/
interface.go
executable file
·144 lines (133 loc) · 6.47 KB
/
interface.go
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package quic
import (
"context"
"io"
"net"
"time"
"github.com/mutdroco/mpquic_for_video_stream_backend/internal/handshake"
"github.com/mutdroco/mpquic_for_video_stream_backend/internal/protocol"
)
// The StreamID is the ID of a QUIC stream.
type StreamID = protocol.StreamID
// A VersionNumber is a QUIC version number.
type VersionNumber = protocol.VersionNumber
// A Cookie can be used to verify the ownership of the client address.
type Cookie = handshake.Cookie
// Stream is the interface implemented by QUIC streams
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)
}
// A Session is a QUIC connection between two peers.
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 NonFWSession is a QUIC connection between two peers half-way through the handshake.
// The communication is encrypted, but not yet forward secure.
type NonFWSession interface {
Session
WaitUntilHandshakeComplete() error
}
// Config contains all configuration data needed for a QUIC server or client.
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
// Select Scheduler to Choose default will be round-robin
Scheduler string
WeightsFile string
Training bool
Epsilon float64
AllowedCongestion int
DumpExperiences bool
}
// A Listener for incoming QUIC connections
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)
}