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Diffstat (limited to 'vendor/google.golang.org/grpc/proxy.go')
-rw-r--r--vendor/google.golang.org/grpc/proxy.go130
1 files changed, 0 insertions, 130 deletions
diff --git a/vendor/google.golang.org/grpc/proxy.go b/vendor/google.golang.org/grpc/proxy.go
deleted file mode 100644
index 2d40236..0000000
--- a/vendor/google.golang.org/grpc/proxy.go
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * 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 grpc
-
-import (
- "bufio"
- "errors"
- "fmt"
- "io"
- "net"
- "net/http"
- "net/http/httputil"
- "net/url"
-
- "golang.org/x/net/context"
-)
-
-var (
- // errDisabled indicates that proxy is disabled for the address.
- errDisabled = errors.New("proxy is disabled for the address")
- // The following variable will be overwritten in the tests.
- httpProxyFromEnvironment = http.ProxyFromEnvironment
-)
-
-func mapAddress(ctx context.Context, address string) (string, error) {
- req := &http.Request{
- URL: &url.URL{
- Scheme: "https",
- Host: address,
- },
- }
- url, err := httpProxyFromEnvironment(req)
- if err != nil {
- return "", err
- }
- if url == nil {
- return "", errDisabled
- }
- return url.Host, nil
-}
-
-// To read a response from a net.Conn, http.ReadResponse() takes a bufio.Reader.
-// It's possible that this reader reads more than what's need for the response and stores
-// those bytes in the buffer.
-// bufConn wraps the original net.Conn and the bufio.Reader to make sure we don't lose the
-// bytes in the buffer.
-type bufConn struct {
- net.Conn
- r io.Reader
-}
-
-func (c *bufConn) Read(b []byte) (int, error) {
- return c.r.Read(b)
-}
-
-func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, addr string) (_ net.Conn, err error) {
- defer func() {
- if err != nil {
- conn.Close()
- }
- }()
-
- req := (&http.Request{
- Method: http.MethodConnect,
- URL: &url.URL{Host: addr},
- Header: map[string][]string{"User-Agent": {grpcUA}},
- })
-
- if err := sendHTTPRequest(ctx, req, conn); err != nil {
- return nil, fmt.Errorf("failed to write the HTTP request: %v", err)
- }
-
- r := bufio.NewReader(conn)
- resp, err := http.ReadResponse(r, req)
- if err != nil {
- return nil, fmt.Errorf("reading server HTTP response: %v", err)
- }
- defer resp.Body.Close()
- if resp.StatusCode != http.StatusOK {
- dump, err := httputil.DumpResponse(resp, true)
- if err != nil {
- return nil, fmt.Errorf("failed to do connect handshake, status code: %s", resp.Status)
- }
- return nil, fmt.Errorf("failed to do connect handshake, response: %q", dump)
- }
-
- return &bufConn{Conn: conn, r: r}, nil
-}
-
-// newProxyDialer returns a dialer that connects to proxy first if necessary.
-// The returned dialer checks if a proxy is necessary, dial to the proxy with the
-// provided dialer, does HTTP CONNECT handshake and returns the connection.
-func newProxyDialer(dialer func(context.Context, string) (net.Conn, error)) func(context.Context, string) (net.Conn, error) {
- return func(ctx context.Context, addr string) (conn net.Conn, err error) {
- var skipHandshake bool
- newAddr, err := mapAddress(ctx, addr)
- if err != nil {
- if err != errDisabled {
- return nil, err
- }
- skipHandshake = true
- newAddr = addr
- }
-
- conn, err = dialer(ctx, newAddr)
- if err != nil {
- return
- }
- if !skipHandshake {
- conn, err = doHTTPConnectHandshake(ctx, conn, addr)
- }
- return
- }
-}