From de6d2c524430287c699aaa898c1325da6afea539 Mon Sep 17 00:00:00 2001 From: Niall Sheridan Date: Wed, 20 Jun 2018 22:39:07 +0100 Subject: Update dependencies --- vendor/github.com/soheilhy/cmux/cmux.go | 269 -------------------------------- 1 file changed, 269 deletions(-) delete mode 100644 vendor/github.com/soheilhy/cmux/cmux.go (limited to 'vendor/github.com/soheilhy/cmux/cmux.go') 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) -} -- cgit v1.2.3