[chore] Update gorilla/websocket (#3561)

The maintainers messed with the v1.5.2 tag which causes Go checksum
validation problems as the Go module proxy saw and recorded the original
hash.

This updates to 1.5.3 which doesn't have the issue.

go.mod

@@ -52,7 +52,7 @@ require (
 	github.com/google/go-cmp v0.6.0
 	github.com/google/uuid v1.6.0
 	github.com/gorilla/feeds v1.2.0
-	github.com/gorilla/websocket v1.5.2
+	github.com/gorilla/websocket v1.5.3
 	github.com/jackc/pgx/v5 v5.7.1
 	github.com/k3a/html2text v1.2.1
 	github.com/microcosm-cc/bluemonday v1.0.27

go.sum

@@ -332,6 +332,8 @@ github.com/gorilla/sessions v1.2.2/go.mod h1:ePLdVu+jbEgHH+KWw8I1z2wqd0BAdAQh/8L
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/gorilla/websocket v1.5.2 h1:qoW6V1GT3aZxybsbC6oLnailWnB+qTMVwMreOso9XUw=
 github.com/gorilla/websocket v1.5.2/go.mod h1:0n9H61RBAcf5/38py2MCYbxzPIY9rOkpvvMT24Rqs30=
+github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
+github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.22.0 h1:asbCHRVmodnJTuQ3qamDwqVOIjwqUPTYmYuemVOx+Ys=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.22.0/go.mod h1:ggCgvZ2r7uOoQjOyu2Y1NhHmEPPzzuhWgcza5M1Ji1I=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=

vendor/github.com/gorilla/websocket/.editorconfig

@@ -1,20 +0,0 @@
-; https://editorconfig.org/
-
-root = true
-
-[*]
-insert_final_newline = true
-charset = utf-8
-trim_trailing_whitespace = true
-indent_style = space
-indent_size = 2
-
-[{Makefile,go.mod,go.sum,*.go,.gitmodules}]
-indent_style = tab
-indent_size = 4
-
-[*.md]
-indent_size = 4
-trim_trailing_whitespace = false
-
-eclint_indent_style = unset

vendor/github.com/gorilla/websocket/.gitignore

@@ -1 +1,25 @@
-coverage.coverprofile
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+
+.idea/
+*.iml

vendor/github.com/gorilla/websocket/.golangci.yml

@@ -1,13 +0,0 @@
-run:
-  timeout: "5m"
-  # will not run golangci-lint against *_test.go
-  tests: false
-issues:
-  exclude-dirs:
-    - examples/*.go
-  exclude-rules:
-  # excluding error checks from all the .go files
-    - path: ./*.go
-      linters:
-        - errcheck
-

vendor/github.com/gorilla/websocket/AUTHORS

@@ -0,0 +1,9 @@
+# This is the official list of Gorilla WebSocket authors for copyright
+# purposes.
+#
+# Please keep the list sorted.
+
+Gary Burd <gary@beagledreams.com>
+Google LLC (https://opensource.google.com/)
+Joachim Bauch <mail@joachim-bauch.de>
+

vendor/github.com/gorilla/websocket/LICENSE

@@ -1,27 +1,22 @@
-Copyright (c) 2023 The Gorilla Authors. All rights reserved.
+Copyright (c) 2013 The Gorilla WebSocket Authors. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
+modification, are permitted provided that the following conditions are met:
-met:
 
-	 * Redistributions of source code must retain the above copyright
+  Redistributions of source code must retain the above copyright notice, this
-notice, this list of conditions and the following disclaimer.
+  list of conditions and the following disclaimer.
-	 * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-	 * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  Redistributions in binary form must reproduce the above copyright notice,
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  this list of conditions and the following disclaimer in the documentation
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  and/or other materials provided with the distribution.
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/gorilla/websocket/Makefile

@@ -1,34 +0,0 @@
-GO_LINT=$(shell which golangci-lint 2> /dev/null || echo '')
-GO_LINT_URI=github.com/golangci/golangci-lint/cmd/golangci-lint@latest
-
-GO_SEC=$(shell which gosec 2> /dev/null || echo '')
-GO_SEC_URI=github.com/securego/gosec/v2/cmd/gosec@latest
-
-GO_VULNCHECK=$(shell which govulncheck 2> /dev/null || echo '')
-GO_VULNCHECK_URI=golang.org/x/vuln/cmd/govulncheck@latest
-
-.PHONY: golangci-lint
-golangci-lint:
-	$(if $(GO_LINT), ,go install $(GO_LINT_URI))
-	@echo "##### Running golangci-lint"
-	golangci-lint run -v
-
-.PHONY: gosec
-gosec:
-	$(if $(GO_SEC), ,go install $(GO_SEC_URI))
-	@echo "##### Running gosec"
-	gosec -exclude-dir examples ./...
-
-.PHONY: govulncheck
-govulncheck:
-	$(if $(GO_VULNCHECK), ,go install $(GO_VULNCHECK_URI))
-	@echo "##### Running govulncheck"
-	govulncheck ./...
-
-.PHONY: verify
-verify: golangci-lint gosec govulncheck
-
-.PHONY: test
-test:
-	@echo "##### Running tests"
-	go test -race -cover -coverprofile=coverage.coverprofile -covermode=atomic -v ./...

vendor/github.com/gorilla/websocket/README.md

@@ -1,23 +1,19 @@
-# gorilla/websocket
+# Gorilla WebSocket
 
-![testing](https://github.com/gorilla/websocket/actions/workflows/test.yml/badge.svg)
+[![GoDoc](https://godoc.org/github.com/gorilla/websocket?status.svg)](https://godoc.org/github.com/gorilla/websocket)
-[![codecov](https://codecov.io/github/gorilla/websocket/branch/main/graph/badge.svg)](https://codecov.io/github/gorilla/websocket)
+[![CircleCI](https://circleci.com/gh/gorilla/websocket.svg?style=svg)](https://circleci.com/gh/gorilla/websocket)
-[![godoc](https://godoc.org/github.com/gorilla/websocket?status.svg)](https://godoc.org/github.com/gorilla/websocket)
-[![sourcegraph](https://sourcegraph.com/github.com/gorilla/websocket/-/badge.svg)](https://sourcegraph.com/github.com/gorilla/websocket?badge)
 
-Gorilla WebSocket is a [Go](http://golang.org/) implementation of the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
+Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
-
+[WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
-![Gorilla Logo](https://github.com/gorilla/.github/assets/53367916/d92caabf-98e0-473e-bfbf-ab554ba435e5)
 
 
 ### Documentation
 
 * [API Reference](https://pkg.go.dev/github.com/gorilla/websocket?tab=doc)
-* [Chat example](https://github.com/gorilla/websocket/tree/main/examples/chat)
+* [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
-* [Command example](https://github.com/gorilla/websocket/tree/main/examples/command)
+* [Command example](https://github.com/gorilla/websocket/tree/master/examples/command)
-* [Client and server example](https://github.com/gorilla/websocket/tree/main/examples/echo)
+* [Client and server example](https://github.com/gorilla/websocket/tree/master/examples/echo)
-* [File watch example](https://github.com/gorilla/websocket/tree/main/examples/filewatch)
+* [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch)
-* [Write buffer pool example](https://github.com/gorilla/websocket/tree/main/examples/bufferpool)
 
 ### Status
 
@@ -33,4 +29,5 @@ package API is stable.
 
 The Gorilla WebSocket package passes the server tests in the [Autobahn Test
 Suite](https://github.com/crossbario/autobahn-testsuite) using the application in the [examples/autobahn
-subdirectory](https://github.com/gorilla/websocket/tree/main/examples/autobahn).
+subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
+

vendor/github.com/gorilla/websocket/client.go

@@ -11,14 +11,13 @@
 	"errors"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/httptrace"
 	"net/url"
 	"strings"
 	"time"
-
-	"golang.org/x/net/proxy"
 )
 
 // ErrBadHandshake is returned when the server response to opening handshake is
@@ -305,7 +304,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 			return nil, nil, err
 		}
 		if proxyURL != nil {
-			dialer, err := proxy.FromURL(proxyURL, netDialerFunc(netDial))
+			dialer, err := proxy_FromURL(proxyURL, netDialerFunc(netDial))
 			if err != nil {
 				return nil, nil, err
 			}
@@ -392,7 +391,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 		}
 	}
 
-	if resp.StatusCode != http.StatusSwitchingProtocols ||
+	if resp.StatusCode != 101 ||
 		!tokenListContainsValue(resp.Header, "Upgrade", "websocket") ||
 		!tokenListContainsValue(resp.Header, "Connection", "upgrade") ||
 		resp.Header.Get("Sec-Websocket-Accept") != computeAcceptKey(challengeKey) {
@@ -401,7 +400,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 		// debugging.
 		buf := make([]byte, 1024)
 		n, _ := io.ReadFull(resp.Body, buf)
-		resp.Body = io.NopCloser(bytes.NewReader(buf[:n]))
+		resp.Body = ioutil.NopCloser(bytes.NewReader(buf[:n]))
 		return nil, resp, ErrBadHandshake
 	}
 
@@ -419,7 +418,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 		break
 	}
 
-	resp.Body = io.NopCloser(bytes.NewReader([]byte{}))
+	resp.Body = ioutil.NopCloser(bytes.NewReader([]byte{}))
 	conn.subprotocol = resp.Header.Get("Sec-Websocket-Protocol")
 
 	netConn.SetDeadline(time.Time{})
@@ -429,7 +428,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 
 func cloneTLSConfig(cfg *tls.Config) *tls.Config {
 	if cfg == nil {
-		return &tls.Config{MinVersion: tls.VersionTLS12}
+		return &tls.Config{}
 	}
 	return cfg.Clone()
 }

vendor/github.com/gorilla/websocket/conn.go

@@ -6,10 +6,11 @@
 
 import (
 	"bufio"
-	"crypto/rand"
 	"encoding/binary"
 	"errors"
 	"io"
+	"io/ioutil"
+	"math/rand"
 	"net"
 	"strconv"
 	"strings"
@@ -180,16 +181,16 @@ func IsUnexpectedCloseError(err error, expectedCodes ...int) bool {
 	errInvalidControlFrame = errors.New("websocket: invalid control frame")
 )
 
-// maskRand is an io.Reader for generating mask bytes. The reader is initialized
-// to crypto/rand Reader. Tests swap the reader to a math/rand reader for
-// reproducible results.
-var maskRand = rand.Reader
-
-// newMaskKey returns a new 32 bit value for masking client frames.
 func newMaskKey() [4]byte {
-	var k [4]byte
+	n := rand.Uint32()
-	_, _ = io.ReadFull(maskRand, k[:])
+	return [4]byte{byte(n), byte(n >> 8), byte(n >> 16), byte(n >> 24)}
-	return k
+}
+
+func hideTempErr(err error) error {
+	if e, ok := err.(net.Error); ok && e.Temporary() {
+		err = &netError{msg: e.Error(), timeout: e.Timeout()}
+	}
+	return err
 }
 
 func isControl(frameType int) bool {
@@ -357,6 +358,7 @@ func (c *Conn) RemoteAddr() net.Addr {
 // Write methods
 
 func (c *Conn) writeFatal(err error) error {
+	err = hideTempErr(err)
 	c.writeErrMu.Lock()
 	if c.writeErr == nil {
 		c.writeErr = err
@@ -434,17 +436,14 @@ func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) er
 		maskBytes(key, 0, buf[6:])
 	}
 
-	if deadline.IsZero() {
+	d := 1000 * time.Hour
-		// No timeout for zero time.
+	if !deadline.IsZero() {
-		<-c.mu
+		d = deadline.Sub(time.Now())
-	} else {
-		d := time.Until(deadline)
 		if d < 0 {
 			return errWriteTimeout
 		}
-		select {
+	}
-		case <-c.mu:
+
-		default:
 	timer := time.NewTimer(d)
 	select {
 	case <-c.mu:
@@ -452,9 +451,6 @@ func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) er
 	case <-timer.C:
 		return errWriteTimeout
 	}
-		}
-	}
-
 	defer func() { c.mu <- struct{}{} }()
 
 	c.writeErrMu.Lock()
@@ -799,7 +795,7 @@ func (c *Conn) advanceFrame() (int, error) {
 	// 1. Skip remainder of previous frame.
 
 	if c.readRemaining > 0 {
-		if _, err := io.CopyN(io.Discard, c.br, c.readRemaining); err != nil {
+		if _, err := io.CopyN(ioutil.Discard, c.br, c.readRemaining); err != nil {
 			return noFrame, err
 		}
 	}
@@ -1012,7 +1008,7 @@ func (c *Conn) NextReader() (messageType int, r io.Reader, err error) {
 	for c.readErr == nil {
 		frameType, err := c.advanceFrame()
 		if err != nil {
-			c.readErr = err
+			c.readErr = hideTempErr(err)
 			break
 		}
 
@@ -1052,7 +1048,7 @@ func (r *messageReader) Read(b []byte) (int, error) {
 				b = b[:c.readRemaining]
 			}
 			n, err := c.br.Read(b)
-			c.readErr = err
+			c.readErr = hideTempErr(err)
 			if c.isServer {
 				c.readMaskPos = maskBytes(c.readMaskKey, c.readMaskPos, b[:n])
 			}
@@ -1073,7 +1069,7 @@ func (r *messageReader) Read(b []byte) (int, error) {
 		frameType, err := c.advanceFrame()
 		switch {
 		case err != nil:
-			c.readErr = err
+			c.readErr = hideTempErr(err)
 		case frameType == TextMessage || frameType == BinaryMessage:
 			c.readErr = errors.New("websocket: internal error, unexpected text or binary in Reader")
 		}
@@ -1098,7 +1094,7 @@ func (c *Conn) ReadMessage() (messageType int, p []byte, err error) {
 	if err != nil {
 		return messageType, nil, err
 	}
-	p, err = io.ReadAll(r)
+	p, err = ioutil.ReadAll(r)
 	return messageType, p, err
 }
 
@@ -1165,7 +1161,7 @@ func (c *Conn) SetPingHandler(h func(appData string) error) {
 			err := c.WriteControl(PongMessage, []byte(message), time.Now().Add(writeWait))
 			if err == ErrCloseSent {
 				return nil
-			} else if _, ok := err.(net.Error); ok {
+			} else if e, ok := err.(net.Error); ok && e.Temporary() {
 				return nil
 			}
 			return err
@@ -1240,15 +1236,3 @@ func FormatCloseMessage(closeCode int, text string) []byte {
 	copy(buf[2:], text)
 	return buf
 }
-
-var messageTypes = map[int]string{
-	TextMessage:   "TextMessage",
-	BinaryMessage: "BinaryMessage",
-	CloseMessage:  "CloseMessage",
-	PingMessage:   "PingMessage",
-	PongMessage:   "PongMessage",
-}
-
-func FormatMessageType(mt int) string {
-	return messageTypes[mt]
-}

vendor/github.com/gorilla/websocket/proxy.go

@@ -12,8 +12,6 @@
 	"net/http"
 	"net/url"
 	"strings"
-
-	"golang.org/x/net/proxy"
 )
 
 type netDialerFunc func(network, addr string) (net.Conn, error)
@@ -23,7 +21,7 @@ func (fn netDialerFunc) Dial(network, addr string) (net.Conn, error) {
 }
 
 func init() {
-	proxy.RegisterDialerType("http", func(proxyURL *url.URL, forwardDialer proxy.Dialer) (proxy.Dialer, error) {
+	proxy_RegisterDialerType("http", func(proxyURL *url.URL, forwardDialer proxy_Dialer) (proxy_Dialer, error) {
 		return &httpProxyDialer{proxyURL: proxyURL, forwardDial: forwardDialer.Dial}, nil
 	})
 }
@@ -70,7 +68,7 @@ func (hpd *httpProxyDialer) Dial(network string, addr string) (net.Conn, error)
 		return nil, err
 	}
 
-	if resp.StatusCode != http.StatusOK {
+	if resp.StatusCode != 200 {
 		conn.Close()
 		f := strings.SplitN(resp.Status, " ", 2)
 		return nil, errors.New(f[1])

vendor/github.com/gorilla/websocket/server.go

@@ -33,7 +33,6 @@ type Upgrader struct {
 	// size is zero, then buffers allocated by the HTTP server are used. The
 	// I/O buffer sizes do not limit the size of the messages that can be sent
 	// or received.
-	// The default value is 4096 bytes, 4kb.
 	ReadBufferSize, WriteBufferSize int
 
 	// WriteBufferPool is a pool of buffers for write operations. If the value
@@ -102,8 +101,8 @@ func checkSameOrigin(r *http.Request) bool {
 func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
 	if u.Subprotocols != nil {
 		clientProtocols := Subprotocols(r)
-		for _, clientProtocol := range clientProtocols {
 		for _, serverProtocol := range u.Subprotocols {
+			for _, clientProtocol := range clientProtocols {
 				if clientProtocol == serverProtocol {
 					return clientProtocol
 				}
@@ -173,7 +172,12 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
 		}
 	}
 
-	netConn, brw, err := http.NewResponseController(w).Hijack()
+	h, ok := w.(http.Hijacker)
+	if !ok {
+		return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
+	}
+	var brw *bufio.ReadWriter
+	netConn, brw, err := h.Hijack()
 	if err != nil {
 		return u.returnError(w, r, http.StatusInternalServerError, err.Error())
 	}

vendor/github.com/gorilla/websocket/tls_handshake.go

@@ -1,3 +1,6 @@
+//go:build go1.17
+// +build go1.17
+
 package websocket
 
 import (

vendor/golang.org/x/net/internal/socks/client.go

@@ -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
-}

vendor/golang.org/x/net/internal/socks/socks.go

@@ -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) > 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)))
-}

vendor/golang.org/x/net/proxy/dial.go

@@ -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
-}

vendor/golang.org/x/net/proxy/direct.go

@@ -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)
-}

vendor/golang.org/x/net/proxy/per_host.go

@@ -1,151 +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) {
-	zone = strings.TrimSuffix(zone, ".")
-	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) {
-	host = strings.TrimSuffix(host, ".")
-	p.bypassHosts = append(p.bypassHosts, host)
-}

vendor/golang.org/x/net/proxy/proxy.go

@@ -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 = ""
-}

vendor/golang.org/x/net/proxy/socks5.go

@@ -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
-}

vendor/modules.txt

@@ -364,8 +364,8 @@ github.com/gorilla/securecookie
 # github.com/gorilla/sessions v1.2.2
 ## explicit; go 1.20
 github.com/gorilla/sessions
-# github.com/gorilla/websocket v1.5.2
+# github.com/gorilla/websocket v1.5.3
-## explicit; go 1.20
+## explicit; go 1.12
 github.com/gorilla/websocket
 # github.com/grpc-ecosystem/grpc-gateway/v2 v2.22.0
 ## explicit; go 1.21
@@ -1109,11 +1109,9 @@ golang.org/x/net/http2/hpack
 golang.org/x/net/idna
 golang.org/x/net/internal/iana
 golang.org/x/net/internal/socket
-golang.org/x/net/internal/socks
 golang.org/x/net/internal/timeseries
 golang.org/x/net/ipv4
 golang.org/x/net/ipv6
-golang.org/x/net/proxy
 golang.org/x/net/publicsuffix
 golang.org/x/net/trace
 # golang.org/x/oauth2 v0.24.0