Remove an unused vendor

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>

7 files changed, 0 insertions, 1080 deletions

diff --git a/vendor/github.com/soheilhy/cmux/LICENSE b/vendor/github.com/soheilhy/cmux/LICENSE
deleted file mode 100644
index d64569567..000000000
--- a/vendor/github.com/soheilhy/cmux/LICENSE
+++ /dev/null
@@ -1,202 +0,0 @@
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diff --git a/vendor/github.com/soheilhy/cmux/README.md b/vendor/github.com/soheilhy/cmux/README.md
deleted file mode 100644
index 70306e6ab..000000000
--- a/vendor/github.com/soheilhy/cmux/README.md
+++ /dev/null
@@ -1,83 +0,0 @@
-# cmux: Connection Mux ![Travis Build Status](https://api.travis-ci.org/soheilhy/args.svg?branch=master "Travis Build Status") [![GoDoc](https://godoc.org/github.com/soheilhy/cmux?status.svg)](http://godoc.org/github.com/soheilhy/cmux)
-
-cmux is a generic Go library to multiplex connections based on
-their payload. Using cmux, you can serve gRPC, SSH, HTTPS, HTTP,
-Go RPC, and pretty much any other protocol on the same TCP listener.
-
-## How-To
-Simply create your main listener, create a cmux for that listener,
-and then match connections:
-```go
-// Create the main listener.
-l, err := net.Listen("tcp", ":23456")
-if err != nil {
-	log.Fatal(err)
-}
-
-// Create a cmux.
-m := cmux.New(l)
-
-// Match connections in order:
-// First grpc, then HTTP, and otherwise Go RPC/TCP.
-grpcL := m.Match(cmux.HTTP2HeaderField("content-type", "application/grpc"))
-httpL := m.Match(cmux.HTTP1Fast())
-trpcL := m.Match(cmux.Any()) // Any means anything that is not yet matched.
-
-// Create your protocol servers.
-grpcS := grpc.NewServer()
-grpchello.RegisterGreeterServer(grpcs, &server{})
-
-httpS := &http.Server{
-	Handler: &helloHTTP1Handler{},
-}
-
-trpcS := rpc.NewServer()
-trpcS.Register(&ExampleRPCRcvr{})
-
-// Use the muxed listeners for your servers.
-go grpcS.Serve(grpcL)
-go httpS.Serve(httpL)
-go trpcS.Accept(trpcL)
-
-// Start serving!
-m.Serve()
-```
-
-Take a look at [other examples in the GoDoc](http://godoc.org/github.com/soheilhy/cmux/#pkg-examples).
-
-## Docs
-* [GoDocs](https://godoc.org/github.com/soheilhy/cmux)
-
-## Performance
-There is room for improvment but, since we are only matching
-the very first bytes of a connection, the performance overheads on
-long-lived connections (i.e., RPCs and pipelined HTTP streams)
-is negligible.
-
-*TODO(soheil)*: Add benchmarks.
-
-## Limitations
-* *TLS*: `net/http` uses a type assertion to identify TLS connections; since
-cmux's lookahead-implementing connection wraps the underlying TLS connection,
-this type assertion fails.
-Because of that, you can serve HTTPS using cmux but `http.Request.TLS`
-would not be set in your handlers.
-
-* *Different Protocols on The Same Connection*: `cmux` matches the connection
-when it's accepted. For example, one connection can be either gRPC or REST, but
-not both. That is, we assume that a client connection is either used for gRPC
-or REST.
-
-* *Java gRPC Clients*: Java gRPC client blocks until it receives a SETTINGS
-frame from the server. If you are using the Java client to connect to a cmux'ed
-gRPC server please match with writers:
-```go
-grpcl := m.MatchWithWriters(cmux.HTTP2MatchHeaderFieldSendSettings("content-type", "application/grpc"))
-```
-
-# Copyright and License
-Copyright 2016 The CMux Authors. All rights reserved.
-
-See [CONTRIBUTORS](https://github.com/soheilhy/cmux/blob/master/CONTRIBUTORS)
-for the CMux Authors. Code is released under
-[the Apache 2 license](https://github.com/soheilhy/cmux/blob/master/LICENSE).
diff --git a/vendor/github.com/soheilhy/cmux/buffer.go b/vendor/github.com/soheilhy/cmux/buffer.go
deleted file mode 100644
index f8cf30a1e..000000000
--- a/vendor/github.com/soheilhy/cmux/buffer.go
+++ /dev/null
@@ -1,67 +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 (
-	"bytes"
-	"io"
-)
-
-// bufferedReader is an optimized implementation of io.Reader that behaves like
-// ```
-// io.MultiReader(bytes.NewReader(buffer.Bytes()), io.TeeReader(source, buffer))
-// ```
-// without allocating.
-type bufferedReader struct {
-	source     io.Reader
-	buffer     bytes.Buffer
-	bufferRead int
-	bufferSize int
-	sniffing   bool
-	lastErr    error
-}
-
-func (s *bufferedReader) Read(p []byte) (int, error) {
-	if s.bufferSize > s.bufferRead {
-		// If we have already read something from the buffer before, we return the
-		// same data and the last error if any. We need to immediately return,
-		// otherwise we may block for ever, if we try to be smart and call
-		// source.Read() seeking a little bit of more data.
-		bn := copy(p, s.buffer.Bytes()[s.bufferRead:s.bufferSize])
-		s.bufferRead += bn
-		return bn, s.lastErr
-	} else if !s.sniffing && s.buffer.Cap() != 0 {
-		// We don't need the buffer anymore.
-		// Reset it to release the internal slice.
-		s.buffer = bytes.Buffer{}
-	}
-
-	// If there is nothing more to return in the sniffed buffer, read from the
-	// source.
-	sn, sErr := s.source.Read(p)
-	if sn > 0 && s.sniffing {
-		s.lastErr = sErr
-		if wn, wErr := s.buffer.Write(p[:sn]); wErr != nil {
-			return wn, wErr
-		}
-	}
-	return sn, sErr
-}
-
-func (s *bufferedReader) reset(snif bool) {
-	s.sniffing = snif
-	s.bufferRead = 0
-	s.bufferSize = s.buffer.Len()
-}
diff --git a/vendor/github.com/soheilhy/cmux/cmux.go b/vendor/github.com/soheilhy/cmux/cmux.go
deleted file mode 100644
index 9de6b0a3c..000000000
--- 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)
-}
diff --git a/vendor/github.com/soheilhy/cmux/doc.go b/vendor/github.com/soheilhy/cmux/doc.go
deleted file mode 100644
index aaa8f3158..000000000
--- a/vendor/github.com/soheilhy/cmux/doc.go
+++ /dev/null
@@ -1,18 +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 is a library to multiplex network connections based on
-// their payload. Using cmux, you can serve different protocols from the
-// same listener.
-package cmux
diff --git a/vendor/github.com/soheilhy/cmux/matchers.go b/vendor/github.com/soheilhy/cmux/matchers.go
deleted file mode 100644
index 652fd8691..000000000
--- a/vendor/github.com/soheilhy/cmux/matchers.go
+++ /dev/null
@@ -1,262 +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 (
-	"bufio"
-	"crypto/tls"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"strings"
-
-	"golang.org/x/net/http2"
-	"golang.org/x/net/http2/hpack"
-)
-
-// Any is a Matcher that matches any connection.
-func Any() Matcher {
-	return func(r io.Reader) bool { return true }
-}
-
-// PrefixMatcher returns a matcher that matches a connection if it
-// starts with any of the strings in strs.
-func PrefixMatcher(strs ...string) Matcher {
-	pt := newPatriciaTreeString(strs...)
-	return pt.matchPrefix
-}
-
-func prefixByteMatcher(list ...[]byte) Matcher {
-	pt := newPatriciaTree(list...)
-	return pt.matchPrefix
-}
-
-var defaultHTTPMethods = []string{
-	"OPTIONS",
-	"GET",
-	"HEAD",
-	"POST",
-	"PUT",
-	"DELETE",
-	"TRACE",
-	"CONNECT",
-}
-
-// HTTP1Fast only matches the methods in the HTTP request.
-//
-// This matcher is very optimistic: if it returns true, it does not mean that
-// the request is a valid HTTP response. If you want a correct but slower HTTP1
-// matcher, use HTTP1 instead.
-func HTTP1Fast(extMethods ...string) Matcher {
-	return PrefixMatcher(append(defaultHTTPMethods, extMethods...)...)
-}
-
-// TLS matches HTTPS requests.
-//
-// By default, any TLS handshake packet is matched. An optional whitelist
-// of versions can be passed in to restrict the matcher, for example:
-//  TLS(tls.VersionTLS11, tls.VersionTLS12)
-func TLS(versions ...int) Matcher {
-	if len(versions) == 0 {
-		versions = []int{
-			tls.VersionSSL30,
-			tls.VersionTLS10,
-			tls.VersionTLS11,
-			tls.VersionTLS12,
-		}
-	}
-	prefixes := [][]byte{}
-	for _, v := range versions {
-		prefixes = append(prefixes, []byte{22, byte(v >> 8 & 0xff), byte(v & 0xff)})
-	}
-	return prefixByteMatcher(prefixes...)
-}
-
-const maxHTTPRead = 4096
-
-// HTTP1 parses the first line or upto 4096 bytes of the request to see if
-// the conection contains an HTTP request.
-func HTTP1() Matcher {
-	return func(r io.Reader) bool {
-		br := bufio.NewReader(&io.LimitedReader{R: r, N: maxHTTPRead})
-		l, part, err := br.ReadLine()
-		if err != nil || part {
-			return false
-		}
-
-		_, _, proto, ok := parseRequestLine(string(l))
-		if !ok {
-			return false
-		}
-
-		v, _, ok := http.ParseHTTPVersion(proto)
-		return ok && v == 1
-	}
-}
-
-// grabbed from net/http.
-func parseRequestLine(line string) (method, uri, proto string, ok bool) {
-	s1 := strings.Index(line, " ")
-	s2 := strings.Index(line[s1+1:], " ")
-	if s1 < 0 || s2 < 0 {
-		return
-	}
-	s2 += s1 + 1
-	return line[:s1], line[s1+1 : s2], line[s2+1:], true
-}
-
-// HTTP2 parses the frame header of the first frame to detect whether the
-// connection is an HTTP2 connection.
-func HTTP2() Matcher {
-	return hasHTTP2Preface
-}
-
-// HTTP1HeaderField returns a matcher matching the header fields of the first
-// request of an HTTP 1 connection.
-func HTTP1HeaderField(name, value string) Matcher {
-	return func(r io.Reader) bool {
-		return matchHTTP1Field(r, name, func(gotValue string) bool {
-			return gotValue == value
-		})
-	}
-}
-
-// HTTP1HeaderFieldPrefix returns a matcher matching the header fields of the
-// first request of an HTTP 1 connection. If the header with key name has a
-// value prefixed with valuePrefix, this will match.
-func HTTP1HeaderFieldPrefix(name, valuePrefix string) Matcher {
-	return func(r io.Reader) bool {
-		return matchHTTP1Field(r, name, func(gotValue string) bool {
-			return strings.HasPrefix(gotValue, valuePrefix)
-		})
-	}
-}
-
-// HTTP2HeaderField returns a matcher matching the header fields of the first
-// headers frame.
-func HTTP2HeaderField(name, value string) Matcher {
-	return func(r io.Reader) bool {
-		return matchHTTP2Field(ioutil.Discard, r, name, func(gotValue string) bool {
-			return gotValue == value
-		})
-	}
-}
-
-// HTTP2HeaderFieldPrefix returns a matcher matching the header fields of the
-// first headers frame. If the header with key name has a value prefixed with
-// valuePrefix, this will match.
-func HTTP2HeaderFieldPrefix(name, valuePrefix string) Matcher {
-	return func(r io.Reader) bool {
-		return matchHTTP2Field(ioutil.Discard, r, name, func(gotValue string) bool {
-			return strings.HasPrefix(gotValue, valuePrefix)
-		})
-	}
-}
-
-// HTTP2MatchHeaderFieldSendSettings matches the header field and writes the
-// settings to the server. Prefer HTTP2HeaderField over this one, if the client
-// does not block on receiving a SETTING frame.
-func HTTP2MatchHeaderFieldSendSettings(name, value string) MatchWriter {
-	return func(w io.Writer, r io.Reader) bool {
-		return matchHTTP2Field(w, r, name, func(gotValue string) bool {
-			return gotValue == value
-		})
-	}
-}
-
-// HTTP2MatchHeaderFieldPrefixSendSettings matches the header field prefix
-// and writes the settings to the server. Prefer HTTP2HeaderFieldPrefix over
-// this one, if the client does not block on receiving a SETTING frame.
-func HTTP2MatchHeaderFieldPrefixSendSettings(name, valuePrefix string) MatchWriter {
-	return func(w io.Writer, r io.Reader) bool {
-		return matchHTTP2Field(w, r, name, func(gotValue string) bool {
-			return strings.HasPrefix(gotValue, valuePrefix)
-		})
-	}
-}
-
-func hasHTTP2Preface(r io.Reader) bool {
-	var b [len(http2.ClientPreface)]byte
-	last := 0
-
-	for {
-		n, err := r.Read(b[last:])
-		if err != nil {
-			return false
-		}
-
-		last += n
-		eq := string(b[:last]) == http2.ClientPreface[:last]
-		if last == len(http2.ClientPreface) {
-			return eq
-		}
-		if !eq {
-			return false
-		}
-	}
-}
-
-func matchHTTP1Field(r io.Reader, name string, matches func(string) bool) (matched bool) {
-	req, err := http.ReadRequest(bufio.NewReader(r))
-	if err != nil {
-		return false
-	}
-
-	return matches(req.Header.Get(name))
-}
-
-func matchHTTP2Field(w io.Writer, r io.Reader, name string, matches func(string) bool) (matched bool) {
-	if !hasHTTP2Preface(r) {
-		return false
-	}
-
-	done := false
-	framer := http2.NewFramer(w, r)
-	hdec := hpack.NewDecoder(uint32(4<<10), func(hf hpack.HeaderField) {
-		if hf.Name == name {
-			done = true
-			if matches(hf.Value) {
-				matched = true
-			}
-		}
-	})
-	for {
-		f, err := framer.ReadFrame()
-		if err != nil {
-			return false
-		}
-
-		switch f := f.(type) {
-		case *http2.SettingsFrame:
-			if err := framer.WriteSettings(); err != nil {
-				return false
-			}
-		case *http2.ContinuationFrame:
-			if _, err := hdec.Write(f.HeaderBlockFragment()); err != nil {
-				return false
-			}
-			done = done || f.FrameHeader.Flags&http2.FlagHeadersEndHeaders != 0
-		case *http2.HeadersFrame:
-			if _, err := hdec.Write(f.HeaderBlockFragment()); err != nil {
-				return false
-			}
-			done = done || f.FrameHeader.Flags&http2.FlagHeadersEndHeaders != 0
-		}
-
-		if done {
-			return matched
-		}
-	}
-}
diff --git a/vendor/github.com/soheilhy/cmux/patricia.go b/vendor/github.com/soheilhy/cmux/patricia.go
deleted file mode 100644
index c3e3d85bd..000000000
--- a/vendor/github.com/soheilhy/cmux/patricia.go
+++ /dev/null
@@ -1,179 +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 (
-	"bytes"
-	"io"
-)
-
-// patriciaTree is a simple patricia tree that handles []byte instead of string
-// and cannot be changed after instantiation.
-type patriciaTree struct {
-	root     *ptNode
-	maxDepth int // max depth of the tree.
-}
-
-func newPatriciaTree(bs ...[]byte) *patriciaTree {
-	max := 0
-	for _, b := range bs {
-		if max < len(b) {
-			max = len(b)
-		}
-	}
-	return &patriciaTree{
-		root:     newNode(bs),
-		maxDepth: max + 1,
-	}
-}
-
-func newPatriciaTreeString(strs ...string) *patriciaTree {
-	b := make([][]byte, len(strs))
-	for i, s := range strs {
-		b[i] = []byte(s)
-	}
-	return newPatriciaTree(b...)
-}
-
-func (t *patriciaTree) matchPrefix(r io.Reader) bool {
-	buf := make([]byte, t.maxDepth)
-	n, _ := io.ReadFull(r, buf)
-	return t.root.match(buf[:n], true)
-}
-
-func (t *patriciaTree) match(r io.Reader) bool {
-	buf := make([]byte, t.maxDepth)
-	n, _ := io.ReadFull(r, buf)
-	return t.root.match(buf[:n], false)
-}
-
-type ptNode struct {
-	prefix   []byte
-	next     map[byte]*ptNode
-	terminal bool
-}
-
-func newNode(strs [][]byte) *ptNode {
-	if len(strs) == 0 {
-		return &ptNode{
-			prefix:   []byte{},
-			terminal: true,
-		}
-	}
-
-	if len(strs) == 1 {
-		return &ptNode{
-			prefix:   strs[0],
-			terminal: true,
-		}
-	}
-
-	p, strs := splitPrefix(strs)
-	n := &ptNode{
-		prefix: p,
-	}
-
-	nexts := make(map[byte][][]byte)
-	for _, s := range strs {
-		if len(s) == 0 {
-			n.terminal = true
-			continue
-		}
-		nexts[s[0]] = append(nexts[s[0]], s[1:])
-	}
-
-	n.next = make(map[byte]*ptNode)
-	for first, rests := range nexts {
-		n.next[first] = newNode(rests)
-	}
-
-	return n
-}
-
-func splitPrefix(bss [][]byte) (prefix []byte, rest [][]byte) {
-	if len(bss) == 0 || len(bss[0]) == 0 {
-		return prefix, bss
-	}
-
-	if len(bss) == 1 {
-		return bss[0], [][]byte{{}}
-	}
-
-	for i := 0; ; i++ {
-		var cur byte
-		eq := true
-		for j, b := range bss {
-			if len(b) <= i {
-				eq = false
-				break
-			}
-
-			if j == 0 {
-				cur = b[i]
-				continue
-			}
-
-			if cur != b[i] {
-				eq = false
-				break
-			}
-		}
-
-		if !eq {
-			break
-		}
-
-		prefix = append(prefix, cur)
-	}
-
-	rest = make([][]byte, 0, len(bss))
-	for _, b := range bss {
-		rest = append(rest, b[len(prefix):])
-	}
-
-	return prefix, rest
-}
-
-func (n *ptNode) match(b []byte, prefix bool) bool {
-	l := len(n.prefix)
-	if l > 0 {
-		if l > len(b) {
-			l = len(b)
-		}
-		if !bytes.Equal(b[:l], n.prefix) {
-			return false
-		}
-	}
-
-	if n.terminal && (prefix || len(n.prefix) == len(b)) {
-		return true
-	}
-
-	if l >= len(b) {
-		return false
-	}
-
-	nextN, ok := n.next[b[l]]
-	if !ok {
-		return false
-	}
-
-	if l == len(b) {
-		b = b[l:l]
-	} else {
-		b = b[l+1:]
-	}
-	return nextN.match(b, prefix)
-}