activated, quic-go will take steps to avoid the bug from triggering when connected to endpoints that are still running quic-go <= v0.17.2. This flag will be removed in a future version of quic-go.
var SessionTracingKey = sessionTracingCtxKey{}
SessionTracingKey can be used to associate a ConnectionTracer with a Session. It is set on the Session.Context() context, as well as on the context passed to logging.Tracer.NewConnectionTracer.
Functions ¶
This section is empty.
Types ¶
type ApplicationError ¶ added in v0.21.0
type ApplicationError = qerr.ApplicationError
type ApplicationErrorCode ¶ added in v0.21.0
type ApplicationErrorCode = qerr.ApplicationErrorCode
type ClientToken ¶ added in v0.13.0
type ClientToken struct {
// contains filtered or unexported fields
}
A ClientToken is a token received by the client. It can be used to skip address validation on future connection attempts.
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 // The length of the connection ID in bytes. // It can be 0, or any value between 4 and 18. // If not set, the interpretation depends on where the Config is used: // If used for dialing an address, a 0 byte connection ID will be used. // If used for a server, or dialing on a packet conn, a 4 byte connection ID will be used. // When dialing on a packet conn, the ConnectionIDLength value must be the same for every Dial call. ConnectionIDLength int // HandshakeIdleTimeout is the idle timeout before completion of the handshake. // Specifically, if we don't receive any packet from the peer within this time, the connection attempt is aborted. // If this value is zero, the timeout is set to 5 seconds. HandshakeIdleTimeout time.Duration // MaxIdleTimeout is the maximum duration that may pass without any incoming network activity. // The actual value for the idle timeout is the minimum of this value and the peer's. // 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. MaxIdleTimeout time.Duration // AcceptToken determines if a Token is accepted. // It is called with token = nil if the client didn't send a token. // If not set, a default verification function is used: // * it verifies that the address matches, and // * if the token is a retry token, that it was issued within the last 5 seconds // * else, that it was issued within the last 24 hours. // This option is only valid for the server. AcceptToken func(clientAddr net.Addr, token *Token) bool // The TokenStore stores tokens received from the server. // Tokens are used to skip address validation on future connection attempts. // The key used to store tokens is the ServerName from the tls.Config, if set // otherwise the token is associated with the server's IP address. TokenStore TokenStore // InitialStreamReceiveWindow is the initial size of the stream-level flow control window for receiving data. // If the application is consuming data quickly enough, the flow control auto-tuning algorithm // will increase the window up to MaxStreamReceiveWindow. // If this value is zero, it will default to 512 KB. InitialStreamReceiveWindow uint64 // MaxStreamReceiveWindow is the maximum stream-level flow control window for receiving data. // If this value is zero, it will default to 6 MB. MaxStreamReceiveWindow uint64 // InitialConnectionReceiveWindow is the initial size of the stream-level flow control window for receiving data. // If the application is consuming data quickly enough, the flow control auto-tuning algorithm // will increase the window up to MaxConnectionReceiveWindow. // If this value is zero, it will default to 512 KB. InitialConnectionReceiveWindow uint64 // MaxConnectionReceiveWindow is the connection-level flow control window for receiving data. // If this value is zero, it will default to 15 MB. MaxConnectionReceiveWindow uint64 // MaxIncomingStreams is the maximum number of concurrent bidirectional streams that a peer is allowed to open. // Values above 2^60 are invalid. // If not set, it will default to 100. // If set to a negative value, it doesn't allow any bidirectional streams. MaxIncomingStreams int64 // MaxIncomingUniStreams is the maximum number of concurrent unidirectional streams that a peer is allowed to open. // Values above 2^60 are invalid. // If not set, it will default to 100. // If set to a negative value, it doesn't allow any unidirectional streams. MaxIncomingUniStreams int64 // The StatelessResetKey is used to generate stateless reset tokens. // If no key is configured, sending of stateless resets is disabled. StatelessResetKey []byte // KeepAlive defines whether this peer will periodically send a packet to keep the connection alive. KeepAlive bool // DisablePathMTUDiscovery disables Path MTU Discovery (RFC 8899). // Packets will then be at most 1252 (IPv4) / 1232 (IPv6) bytes in size. DisablePathMTUDiscovery bool // See https://datatracker.ietf.org/doc/draft-ietf-quic-datagram/. // Datagrams will only be available when both peers enable datagram support. EnableDatagrams bool Tracer logging.Tracer }
Config contains all configuration data needed for a QUIC server or client.
type ConnectionState ¶ added in v0.7.0
type ConnectionState struct { TLS handshake.ConnectionState SupportsDatagrams bool }
ConnectionState records basic details about a QUIC connection
type EarlyListener ¶ added in v0.13.0
type EarlyListener interface { // Close the server. All active sessions will be closed. Close() error // Addr returns the local network addr that the server is listening on. Addr() net.Addr // Accept returns new early sessions. It should be called in a loop. Accept(context.Context) (EarlySession, error) }
An EarlyListener listens for incoming QUIC connections, and returns them before the handshake completes.
func ListenAddrEarly ¶ added in v0.13.0
ListenAddrEarly works like ListenAddr, but it returns sessions before the handshake completes.
func ListenEarly ¶ added in v0.13.0
func ListenEarly(conn net.PacketConn, tlsConf *tls.Config, config *Config) (EarlyListener, error)
ListenEarly works like Listen, but it returns sessions before the handshake completes.
type EarlySession ¶ added in v0.13.0
type EarlySession interface { Session // Blocks until the handshake completes (or fails). // Data sent before completion of the handshake is encrypted with 1-RTT keys. // Note that the client's identity hasn't been verified yet. HandshakeComplete() context.Context NextSession() Session }
An EarlySession is a session that is handshaking. Data sent during the handshake is encrypted using the forward secure keys. When using client certificates, the client's identity is only verified after completion of the handshake.
func DialAddrEarly ¶ added in v0.15.0
DialAddrEarly establishes a new 0-RTT QUIC connection to a server. It uses a new UDP connection and closes this connection when the QUIC session is closed. The hostname for SNI is taken from the given address. The tls.Config.CipherSuites allows setting of TLS 1.3 cipher suites.
func DialAddrEarlyContext ¶ added in v0.19.0
func DialAddrEarlyContext( ctx context.Context, addr string, tlsConf *tls.Config, config *Config, ) (EarlySession, error)
DialAddrEarlyContext establishes a new 0-RTT QUIC connection to a server using provided context. See DialAddrEarly for details
func DialEarly ¶ added in v0.15.0
func DialEarly( pconn net.PacketConn, remoteAddr net.Addr, host string, tlsConf *tls.Config, config *Config, ) (EarlySession, error)
DialEarly establishes a new 0-RTT QUIC connection to a server using a net.PacketConn. The same PacketConn can be used for multiple calls to Dial and Listen, QUIC connection IDs are used for demultiplexing the different connections. The host parameter is used for SNI. The tls.Config must define an application protocol (using NextProtos).
func DialEarlyContext ¶ added in v0.19.0
func DialEarlyContext( ctx context.Context, pconn net.PacketConn, remoteAddr net.Addr, host string, tlsConf *tls.Config, config *Config, ) (EarlySession, error)
DialEarlyContext establishes a new 0-RTT QUIC connection to a server using a net.PacketConn using the provided context. See DialEarly for details.
type HandshakeTimeoutError ¶ added in v0.21.0
type HandshakeTimeoutError = qerr.HandshakeTimeoutError
type IdleTimeoutError ¶ added in v0.21.0
type IdleTimeoutError = qerr.IdleTimeoutError
type Listener ¶
type Listener interface { // Close the server. All active sessions will be closed. 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(context.Context) (Session, error) }
A Listener for incoming QUIC connections
func Listen ¶
Listen listens for QUIC connections on a given net.PacketConn. If the PacketConn satisfies the OOBCapablePacketConn interface (as a net.UDPConn does), ECN and packet info support will be enabled. In this case, ReadMsgUDP and WriteMsgUDP will be used instead of ReadFrom and WriteTo to read/write packets. A single net.PacketConn only be used for a single call to Listen. The PacketConn can be used for simultaneous calls to Dial. QUIC connection IDs are used for demultiplexing the different connections. The tls.Config must not be nil and must contain a certificate configuration. The tls.Config.CipherSuites allows setting of TLS 1.3 cipher suites. Furthermore, it must define an application control (using NextProtos). The quic.Config may be nil, in that case the default values will be used.
func ListenAddr ¶
ListenAddr creates a QUIC server listening on a given address. The tls.Config must not be nil and must contain a certificate configuration. The quic.Config may be nil, in that case the default values will be used.
type OOBCapablePacketConn ¶ added in v0.20.0
type OOBCapablePacketConn interface { net.PacketConn SyscallConn() (syscall.RawConn, error) ReadMsgUDP(b, oob []byte) (n, oobn, flags int, addr *net.UDPAddr, err error) WriteMsgUDP(b, oob []byte, addr *net.UDPAddr) (n, oobn int, err error) }
If the PacketConn passed to Dial or Listen satisfies this interface, quic-go will read the ECN bits from the IP header. In this case, ReadMsgUDP() will be used instead of ReadFrom() to read packets.
type ReceiveStream ¶ added in v0.7.0
type ReceiveStream interface { // StreamID returns the stream ID. StreamID() StreamID // 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. // If the stream was canceled by the peer, the error implements the StreamError // interface, and Canceled() == true. // If the session was closed due to a timeout, the error satisfies // the net.Error interface, and Timeout() will be true. io.Reader // CancelRead aborts receiving on this stream. // It will ask the peer to stop transmitting stream data. // Read will unblock immediately, and future Read calls will fail. // When called multiple times or after reading the io.EOF it is a no-op. CancelRead(StreamErrorCode) SetReadDeadline(t time.Time) error }
A ReceiveStream is a unidirectional Receive Stream.
type SendStream ¶ added in v0.7.0
type SendStream interface { // StreamID returns the stream ID. StreamID() StreamID // 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. // If the stream was canceled by the peer, the error implements the StreamError // interface, and Canceled() == true. // If the session was closed due to a timeout, the error satisfies // the net.Error interface, and Timeout() will be true. io.Writer // Close closes the write-direction of the stream. // Future calls to Write are not permitted after calling Close. // It must not be called concurrently with Write. // It must not be called after calling CancelWrite. io.Closer // CancelWrite aborts sending on this stream. // Data already written, but not yet delivered to the peer is not guaranteed to be delivered reliably. // Write will unblock immediately, and future calls to Write will fail. // When called multiple times or after closing the stream it is a no-op. CancelWrite(StreamErrorCode) // The context is canceled as soon as the write-side of the stream is closed. // This happens when Close() or CancelWrite() is called, or when the peer // cancels the read-side of their stream. // Warning: This API should not be considered stable and might change soon. Context() context.Context // 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 }
A SendStream is a unidirectional Send Stream.
type Session ¶
type Session interface { // AcceptStream returns the next stream opened by the peer, blocking until one is available. // If the session was closed due to a timeout, the error satisfies // the net.Error interface, and Timeout() will be true. AcceptStream(context.Context) (Stream, error) // AcceptUniStream returns the next unidirectional stream opened by the peer, blocking until one is available. // If the session was closed due to a timeout, the error satisfies // the net.Error interface, and Timeout() will be true. AcceptUniStream(context.Context) (ReceiveStream, error) // OpenStream opens a new bidirectional QUIC stream. // There is no signaling to the peer about new streams: // The peer can only accept the stream after data has been sent on the stream. // If the error is non-nil, it satisfies the net.Error interface. // When reaching the peer's stream limit, err.Temporary() will be true. // If the session was closed due to a timeout, Timeout() will be true. OpenStream() (Stream, error) // OpenStreamSync opens a new bidirectional QUIC stream. // It blocks until a new stream can be opened. // If the error is non-nil, it satisfies the net.Error interface. // If the session was closed due to a timeout, Timeout() will be true. OpenStreamSync(context.Context) (Stream, error) // OpenUniStream opens a new outgoing unidirectional QUIC stream. // If the error is non-nil, it satisfies the net.Error interface. // When reaching the peer's stream limit, Temporary() will be true. // If the session was closed due to a timeout, Timeout() will be true. OpenUniStream() (SendStream, error) // OpenUniStreamSync opens a new outgoing unidirectional QUIC stream. // It blocks until a new stream can be opened. // If the error is non-nil, it satisfies the net.Error interface. // If the session was closed due to a timeout, Timeout() will be true. OpenUniStreamSync(context.Context) (SendStream, error) // LocalAddr returns the local address. LocalAddr() net.Addr // RemoteAddr returns the address of the peer. RemoteAddr() net.Addr // CloseWithError closes the connection with an error. // The error string will be sent to the peer. CloseWithError(ApplicationErrorCode, string) 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 // ConnectionState returns basic details about the QUIC connection. // It blocks until the handshake completes. // Warning: This API should not be considered stable and might change soon. ConnectionState() ConnectionState // SendMessage sends a message as a datagram. // See https://datatracker.ietf.org/doc/draft-pauly-quic-datagram/. SendMessage([]byte) error // ReceiveMessage gets a message received in a datagram. // See https://datatracker.ietf.org/doc/draft-pauly-quic-datagram/. ReceiveMessage() ([]byte, error) }
A Session is a QUIC connection between two peers. Calls to the session (and to streams) can return the following types of errors: * ApplicationError: for errors triggered by the application running on top of QUIC * TransportError: for errors triggered by the QUIC transport (in many cases a misbehaving peer) * IdleTimeoutError: when the peer goes away unexpectedly (this is a net.Error timeout error) * HandshakeTimeoutError: when the cryptographic handshake takes too long (this is a net.Error timeout error) * StatelessResetError: when we receive a stateless reset (this is a net.Error temporary error) * VersionNegotiationError: returned by the client, when there's no version overlap between the peers
func Dial ¶
func Dial( pconn net.PacketConn, remoteAddr net.Addr, host string, tlsConf *tls.Config, config *Config, ) (Session, error)
Dial establishes a new QUIC connection to a server using a net.PacketConn. If the PacketConn satisfies the OOBCapablePacketConn interface (as a net.UDPConn does), ECN and packet info support will be enabled. In this case, ReadMsgUDP and WriteMsgUDP will be used instead of ReadFrom and WriteTo to read/write packets. The same PacketConn can be used for multiple calls to Dial and Listen, QUIC connection IDs are used for demultiplexing the different connections. The host parameter is used for SNI. The tls.Config must define an application protocol (using NextProtos).
func DialAddr ¶
DialAddr establishes a new QUIC connection to a server. It uses a new UDP connection and closes this connection when the QUIC session is closed. The hostname for SNI is taken from the given address. The tls.Config.CipherSuites allows setting of TLS 1.3 cipher suites.
func DialAddrContext ¶ added in v0.8.0
func DialAddrContext( ctx context.Context, addr string, tlsConf *tls.Config, config *Config, ) (Session, error)
DialAddrContext establishes a new QUIC connection to a server using the provided context. See DialAddr for details.
func DialContext ¶ added in v0.8.0
func DialContext( ctx context.Context, pconn net.PacketConn, remoteAddr net.Addr, host string, tlsConf *tls.Config, config *Config, ) (Session, error)
DialContext establishes a new QUIC connection to a server using a net.PacketConn using the provided context. See Dial for details.
type StatelessResetError ¶ added in v0.21.0
type StatelessResetError = qerr.StatelessResetError
type Stream ¶
type Stream interface { ReceiveStream SendStream // 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 }
Stream is the interface implemented by QUIC streams In addition to the errors listed on the Session, calls to stream functions can return a StreamError if the stream is canceled.
type StreamError ¶ added in v0.7.0
type StreamError struct { StreamID StreamID ErrorCode StreamErrorCode }
A StreamError is used for Stream.CancelRead and Stream.CancelWrite. It is also returned from Stream.Read and Stream.Write if the peer canceled reading or writing.
func (*StreamError) Error ¶ added in v0.21.0
func (e *StreamError) Error() string
func (*StreamError) Is ¶ added in v0.21.0
func (e *StreamError) Is(target error) bool
type StreamErrorCode ¶ added in v0.21.0
type StreamErrorCode = qerr.StreamErrorCode
type Token ¶ added in v0.12.0
type Token struct { // IsRetryToken encodes how the client received the token. There are two ways: // * In a Retry packet sent when trying to establish a new connection. // * In a NEW_TOKEN frame on a previous connection. IsRetryToken bool RemoteAddr string SentTime time.Time }
A Token can be used to verify the ownership of the client address.
type TokenStore ¶ added in v0.13.0
type TokenStore interface { // Pop searches for a ClientToken associated with the given key. // Since tokens are not supposed to be reused, it must remove the token from the cache. // It returns nil when no token is found. Pop(key string) (token *ClientToken) // Put adds a token to the cache with the given key. It might get called // multiple times in a connection. Put(key string, token *ClientToken) }
func NewLRUTokenStore ¶ added in v0.13.0
func NewLRUTokenStore(maxOrigins, tokensPerOrigin int) TokenStore
NewLRUTokenStore creates a new LRU cache for tokens received by the client. maxOrigins specifies how many origins this cache is saving tokens for. tokensPerOrigin specifies the maximum number of tokens per origin.
type TransportError ¶ added in v0.21.0
type TransportError = qerr.TransportError
type TransportErrorCode ¶ added in v0.21.0
type TransportErrorCode = qerr.TransportErrorCode
type VersionNegotiationError ¶ added in v0.21.0
type VersionNegotiationError = qerr.VersionNegotiationError
type VersionNumber ¶ added in v0.6.0
type VersionNumber = protocol.VersionNumber
A VersionNumber is a QUIC version number.
Source Files ¶
- buffer_pool.go
- client.go
- closed_session.go
- config.go
- conn.go
- conn_id_generator.go
- conn_id_manager.go
- conn_windows.go
- crypto_stream.go
- crypto_stream_manager.go
- datagram_queue.go
- errors.go
- frame_sorter.go
- framer.go
- interface.go
- mockgen.go
- mtu_discoverer.go
- multiplexer.go
- packet_handler_map.go
- packet_packer.go
- packet_unpacker.go
- receive_stream.go
- retransmission_queue.go
- send_conn.go
- send_queue.go
- send_stream.go
- server.go
- session.go
- stream.go
- streams_map.go
- streams_map_generic_helper.go
- streams_map_incoming_bidi.go
- streams_map_incoming_generic.go
- streams_map_incoming_uni.go
- streams_map_outgoing_bidi.go
- streams_map_outgoing_generic.go
- streams_map_outgoing_uni.go
- token_store.go
- window_update_queue.go
Directories ¶
Path | Synopsis |
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fuzzing
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integrationtests
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internal
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mocks
Package mocks is a generated GoMock package.
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Package mocks is a generated GoMock package. |
mocks/ackhandler
Package mockackhandler is a generated GoMock package.
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Package mockackhandler is a generated GoMock package. |
mocks/logging
Package mocklogging is a generated GoMock package.
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Package mocklogging is a generated GoMock package. |
mocks/quic
Package mockquic is a generated GoMock package.
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Package mockquic is a generated GoMock package. |
mocks/tls
Package mocktls is a generated GoMock package.
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Package mocktls is a generated GoMock package. |
interop
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Package logging defines a logging interface for quic-go.
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Package logging defines a logging interface for quic-go. |