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authorDaniel J Walsh <dwalsh@redhat.com>2022-02-03 18:33:22 -0500
committerDaniel J Walsh <dwalsh@redhat.com>2022-02-03 18:33:22 -0500
commit1d1b2b1509646e07ab4a984c7622fa002a0fcdb7 (patch)
treefd4078e58bc9ab0b6c2ef1938017ce5844f97744 /vendor/golang.org/x/net
parent608b6142edb7a4e179ce6d2ae69707be28f29359 (diff)
downloadpodman-1d1b2b1509646e07ab4a984c7622fa002a0fcdb7.tar.gz
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Update containers/buildah v1.24.1
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Diffstat (limited to 'vendor/golang.org/x/net')
-rw-r--r--vendor/golang.org/x/net/http2/server.go10
-rw-r--r--vendor/golang.org/x/net/http2/transport.go78
-rw-r--r--vendor/golang.org/x/net/http2/writesched.go4
-rw-r--r--vendor/golang.org/x/net/http2/writesched_random.go6
-rw-r--r--vendor/golang.org/x/net/internal/socks/client.go168
-rw-r--r--vendor/golang.org/x/net/internal/socks/socks.go317
-rw-r--r--vendor/golang.org/x/net/proxy/dial.go54
-rw-r--r--vendor/golang.org/x/net/proxy/direct.go31
-rw-r--r--vendor/golang.org/x/net/proxy/per_host.go155
-rw-r--r--vendor/golang.org/x/net/proxy/proxy.go149
-rw-r--r--vendor/golang.org/x/net/proxy/socks5.go42
11 files changed, 61 insertions, 953 deletions
diff --git a/vendor/golang.org/x/net/http2/server.go b/vendor/golang.org/x/net/http2/server.go
index c67e9b7f5..e644d9b2f 100644
--- a/vendor/golang.org/x/net/http2/server.go
+++ b/vendor/golang.org/x/net/http2/server.go
@@ -719,7 +719,15 @@ func (sc *serverConn) canonicalHeader(v string) string {
sc.canonHeader = make(map[string]string)
}
cv = http.CanonicalHeaderKey(v)
- sc.canonHeader[v] = cv
+ // maxCachedCanonicalHeaders is an arbitrarily-chosen limit on the number of
+ // entries in the canonHeader cache. This should be larger than the number
+ // of unique, uncommon header keys likely to be sent by the peer, while not
+ // so high as to permit unreasonable memory usage if the peer sends an unbounded
+ // number of unique header keys.
+ const maxCachedCanonicalHeaders = 32
+ if len(sc.canonHeader) < maxCachedCanonicalHeaders {
+ sc.canonHeader[v] = cv
+ }
return cv
}
diff --git a/vendor/golang.org/x/net/http2/transport.go b/vendor/golang.org/x/net/http2/transport.go
index b5e2ac64d..f135b0f75 100644
--- a/vendor/golang.org/x/net/http2/transport.go
+++ b/vendor/golang.org/x/net/http2/transport.go
@@ -1124,36 +1124,49 @@ func (cc *ClientConn) RoundTrip(req *http.Request) (*http.Response, error) {
}
}
+ handleResponseHeaders := func() (*http.Response, error) {
+ res := cs.res
+ if res.StatusCode > 299 {
+ // On error or status code 3xx, 4xx, 5xx, etc abort any
+ // ongoing write, assuming that the server doesn't care
+ // about our request body. If the server replied with 1xx or
+ // 2xx, however, then assume the server DOES potentially
+ // want our body (e.g. full-duplex streaming:
+ // golang.org/issue/13444). If it turns out the server
+ // doesn't, they'll RST_STREAM us soon enough. This is a
+ // heuristic to avoid adding knobs to Transport. Hopefully
+ // we can keep it.
+ cs.abortRequestBodyWrite()
+ }
+ res.Request = req
+ res.TLS = cc.tlsState
+ if res.Body == noBody && actualContentLength(req) == 0 {
+ // If there isn't a request or response body still being
+ // written, then wait for the stream to be closed before
+ // RoundTrip returns.
+ if err := waitDone(); err != nil {
+ return nil, err
+ }
+ }
+ return res, nil
+ }
+
for {
select {
case <-cs.respHeaderRecv:
- res := cs.res
- if res.StatusCode > 299 {
- // On error or status code 3xx, 4xx, 5xx, etc abort any
- // ongoing write, assuming that the server doesn't care
- // about our request body. If the server replied with 1xx or
- // 2xx, however, then assume the server DOES potentially
- // want our body (e.g. full-duplex streaming:
- // golang.org/issue/13444). If it turns out the server
- // doesn't, they'll RST_STREAM us soon enough. This is a
- // heuristic to avoid adding knobs to Transport. Hopefully
- // we can keep it.
- cs.abortRequestBodyWrite()
- }
- res.Request = req
- res.TLS = cc.tlsState
- if res.Body == noBody && actualContentLength(req) == 0 {
- // If there isn't a request or response body still being
- // written, then wait for the stream to be closed before
- // RoundTrip returns.
- if err := waitDone(); err != nil {
- return nil, err
- }
- }
- return res, nil
+ return handleResponseHeaders()
case <-cs.abort:
- waitDone()
- return nil, cs.abortErr
+ select {
+ case <-cs.respHeaderRecv:
+ // If both cs.respHeaderRecv and cs.abort are signaling,
+ // pick respHeaderRecv. The server probably wrote the
+ // response and immediately reset the stream.
+ // golang.org/issue/49645
+ return handleResponseHeaders()
+ default:
+ waitDone()
+ return nil, cs.abortErr
+ }
case <-ctx.Done():
err := ctx.Err()
cs.abortStream(err)
@@ -1239,12 +1252,12 @@ func (cs *clientStream) writeRequest(req *http.Request) (err error) {
}
continueTimeout := cc.t.expectContinueTimeout()
- if continueTimeout != 0 &&
- !httpguts.HeaderValuesContainsToken(
- req.Header["Expect"],
- "100-continue") {
- continueTimeout = 0
- cs.on100 = make(chan struct{}, 1)
+ if continueTimeout != 0 {
+ if !httpguts.HeaderValuesContainsToken(req.Header["Expect"], "100-continue") {
+ continueTimeout = 0
+ } else {
+ cs.on100 = make(chan struct{}, 1)
+ }
}
// Past this point (where we send request headers), it is possible for
@@ -1313,6 +1326,7 @@ func (cs *clientStream) writeRequest(req *http.Request) (err error) {
case <-respHeaderTimer:
return errTimeout
case <-respHeaderRecv:
+ respHeaderRecv = nil
respHeaderTimer = nil // keep waiting for END_STREAM
case <-cs.abort:
return cs.abortErr
diff --git a/vendor/golang.org/x/net/http2/writesched.go b/vendor/golang.org/x/net/http2/writesched.go
index f24d2b1e7..c7cd00173 100644
--- a/vendor/golang.org/x/net/http2/writesched.go
+++ b/vendor/golang.org/x/net/http2/writesched.go
@@ -32,7 +32,8 @@ type WriteScheduler interface {
// Pop dequeues the next frame to write. Returns false if no frames can
// be written. Frames with a given wr.StreamID() are Pop'd in the same
- // order they are Push'd. No frames should be discarded except by CloseStream.
+ // order they are Push'd, except RST_STREAM frames. No frames should be
+ // discarded except by CloseStream.
Pop() (wr FrameWriteRequest, ok bool)
}
@@ -52,6 +53,7 @@ type FrameWriteRequest struct {
// stream is the stream on which this frame will be written.
// nil for non-stream frames like PING and SETTINGS.
+ // nil for RST_STREAM streams, which use the StreamError.StreamID field instead.
stream *stream
// done, if non-nil, must be a buffered channel with space for
diff --git a/vendor/golang.org/x/net/http2/writesched_random.go b/vendor/golang.org/x/net/http2/writesched_random.go
index 9a7b9e581..f2e55e05c 100644
--- a/vendor/golang.org/x/net/http2/writesched_random.go
+++ b/vendor/golang.org/x/net/http2/writesched_random.go
@@ -45,11 +45,11 @@ func (ws *randomWriteScheduler) AdjustStream(streamID uint32, priority PriorityP
}
func (ws *randomWriteScheduler) Push(wr FrameWriteRequest) {
- id := wr.StreamID()
- if id == 0 {
+ if wr.isControl() {
ws.zero.push(wr)
return
}
+ id := wr.StreamID()
q, ok := ws.sq[id]
if !ok {
q = ws.queuePool.get()
@@ -59,7 +59,7 @@ func (ws *randomWriteScheduler) Push(wr FrameWriteRequest) {
}
func (ws *randomWriteScheduler) Pop() (FrameWriteRequest, bool) {
- // Control frames first.
+ // Control and RST_STREAM frames first.
if !ws.zero.empty() {
return ws.zero.shift(), true
}
diff --git a/vendor/golang.org/x/net/internal/socks/client.go b/vendor/golang.org/x/net/internal/socks/client.go
deleted file mode 100644
index 3d6f516a5..000000000
--- a/vendor/golang.org/x/net/internal/socks/client.go
+++ /dev/null
@@ -1,168 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package socks
-
-import (
- "context"
- "errors"
- "io"
- "net"
- "strconv"
- "time"
-)
-
-var (
- noDeadline = time.Time{}
- aLongTimeAgo = time.Unix(1, 0)
-)
-
-func (d *Dialer) connect(ctx context.Context, c net.Conn, address string) (_ net.Addr, ctxErr error) {
- host, port, err := splitHostPort(address)
- if err != nil {
- return nil, err
- }
- if deadline, ok := ctx.Deadline(); ok && !deadline.IsZero() {
- c.SetDeadline(deadline)
- defer c.SetDeadline(noDeadline)
- }
- if ctx != context.Background() {
- errCh := make(chan error, 1)
- done := make(chan struct{})
- defer func() {
- close(done)
- if ctxErr == nil {
- ctxErr = <-errCh
- }
- }()
- go func() {
- select {
- case <-ctx.Done():
- c.SetDeadline(aLongTimeAgo)
- errCh <- ctx.Err()
- case <-done:
- errCh <- nil
- }
- }()
- }
-
- b := make([]byte, 0, 6+len(host)) // the size here is just an estimate
- b = append(b, Version5)
- if len(d.AuthMethods) == 0 || d.Authenticate == nil {
- b = append(b, 1, byte(AuthMethodNotRequired))
- } else {
- ams := d.AuthMethods
- if len(ams) > 255 {
- return nil, errors.New("too many authentication methods")
- }
- b = append(b, byte(len(ams)))
- for _, am := range ams {
- b = append(b, byte(am))
- }
- }
- if _, ctxErr = c.Write(b); ctxErr != nil {
- return
- }
-
- if _, ctxErr = io.ReadFull(c, b[:2]); ctxErr != nil {
- return
- }
- if b[0] != Version5 {
- return nil, errors.New("unexpected protocol version " + strconv.Itoa(int(b[0])))
- }
- am := AuthMethod(b[1])
- if am == AuthMethodNoAcceptableMethods {
- return nil, errors.New("no acceptable authentication methods")
- }
- if d.Authenticate != nil {
- if ctxErr = d.Authenticate(ctx, c, am); ctxErr != nil {
- return
- }
- }
-
- b = b[:0]
- b = append(b, Version5, byte(d.cmd), 0)
- if ip := net.ParseIP(host); ip != nil {
- if ip4 := ip.To4(); ip4 != nil {
- b = append(b, AddrTypeIPv4)
- b = append(b, ip4...)
- } else if ip6 := ip.To16(); ip6 != nil {
- b = append(b, AddrTypeIPv6)
- b = append(b, ip6...)
- } else {
- return nil, errors.New("unknown address type")
- }
- } else {
- if len(host) > 255 {
- return nil, errors.New("FQDN too long")
- }
- b = append(b, AddrTypeFQDN)
- b = append(b, byte(len(host)))
- b = append(b, host...)
- }
- b = append(b, byte(port>>8), byte(port))
- if _, ctxErr = c.Write(b); ctxErr != nil {
- return
- }
-
- if _, ctxErr = io.ReadFull(c, b[:4]); ctxErr != nil {
- return
- }
- if b[0] != Version5 {
- return nil, errors.New("unexpected protocol version " + strconv.Itoa(int(b[0])))
- }
- if cmdErr := Reply(b[1]); cmdErr != StatusSucceeded {
- return nil, errors.New("unknown error " + cmdErr.String())
- }
- if b[2] != 0 {
- return nil, errors.New("non-zero reserved field")
- }
- l := 2
- var a Addr
- switch b[3] {
- case AddrTypeIPv4:
- l += net.IPv4len
- a.IP = make(net.IP, net.IPv4len)
- case AddrTypeIPv6:
- l += net.IPv6len
- a.IP = make(net.IP, net.IPv6len)
- case AddrTypeFQDN:
- if _, err := io.ReadFull(c, b[:1]); err != nil {
- return nil, err
- }
- l += int(b[0])
- default:
- return nil, errors.New("unknown address type " + strconv.Itoa(int(b[3])))
- }
- if cap(b) < l {
- b = make([]byte, l)
- } else {
- b = b[:l]
- }
- if _, ctxErr = io.ReadFull(c, b); ctxErr != nil {
- return
- }
- if a.IP != nil {
- copy(a.IP, b)
- } else {
- a.Name = string(b[:len(b)-2])
- }
- a.Port = int(b[len(b)-2])<<8 | int(b[len(b)-1])
- return &a, nil
-}
-
-func splitHostPort(address string) (string, int, error) {
- host, port, err := net.SplitHostPort(address)
- if err != nil {
- return "", 0, err
- }
- portnum, err := strconv.Atoi(port)
- if err != nil {
- return "", 0, err
- }
- if 1 > portnum || portnum > 0xffff {
- return "", 0, errors.New("port number out of range " + port)
- }
- return host, portnum, nil
-}
diff --git a/vendor/golang.org/x/net/internal/socks/socks.go b/vendor/golang.org/x/net/internal/socks/socks.go
deleted file mode 100644
index 97db2340e..000000000
--- a/vendor/golang.org/x/net/internal/socks/socks.go
+++ /dev/null
@@ -1,317 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package socks provides a SOCKS version 5 client implementation.
-//
-// SOCKS protocol version 5 is defined in RFC 1928.
-// Username/Password authentication for SOCKS version 5 is defined in
-// RFC 1929.
-package socks
-
-import (
- "context"
- "errors"
- "io"
- "net"
- "strconv"
-)
-
-// A Command represents a SOCKS command.
-type Command int
-
-func (cmd Command) String() string {
- switch cmd {
- case CmdConnect:
- return "socks connect"
- case cmdBind:
- return "socks bind"
- default:
- return "socks " + strconv.Itoa(int(cmd))
- }
-}
-
-// An AuthMethod represents a SOCKS authentication method.
-type AuthMethod int
-
-// A Reply represents a SOCKS command reply code.
-type Reply int
-
-func (code Reply) String() string {
- switch code {
- case StatusSucceeded:
- return "succeeded"
- case 0x01:
- return "general SOCKS server failure"
- case 0x02:
- return "connection not allowed by ruleset"
- case 0x03:
- return "network unreachable"
- case 0x04:
- return "host unreachable"
- case 0x05:
- return "connection refused"
- case 0x06:
- return "TTL expired"
- case 0x07:
- return "command not supported"
- case 0x08:
- return "address type not supported"
- default:
- return "unknown code: " + strconv.Itoa(int(code))
- }
-}
-
-// Wire protocol constants.
-const (
- Version5 = 0x05
-
- AddrTypeIPv4 = 0x01
- AddrTypeFQDN = 0x03
- AddrTypeIPv6 = 0x04
-
- CmdConnect Command = 0x01 // establishes an active-open forward proxy connection
- cmdBind Command = 0x02 // establishes a passive-open forward proxy connection
-
- AuthMethodNotRequired AuthMethod = 0x00 // no authentication required
- AuthMethodUsernamePassword AuthMethod = 0x02 // use username/password
- AuthMethodNoAcceptableMethods AuthMethod = 0xff // no acceptable authentication methods
-
- StatusSucceeded Reply = 0x00
-)
-
-// An Addr represents a SOCKS-specific address.
-// Either Name or IP is used exclusively.
-type Addr struct {
- Name string // fully-qualified domain name
- IP net.IP
- Port int
-}
-
-func (a *Addr) Network() string { return "socks" }
-
-func (a *Addr) String() string {
- if a == nil {
- return "<nil>"
- }
- port := strconv.Itoa(a.Port)
- if a.IP == nil {
- return net.JoinHostPort(a.Name, port)
- }
- return net.JoinHostPort(a.IP.String(), port)
-}
-
-// A Conn represents a forward proxy connection.
-type Conn struct {
- net.Conn
-
- boundAddr net.Addr
-}
-
-// BoundAddr returns the address assigned by the proxy server for
-// connecting to the command target address from the proxy server.
-func (c *Conn) BoundAddr() net.Addr {
- if c == nil {
- return nil
- }
- return c.boundAddr
-}
-
-// A Dialer holds SOCKS-specific options.
-type Dialer struct {
- cmd Command // either CmdConnect or cmdBind
- proxyNetwork string // network between a proxy server and a client
- proxyAddress string // proxy server address
-
- // ProxyDial specifies the optional dial function for
- // establishing the transport connection.
- ProxyDial func(context.Context, string, string) (net.Conn, error)
-
- // AuthMethods specifies the list of request authentication
- // methods.
- // If empty, SOCKS client requests only AuthMethodNotRequired.
- AuthMethods []AuthMethod
-
- // Authenticate specifies the optional authentication
- // function. It must be non-nil when AuthMethods is not empty.
- // It must return an error when the authentication is failed.
- Authenticate func(context.Context, io.ReadWriter, AuthMethod) error
-}
-
-// DialContext connects to the provided address on the provided
-// network.
-//
-// The returned error value may be a net.OpError. When the Op field of
-// net.OpError contains "socks", the Source field contains a proxy
-// server address and the Addr field contains a command target
-// address.
-//
-// See func Dial of the net package of standard library for a
-// description of the network and address parameters.
-func (d *Dialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
- if err := d.validateTarget(network, address); err != nil {
- proxy, dst, _ := d.pathAddrs(address)
- return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err}
- }
- if ctx == nil {
- proxy, dst, _ := d.pathAddrs(address)
- return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: errors.New("nil context")}
- }
- var err error
- var c net.Conn
- if d.ProxyDial != nil {
- c, err = d.ProxyDial(ctx, d.proxyNetwork, d.proxyAddress)
- } else {
- var dd net.Dialer
- c, err = dd.DialContext(ctx, d.proxyNetwork, d.proxyAddress)
- }
- if err != nil {
- proxy, dst, _ := d.pathAddrs(address)
- return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err}
- }
- a, err := d.connect(ctx, c, address)
- if err != nil {
- c.Close()
- proxy, dst, _ := d.pathAddrs(address)
- return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err}
- }
- return &Conn{Conn: c, boundAddr: a}, nil
-}
-
-// DialWithConn initiates a connection from SOCKS server to the target
-// network and address using the connection c that is already
-// connected to the SOCKS server.
-//
-// It returns the connection's local address assigned by the SOCKS
-// server.
-func (d *Dialer) DialWithConn(ctx context.Context, c net.Conn, network, address string) (net.Addr, error) {
- if err := d.validateTarget(network, address); err != nil {
- proxy, dst, _ := d.pathAddrs(address)
- return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err}
- }
- if ctx == nil {
- proxy, dst, _ := d.pathAddrs(address)
- return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: errors.New("nil context")}
- }
- a, err := d.connect(ctx, c, address)
- if err != nil {
- proxy, dst, _ := d.pathAddrs(address)
- return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err}
- }
- return a, nil
-}
-
-// Dial connects to the provided address on the provided network.
-//
-// Unlike DialContext, it returns a raw transport connection instead
-// of a forward proxy connection.
-//
-// Deprecated: Use DialContext or DialWithConn instead.
-func (d *Dialer) Dial(network, address string) (net.Conn, error) {
- if err := d.validateTarget(network, address); err != nil {
- proxy, dst, _ := d.pathAddrs(address)
- return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err}
- }
- var err error
- var c net.Conn
- if d.ProxyDial != nil {
- c, err = d.ProxyDial(context.Background(), d.proxyNetwork, d.proxyAddress)
- } else {
- c, err = net.Dial(d.proxyNetwork, d.proxyAddress)
- }
- if err != nil {
- proxy, dst, _ := d.pathAddrs(address)
- return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err}
- }
- if _, err := d.DialWithConn(context.Background(), c, network, address); err != nil {
- c.Close()
- return nil, err
- }
- return c, nil
-}
-
-func (d *Dialer) validateTarget(network, address string) error {
- switch network {
- case "tcp", "tcp6", "tcp4":
- default:
- return errors.New("network not implemented")
- }
- switch d.cmd {
- case CmdConnect, cmdBind:
- default:
- return errors.New("command not implemented")
- }
- return nil
-}
-
-func (d *Dialer) pathAddrs(address string) (proxy, dst net.Addr, err error) {
- for i, s := range []string{d.proxyAddress, address} {
- host, port, err := splitHostPort(s)
- if err != nil {
- return nil, nil, err
- }
- a := &Addr{Port: port}
- a.IP = net.ParseIP(host)
- if a.IP == nil {
- a.Name = host
- }
- if i == 0 {
- proxy = a
- } else {
- dst = a
- }
- }
- return
-}
-
-// NewDialer returns a new Dialer that dials through the provided
-// proxy server's network and address.
-func NewDialer(network, address string) *Dialer {
- return &Dialer{proxyNetwork: network, proxyAddress: address, cmd: CmdConnect}
-}
-
-const (
- authUsernamePasswordVersion = 0x01
- authStatusSucceeded = 0x00
-)
-
-// UsernamePassword are the credentials for the username/password
-// authentication method.
-type UsernamePassword struct {
- Username string
- Password string
-}
-
-// Authenticate authenticates a pair of username and password with the
-// proxy server.
-func (up *UsernamePassword) Authenticate(ctx context.Context, rw io.ReadWriter, auth AuthMethod) error {
- switch auth {
- case AuthMethodNotRequired:
- return nil
- case AuthMethodUsernamePassword:
- if len(up.Username) == 0 || len(up.Username) > 255 || len(up.Password) == 0 || len(up.Password) > 255 {
- return errors.New("invalid username/password")
- }
- b := []byte{authUsernamePasswordVersion}
- b = append(b, byte(len(up.Username)))
- b = append(b, up.Username...)
- b = append(b, byte(len(up.Password)))
- b = append(b, up.Password...)
- // TODO(mikio): handle IO deadlines and cancelation if
- // necessary
- if _, err := rw.Write(b); err != nil {
- return err
- }
- if _, err := io.ReadFull(rw, b[:2]); err != nil {
- return err
- }
- if b[0] != authUsernamePasswordVersion {
- return errors.New("invalid username/password version")
- }
- if b[1] != authStatusSucceeded {
- return errors.New("username/password authentication failed")
- }
- return nil
- }
- return errors.New("unsupported authentication method " + strconv.Itoa(int(auth)))
-}
diff --git a/vendor/golang.org/x/net/proxy/dial.go b/vendor/golang.org/x/net/proxy/dial.go
deleted file mode 100644
index 811c2e4e9..000000000
--- a/vendor/golang.org/x/net/proxy/dial.go
+++ /dev/null
@@ -1,54 +0,0 @@
-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package proxy
-
-import (
- "context"
- "net"
-)
-
-// A ContextDialer dials using a context.
-type ContextDialer interface {
- DialContext(ctx context.Context, network, address string) (net.Conn, error)
-}
-
-// Dial works like DialContext on net.Dialer but using a dialer returned by FromEnvironment.
-//
-// The passed ctx is only used for returning the Conn, not the lifetime of the Conn.
-//
-// Custom dialers (registered via RegisterDialerType) that do not implement ContextDialer
-// can leak a goroutine for as long as it takes the underlying Dialer implementation to timeout.
-//
-// A Conn returned from a successful Dial after the context has been cancelled will be immediately closed.
-func Dial(ctx context.Context, network, address string) (net.Conn, error) {
- d := FromEnvironment()
- if xd, ok := d.(ContextDialer); ok {
- return xd.DialContext(ctx, network, address)
- }
- return dialContext(ctx, d, network, address)
-}
-
-// WARNING: this can leak a goroutine for as long as the underlying Dialer implementation takes to timeout
-// A Conn returned from a successful Dial after the context has been cancelled will be immediately closed.
-func dialContext(ctx context.Context, d Dialer, network, address string) (net.Conn, error) {
- var (
- conn net.Conn
- done = make(chan struct{}, 1)
- err error
- )
- go func() {
- conn, err = d.Dial(network, address)
- close(done)
- if conn != nil && ctx.Err() != nil {
- conn.Close()
- }
- }()
- select {
- case <-ctx.Done():
- err = ctx.Err()
- case <-done:
- }
- return conn, err
-}
diff --git a/vendor/golang.org/x/net/proxy/direct.go b/vendor/golang.org/x/net/proxy/direct.go
deleted file mode 100644
index 3d66bdef9..000000000
--- a/vendor/golang.org/x/net/proxy/direct.go
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package proxy
-
-import (
- "context"
- "net"
-)
-
-type direct struct{}
-
-// Direct implements Dialer by making network connections directly using net.Dial or net.DialContext.
-var Direct = direct{}
-
-var (
- _ Dialer = Direct
- _ ContextDialer = Direct
-)
-
-// Dial directly invokes net.Dial with the supplied parameters.
-func (direct) Dial(network, addr string) (net.Conn, error) {
- return net.Dial(network, addr)
-}
-
-// DialContext instantiates a net.Dialer and invokes its DialContext receiver with the supplied parameters.
-func (direct) DialContext(ctx context.Context, network, addr string) (net.Conn, error) {
- var d net.Dialer
- return d.DialContext(ctx, network, addr)
-}
diff --git a/vendor/golang.org/x/net/proxy/per_host.go b/vendor/golang.org/x/net/proxy/per_host.go
deleted file mode 100644
index 573fe79e8..000000000
--- a/vendor/golang.org/x/net/proxy/per_host.go
+++ /dev/null
@@ -1,155 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package proxy
-
-import (
- "context"
- "net"
- "strings"
-)
-
-// A PerHost directs connections to a default Dialer unless the host name
-// requested matches one of a number of exceptions.
-type PerHost struct {
- def, bypass Dialer
-
- bypassNetworks []*net.IPNet
- bypassIPs []net.IP
- bypassZones []string
- bypassHosts []string
-}
-
-// NewPerHost returns a PerHost Dialer that directs connections to either
-// defaultDialer or bypass, depending on whether the connection matches one of
-// the configured rules.
-func NewPerHost(defaultDialer, bypass Dialer) *PerHost {
- return &PerHost{
- def: defaultDialer,
- bypass: bypass,
- }
-}
-
-// Dial connects to the address addr on the given network through either
-// defaultDialer or bypass.
-func (p *PerHost) Dial(network, addr string) (c net.Conn, err error) {
- host, _, err := net.SplitHostPort(addr)
- if err != nil {
- return nil, err
- }
-
- return p.dialerForRequest(host).Dial(network, addr)
-}
-
-// DialContext connects to the address addr on the given network through either
-// defaultDialer or bypass.
-func (p *PerHost) DialContext(ctx context.Context, network, addr string) (c net.Conn, err error) {
- host, _, err := net.SplitHostPort(addr)
- if err != nil {
- return nil, err
- }
- d := p.dialerForRequest(host)
- if x, ok := d.(ContextDialer); ok {
- return x.DialContext(ctx, network, addr)
- }
- return dialContext(ctx, d, network, addr)
-}
-
-func (p *PerHost) dialerForRequest(host string) Dialer {
- if ip := net.ParseIP(host); ip != nil {
- for _, net := range p.bypassNetworks {
- if net.Contains(ip) {
- return p.bypass
- }
- }
- for _, bypassIP := range p.bypassIPs {
- if bypassIP.Equal(ip) {
- return p.bypass
- }
- }
- return p.def
- }
-
- for _, zone := range p.bypassZones {
- if strings.HasSuffix(host, zone) {
- return p.bypass
- }
- if host == zone[1:] {
- // For a zone ".example.com", we match "example.com"
- // too.
- return p.bypass
- }
- }
- for _, bypassHost := range p.bypassHosts {
- if bypassHost == host {
- return p.bypass
- }
- }
- return p.def
-}
-
-// AddFromString parses a string that contains comma-separated values
-// specifying hosts that should use the bypass proxy. Each value is either an
-// IP address, a CIDR range, a zone (*.example.com) or a host name
-// (localhost). A best effort is made to parse the string and errors are
-// ignored.
-func (p *PerHost) AddFromString(s string) {
- hosts := strings.Split(s, ",")
- for _, host := range hosts {
- host = strings.TrimSpace(host)
- if len(host) == 0 {
- continue
- }
- if strings.Contains(host, "/") {
- // We assume that it's a CIDR address like 127.0.0.0/8
- if _, net, err := net.ParseCIDR(host); err == nil {
- p.AddNetwork(net)
- }
- continue
- }
- if ip := net.ParseIP(host); ip != nil {
- p.AddIP(ip)
- continue
- }
- if strings.HasPrefix(host, "*.") {
- p.AddZone(host[1:])
- continue
- }
- p.AddHost(host)
- }
-}
-
-// AddIP specifies an IP address that will use the bypass proxy. Note that
-// this will only take effect if a literal IP address is dialed. A connection
-// to a named host will never match an IP.
-func (p *PerHost) AddIP(ip net.IP) {
- p.bypassIPs = append(p.bypassIPs, ip)
-}
-
-// AddNetwork specifies an IP range that will use the bypass proxy. Note that
-// this will only take effect if a literal IP address is dialed. A connection
-// to a named host will never match.
-func (p *PerHost) AddNetwork(net *net.IPNet) {
- p.bypassNetworks = append(p.bypassNetworks, net)
-}
-
-// AddZone specifies a DNS suffix that will use the bypass proxy. A zone of
-// "example.com" matches "example.com" and all of its subdomains.
-func (p *PerHost) AddZone(zone string) {
- if strings.HasSuffix(zone, ".") {
- zone = zone[:len(zone)-1]
- }
- if !strings.HasPrefix(zone, ".") {
- zone = "." + zone
- }
- p.bypassZones = append(p.bypassZones, zone)
-}
-
-// AddHost specifies a host name that will use the bypass proxy.
-func (p *PerHost) AddHost(host string) {
- if strings.HasSuffix(host, ".") {
- host = host[:len(host)-1]
- }
- p.bypassHosts = append(p.bypassHosts, host)
-}
diff --git a/vendor/golang.org/x/net/proxy/proxy.go b/vendor/golang.org/x/net/proxy/proxy.go
deleted file mode 100644
index 9ff4b9a77..000000000
--- a/vendor/golang.org/x/net/proxy/proxy.go
+++ /dev/null
@@ -1,149 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package proxy provides support for a variety of protocols to proxy network
-// data.
-package proxy // import "golang.org/x/net/proxy"
-
-import (
- "errors"
- "net"
- "net/url"
- "os"
- "sync"
-)
-
-// A Dialer is a means to establish a connection.
-// Custom dialers should also implement ContextDialer.
-type Dialer interface {
- // Dial connects to the given address via the proxy.
- Dial(network, addr string) (c net.Conn, err error)
-}
-
-// Auth contains authentication parameters that specific Dialers may require.
-type Auth struct {
- User, Password string
-}
-
-// FromEnvironment returns the dialer specified by the proxy-related
-// variables in the environment and makes underlying connections
-// directly.
-func FromEnvironment() Dialer {
- return FromEnvironmentUsing(Direct)
-}
-
-// FromEnvironmentUsing returns the dialer specify by the proxy-related
-// variables in the environment and makes underlying connections
-// using the provided forwarding Dialer (for instance, a *net.Dialer
-// with desired configuration).
-func FromEnvironmentUsing(forward Dialer) Dialer {
- allProxy := allProxyEnv.Get()
- if len(allProxy) == 0 {
- return forward
- }
-
- proxyURL, err := url.Parse(allProxy)
- if err != nil {
- return forward
- }
- proxy, err := FromURL(proxyURL, forward)
- if err != nil {
- return forward
- }
-
- noProxy := noProxyEnv.Get()
- if len(noProxy) == 0 {
- return proxy
- }
-
- perHost := NewPerHost(proxy, forward)
- perHost.AddFromString(noProxy)
- return perHost
-}
-
-// proxySchemes is a map from URL schemes to a function that creates a Dialer
-// from a URL with such a scheme.
-var proxySchemes map[string]func(*url.URL, Dialer) (Dialer, error)
-
-// RegisterDialerType takes a URL scheme and a function to generate Dialers from
-// a URL with that scheme and a forwarding Dialer. Registered schemes are used
-// by FromURL.
-func RegisterDialerType(scheme string, f func(*url.URL, Dialer) (Dialer, error)) {
- if proxySchemes == nil {
- proxySchemes = make(map[string]func(*url.URL, Dialer) (Dialer, error))
- }
- proxySchemes[scheme] = f
-}
-
-// FromURL returns a Dialer given a URL specification and an underlying
-// Dialer for it to make network requests.
-func FromURL(u *url.URL, forward Dialer) (Dialer, error) {
- var auth *Auth
- if u.User != nil {
- auth = new(Auth)
- auth.User = u.User.Username()
- if p, ok := u.User.Password(); ok {
- auth.Password = p
- }
- }
-
- switch u.Scheme {
- case "socks5", "socks5h":
- addr := u.Hostname()
- port := u.Port()
- if port == "" {
- port = "1080"
- }
- return SOCKS5("tcp", net.JoinHostPort(addr, port), auth, forward)
- }
-
- // If the scheme doesn't match any of the built-in schemes, see if it
- // was registered by another package.
- if proxySchemes != nil {
- if f, ok := proxySchemes[u.Scheme]; ok {
- return f(u, forward)
- }
- }
-
- return nil, errors.New("proxy: unknown scheme: " + u.Scheme)
-}
-
-var (
- allProxyEnv = &envOnce{
- names: []string{"ALL_PROXY", "all_proxy"},
- }
- noProxyEnv = &envOnce{
- names: []string{"NO_PROXY", "no_proxy"},
- }
-)
-
-// envOnce looks up an environment variable (optionally by multiple
-// names) once. It mitigates expensive lookups on some platforms
-// (e.g. Windows).
-// (Borrowed from net/http/transport.go)
-type envOnce struct {
- names []string
- once sync.Once
- val string
-}
-
-func (e *envOnce) Get() string {
- e.once.Do(e.init)
- return e.val
-}
-
-func (e *envOnce) init() {
- for _, n := range e.names {
- e.val = os.Getenv(n)
- if e.val != "" {
- return
- }
- }
-}
-
-// reset is used by tests
-func (e *envOnce) reset() {
- e.once = sync.Once{}
- e.val = ""
-}
diff --git a/vendor/golang.org/x/net/proxy/socks5.go b/vendor/golang.org/x/net/proxy/socks5.go
deleted file mode 100644
index c91651f96..000000000
--- a/vendor/golang.org/x/net/proxy/socks5.go
+++ /dev/null
@@ -1,42 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package proxy
-
-import (
- "context"
- "net"
-
- "golang.org/x/net/internal/socks"
-)
-
-// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given
-// address with an optional username and password.
-// See RFC 1928 and RFC 1929.
-func SOCKS5(network, address string, auth *Auth, forward Dialer) (Dialer, error) {
- d := socks.NewDialer(network, address)
- if forward != nil {
- if f, ok := forward.(ContextDialer); ok {
- d.ProxyDial = func(ctx context.Context, network string, address string) (net.Conn, error) {
- return f.DialContext(ctx, network, address)
- }
- } else {
- d.ProxyDial = func(ctx context.Context, network string, address string) (net.Conn, error) {
- return dialContext(ctx, forward, network, address)
- }
- }
- }
- if auth != nil {
- up := socks.UsernamePassword{
- Username: auth.User,
- Password: auth.Password,
- }
- d.AuthMethods = []socks.AuthMethod{
- socks.AuthMethodNotRequired,
- socks.AuthMethodUsernamePassword,
- }
- d.Authenticate = up.Authenticate
- }
- return d, nil
-}