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//go:build !race
// +build !race
/*
*
* 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 transport
import (
"bufio"
"context"
"encoding/base64"
"fmt"
"io"
"net"
"net/http"
"net/url"
"testing"
"time"
)
const (
envTestAddr = "1.2.3.4:8080"
envProxyAddr = "2.3.4.5:7687"
)
// overwriteAndRestore overwrite function httpProxyFromEnvironment and
// returns a function to restore the default values.
func overwrite(hpfe func(req *http.Request) (*url.URL, error)) func() {
backHPFE := httpProxyFromEnvironment
httpProxyFromEnvironment = hpfe
return func() {
httpProxyFromEnvironment = backHPFE
}
}
type proxyServer struct {
t *testing.T
lis net.Listener
in net.Conn
out net.Conn
requestCheck func(*http.Request) error
}
func (p *proxyServer) run() {
in, err := p.lis.Accept()
if err != nil {
return
}
p.in = in
req, err := http.ReadRequest(bufio.NewReader(in))
if err != nil {
p.t.Errorf("failed to read CONNECT req: %v", err)
return
}
if err := p.requestCheck(req); err != nil {
resp := http.Response{StatusCode: http.StatusMethodNotAllowed}
resp.Write(p.in)
p.in.Close()
p.t.Errorf("get wrong CONNECT req: %+v, error: %v", req, err)
return
}
out, err := net.Dial("tcp", req.URL.Host)
if err != nil {
p.t.Errorf("failed to dial to server: %v", err)
return
}
resp := http.Response{StatusCode: http.StatusOK, Proto: "HTTP/1.0"}
resp.Write(p.in)
p.out = out
go io.Copy(p.in, p.out)
go io.Copy(p.out, p.in)
}
func (p *proxyServer) stop() {
p.lis.Close()
if p.in != nil {
p.in.Close()
}
if p.out != nil {
p.out.Close()
}
}
func testHTTPConnect(t *testing.T, proxyURLModify func(*url.URL) *url.URL, proxyReqCheck func(*http.Request) error) {
plis, err := net.Listen("tcp", "localhost:0")
if err != nil {
t.Fatalf("failed to listen: %v", err)
}
p := &proxyServer{
t: t,
lis: plis,
requestCheck: proxyReqCheck,
}
go p.run()
defer p.stop()
blis, err := net.Listen("tcp", "localhost:0")
if err != nil {
t.Fatalf("failed to listen: %v", err)
}
msg := []byte{4, 3, 5, 2}
recvBuf := make([]byte, len(msg))
done := make(chan error, 1)
go func() {
in, err := blis.Accept()
if err != nil {
done <- err
return
}
defer in.Close()
in.Read(recvBuf)
done <- nil
}()
// Overwrite the function in the test and restore them in defer.
hpfe := func(req *http.Request) (*url.URL, error) {
return proxyURLModify(&url.URL{Host: plis.Addr().String()}), nil
}
defer overwrite(hpfe)()
// Dial to proxy server.
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
c, err := proxyDial(ctx, blis.Addr().String(), "test")
if err != nil {
t.Fatalf("http connect Dial failed: %v", err)
}
defer c.Close()
// Send msg on the connection.
c.Write(msg)
if err := <-done; err != nil {
t.Fatalf("failed to accept: %v", err)
}
// Check received msg.
if string(recvBuf) != string(msg) {
t.Fatalf("received msg: %v, want %v", recvBuf, msg)
}
}
func (s) TestHTTPConnect(t *testing.T) {
testHTTPConnect(t,
func(in *url.URL) *url.URL {
return in
},
func(req *http.Request) error {
if req.Method != http.MethodConnect {
return fmt.Errorf("unexpected Method %q, want %q", req.Method, http.MethodConnect)
}
return nil
},
)
}
func (s) TestHTTPConnectBasicAuth(t *testing.T) {
const (
user = "notAUser"
password = "notAPassword"
)
testHTTPConnect(t,
func(in *url.URL) *url.URL {
in.User = url.UserPassword(user, password)
return in
},
func(req *http.Request) error {
if req.Method != http.MethodConnect {
return fmt.Errorf("unexpected Method %q, want %q", req.Method, http.MethodConnect)
}
wantProxyAuthStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(user+":"+password))
if got := req.Header.Get(proxyAuthHeaderKey); got != wantProxyAuthStr {
gotDecoded, _ := base64.StdEncoding.DecodeString(got)
wantDecoded, _ := base64.StdEncoding.DecodeString(wantProxyAuthStr)
return fmt.Errorf("unexpected auth %q (%q), want %q (%q)", got, gotDecoded, wantProxyAuthStr, wantDecoded)
}
return nil
},
)
}
func (s) TestMapAddressEnv(t *testing.T) {
// Overwrite the function in the test and restore them in defer.
hpfe := func(req *http.Request) (*url.URL, error) {
if req.URL.Host == envTestAddr {
return &url.URL{
Scheme: "https",
Host: envProxyAddr,
}, nil
}
return nil, nil
}
defer overwrite(hpfe)()
// envTestAddr should be handled by ProxyFromEnvironment.
got, err := mapAddress(envTestAddr)
if err != nil {
t.Error(err)
}
if got.Host != envProxyAddr {
t.Errorf("want %v, got %v", envProxyAddr, got)
}
}
|
