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-rw-r--r--vendor/github.com/soheilhy/cmux/cmux.go269
1 files changed, 0 insertions, 269 deletions
diff --git a/vendor/github.com/soheilhy/cmux/cmux.go b/vendor/github.com/soheilhy/cmux/cmux.go
deleted file mode 100644
index 9de6b0a..0000000
--- a/vendor/github.com/soheilhy/cmux/cmux.go
+++ /dev/null
@@ -1,269 +0,0 @@
-// Copyright 2016 The CMux Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-// implied. See the License for the specific language governing
-// permissions and limitations under the License.
-
-package cmux
-
-import (
- "fmt"
- "io"
- "net"
- "sync"
- "time"
-)
-
-// Matcher matches a connection based on its content.
-type Matcher func(io.Reader) bool
-
-// MatchWriter is a match that can also write response (say to do handshake).
-type MatchWriter func(io.Writer, io.Reader) bool
-
-// ErrorHandler handles an error and returns whether
-// the mux should continue serving the listener.
-type ErrorHandler func(error) bool
-
-var _ net.Error = ErrNotMatched{}
-
-// ErrNotMatched is returned whenever a connection is not matched by any of
-// the matchers registered in the multiplexer.
-type ErrNotMatched struct {
- c net.Conn
-}
-
-func (e ErrNotMatched) Error() string {
- return fmt.Sprintf("mux: connection %v not matched by an matcher",
- e.c.RemoteAddr())
-}
-
-// Temporary implements the net.Error interface.
-func (e ErrNotMatched) Temporary() bool { return true }
-
-// Timeout implements the net.Error interface.
-func (e ErrNotMatched) Timeout() bool { return false }
-
-type errListenerClosed string
-
-func (e errListenerClosed) Error() string { return string(e) }
-func (e errListenerClosed) Temporary() bool { return false }
-func (e errListenerClosed) Timeout() bool { return false }
-
-// ErrListenerClosed is returned from muxListener.Accept when the underlying
-// listener is closed.
-var ErrListenerClosed = errListenerClosed("mux: listener closed")
-
-// for readability of readTimeout
-var noTimeout time.Duration
-
-// New instantiates a new connection multiplexer.
-func New(l net.Listener) CMux {
- return &cMux{
- root: l,
- bufLen: 1024,
- errh: func(_ error) bool { return true },
- donec: make(chan struct{}),
- readTimeout: noTimeout,
- }
-}
-
-// CMux is a multiplexer for network connections.
-type CMux interface {
- // Match returns a net.Listener that sees (i.e., accepts) only
- // the connections matched by at least one of the matcher.
- //
- // The order used to call Match determines the priority of matchers.
- Match(...Matcher) net.Listener
- // MatchWithWriters returns a net.Listener that accepts only the
- // connections that matched by at least of the matcher writers.
- //
- // Prefer Matchers over MatchWriters, since the latter can write on the
- // connection before the actual handler.
- //
- // The order used to call Match determines the priority of matchers.
- MatchWithWriters(...MatchWriter) net.Listener
- // Serve starts multiplexing the listener. Serve blocks and perhaps
- // should be invoked concurrently within a go routine.
- Serve() error
- // HandleError registers an error handler that handles listener errors.
- HandleError(ErrorHandler)
- // sets a timeout for the read of matchers
- SetReadTimeout(time.Duration)
-}
-
-type matchersListener struct {
- ss []MatchWriter
- l muxListener
-}
-
-type cMux struct {
- root net.Listener
- bufLen int
- errh ErrorHandler
- donec chan struct{}
- sls []matchersListener
- readTimeout time.Duration
-}
-
-func matchersToMatchWriters(matchers []Matcher) []MatchWriter {
- mws := make([]MatchWriter, 0, len(matchers))
- for _, m := range matchers {
- mws = append(mws, func(w io.Writer, r io.Reader) bool {
- return m(r)
- })
- }
- return mws
-}
-
-func (m *cMux) Match(matchers ...Matcher) net.Listener {
- mws := matchersToMatchWriters(matchers)
- return m.MatchWithWriters(mws...)
-}
-
-func (m *cMux) MatchWithWriters(matchers ...MatchWriter) net.Listener {
- ml := muxListener{
- Listener: m.root,
- connc: make(chan net.Conn, m.bufLen),
- }
- m.sls = append(m.sls, matchersListener{ss: matchers, l: ml})
- return ml
-}
-
-func (m *cMux) SetReadTimeout(t time.Duration) {
- m.readTimeout = t
-}
-
-func (m *cMux) Serve() error {
- var wg sync.WaitGroup
-
- defer func() {
- close(m.donec)
- wg.Wait()
-
- for _, sl := range m.sls {
- close(sl.l.connc)
- // Drain the connections enqueued for the listener.
- for c := range sl.l.connc {
- _ = c.Close()
- }
- }
- }()
-
- for {
- c, err := m.root.Accept()
- if err != nil {
- if !m.handleErr(err) {
- return err
- }
- continue
- }
-
- wg.Add(1)
- go m.serve(c, m.donec, &wg)
- }
-}
-
-func (m *cMux) serve(c net.Conn, donec <-chan struct{}, wg *sync.WaitGroup) {
- defer wg.Done()
-
- muc := newMuxConn(c)
- if m.readTimeout > noTimeout {
- _ = c.SetReadDeadline(time.Now().Add(m.readTimeout))
- }
- for _, sl := range m.sls {
- for _, s := range sl.ss {
- matched := s(muc.Conn, muc.startSniffing())
- if matched {
- muc.doneSniffing()
- if m.readTimeout > noTimeout {
- _ = c.SetReadDeadline(time.Time{})
- }
- select {
- case sl.l.connc <- muc:
- case <-donec:
- _ = c.Close()
- }
- return
- }
- }
- }
-
- _ = c.Close()
- err := ErrNotMatched{c: c}
- if !m.handleErr(err) {
- _ = m.root.Close()
- }
-}
-
-func (m *cMux) HandleError(h ErrorHandler) {
- m.errh = h
-}
-
-func (m *cMux) handleErr(err error) bool {
- if !m.errh(err) {
- return false
- }
-
- if ne, ok := err.(net.Error); ok {
- return ne.Temporary()
- }
-
- return false
-}
-
-type muxListener struct {
- net.Listener
- connc chan net.Conn
-}
-
-func (l muxListener) Accept() (net.Conn, error) {
- c, ok := <-l.connc
- if !ok {
- return nil, ErrListenerClosed
- }
- return c, nil
-}
-
-// MuxConn wraps a net.Conn and provides transparent sniffing of connection data.
-type MuxConn struct {
- net.Conn
- buf bufferedReader
-}
-
-func newMuxConn(c net.Conn) *MuxConn {
- return &MuxConn{
- Conn: c,
- buf: bufferedReader{source: c},
- }
-}
-
-// From the io.Reader documentation:
-//
-// When Read encounters an error or end-of-file condition after
-// successfully reading n > 0 bytes, it returns the number of
-// bytes read. It may return the (non-nil) error from the same call
-// or return the error (and n == 0) from a subsequent call.
-// An instance of this general case is that a Reader returning
-// a non-zero number of bytes at the end of the input stream may
-// return either err == EOF or err == nil. The next Read should
-// return 0, EOF.
-func (m *MuxConn) Read(p []byte) (int, error) {
- return m.buf.Read(p)
-}
-
-func (m *MuxConn) startSniffing() io.Reader {
- m.buf.reset(true)
- return &m.buf
-}
-
-func (m *MuxConn) doneSniffing() {
- m.buf.reset(false)
-}