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http: fix, use WriteProxy
Fixes #53. R=bradfitzgo, bradfitzwork CC=golang-dev https://golang.org/cl/4240075
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@ -190,6 +190,8 @@ func (req *Request) Write(w io.Writer) os.Error {
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// WriteProxy is like Write but writes the request in the form
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// expected by an HTTP proxy. It includes the scheme and host
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// name in the URI instead of using a separate Host: header line.
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// If req.RawURL is non-empty, WriteProxy uses it unchanged
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// instead of URL but still omits the Host: header.
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func (req *Request) WriteProxy(w io.Writer) os.Error {
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return req.write(w, true)
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}
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@ -206,13 +208,12 @@ func (req *Request) write(w io.Writer, usingProxy bool) os.Error {
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if req.URL.RawQuery != "" {
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uri += "?" + req.URL.RawQuery
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}
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}
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if usingProxy {
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if uri == "" || uri[0] != '/' {
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uri = "/" + uri
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if usingProxy {
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if uri == "" || uri[0] != '/' {
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uri = "/" + uri
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}
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uri = req.URL.Scheme + "://" + host + uri
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}
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uri = req.URL.Scheme + "://" + host + uri
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}
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fmt.Fprintf(w, "%s %s HTTP/1.1\r\n", valueOrDefault(req.Method, "GET"), uri)
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@ -10,8 +10,10 @@ import (
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)
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type reqWriteTest struct {
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Req Request
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Raw string
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Req Request
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Body []byte
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Raw string
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RawProxy string
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}
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var reqWriteTests = []reqWriteTest{
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@ -50,6 +52,8 @@ var reqWriteTests = []reqWriteTest{
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Form: map[string][]string{},
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},
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nil,
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"GET http://www.techcrunch.com/ HTTP/1.1\r\n" +
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"Host: www.techcrunch.com\r\n" +
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"User-Agent: Fake\r\n" +
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@ -59,6 +63,15 @@ var reqWriteTests = []reqWriteTest{
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"Accept-Language: en-us,en;q=0.5\r\n" +
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"Keep-Alive: 300\r\n" +
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"Proxy-Connection: keep-alive\r\n\r\n",
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"GET http://www.techcrunch.com/ HTTP/1.1\r\n" +
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"User-Agent: Fake\r\n" +
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"Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n" +
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"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n" +
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"Accept-Encoding: gzip,deflate\r\n" +
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"Accept-Language: en-us,en;q=0.5\r\n" +
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"Keep-Alive: 300\r\n" +
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"Proxy-Connection: keep-alive\r\n\r\n",
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},
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// HTTP/1.1 => chunked coding; body; empty trailer
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{
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@ -72,15 +85,21 @@ var reqWriteTests = []reqWriteTest{
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ProtoMajor: 1,
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ProtoMinor: 1,
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Header: map[string][]string{},
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Body: nopCloser{bytes.NewBufferString("abcdef")},
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TransferEncoding: []string{"chunked"},
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},
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[]byte("abcdef"),
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"GET /search HTTP/1.1\r\n" +
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"Host: www.google.com\r\n" +
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"User-Agent: Go http package\r\n" +
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"Transfer-Encoding: chunked\r\n\r\n" +
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"6\r\nabcdef\r\n0\r\n\r\n",
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"GET http://www.google.com/search HTTP/1.1\r\n" +
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"User-Agent: Go http package\r\n" +
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"Transfer-Encoding: chunked\r\n\r\n" +
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"6\r\nabcdef\r\n0\r\n\r\n",
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},
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// HTTP/1.1 POST => chunked coding; body; empty trailer
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{
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@ -95,16 +114,23 @@ var reqWriteTests = []reqWriteTest{
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ProtoMinor: 1,
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Header: map[string][]string{},
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Close: true,
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Body: nopCloser{bytes.NewBufferString("abcdef")},
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TransferEncoding: []string{"chunked"},
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},
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[]byte("abcdef"),
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"POST /search HTTP/1.1\r\n" +
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"Host: www.google.com\r\n" +
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"User-Agent: Go http package\r\n" +
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"Connection: close\r\n" +
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"Transfer-Encoding: chunked\r\n\r\n" +
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"6\r\nabcdef\r\n0\r\n\r\n",
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"POST http://www.google.com/search HTTP/1.1\r\n" +
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"User-Agent: Go http package\r\n" +
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"Connection: close\r\n" +
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"Transfer-Encoding: chunked\r\n\r\n" +
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"6\r\nabcdef\r\n0\r\n\r\n",
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},
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// default to HTTP/1.1
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{
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@ -114,16 +140,26 @@ var reqWriteTests = []reqWriteTest{
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Host: "www.google.com",
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},
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nil,
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"GET /search HTTP/1.1\r\n" +
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"Host: www.google.com\r\n" +
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"User-Agent: Go http package\r\n" +
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"\r\n",
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// Looks weird but RawURL overrides what WriteProxy would choose.
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"GET /search HTTP/1.1\r\n" +
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"User-Agent: Go http package\r\n" +
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"\r\n",
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},
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}
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func TestRequestWrite(t *testing.T) {
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for i := range reqWriteTests {
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tt := &reqWriteTests[i]
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if tt.Body != nil {
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tt.Req.Body = nopCloser{bytes.NewBuffer(tt.Body)}
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}
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var braw bytes.Buffer
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err := tt.Req.Write(&braw)
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if err != nil {
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@ -135,5 +171,20 @@ func TestRequestWrite(t *testing.T) {
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t.Errorf("Test %d, expecting:\n%s\nGot:\n%s\n", i, tt.Raw, sraw)
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continue
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}
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if tt.Body != nil {
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tt.Req.Body = nopCloser{bytes.NewBuffer(tt.Body)}
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}
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var praw bytes.Buffer
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err = tt.Req.WriteProxy(&praw)
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if err != nil {
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t.Errorf("error writing #%d: %s", i, err)
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continue
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}
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sraw = praw.String()
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if sraw != tt.RawProxy {
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t.Errorf("Test Proxy %d, expecting:\n%s\nGot:\n%s\n", i, tt.RawProxy, sraw)
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continue
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}
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}
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}
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@ -55,7 +55,10 @@ func (ct *transport) Do(req *Request) (resp *Response, err os.Error) {
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}
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}
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var write = (*Request).Write
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if proxy != "" {
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write = (*Request).WriteProxy
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proxyURL, err = ParseRequestURL(proxy)
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if err != nil {
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return nil, os.ErrorString("invalid proxy address")
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@ -130,7 +133,7 @@ func (ct *transport) Do(req *Request) (resp *Response, err os.Error) {
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}
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}
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err = req.Write(conn)
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err = write(req, conn)
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if err != nil {
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conn.Close()
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return nil, err
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