// Copyright 2009 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. // Tests for client.go package http_test import ( "bytes" "crypto/tls" "crypto/x509" "encoding/base64" "errors" "fmt" "io" "io/ioutil" "log" "net" . "net/http" "net/http/httptest" "net/url" "reflect" "sort" "strconv" "strings" "sync" "testing" "time" ) var robotsTxtHandler = HandlerFunc(func(w ResponseWriter, r *Request) { w.Header().Set("Last-Modified", "sometime") fmt.Fprintf(w, "User-agent: go\nDisallow: /something/") }) // pedanticReadAll works like ioutil.ReadAll but additionally // verifies that r obeys the documented io.Reader contract. func pedanticReadAll(r io.Reader) (b []byte, err error) { var bufa [64]byte buf := bufa[:] for { n, err := r.Read(buf) if n == 0 && err == nil { return nil, fmt.Errorf("Read: n=0 with err=nil") } b = append(b, buf[:n]...) if err == io.EOF { n, err := r.Read(buf) if n != 0 || err != io.EOF { return nil, fmt.Errorf("Read: n=%d err=%#v after EOF", n, err) } return b, nil } if err != nil { return b, err } } } type chanWriter chan string func (w chanWriter) Write(p []byte) (n int, err error) { w <- string(p) return len(p), nil } func TestClient(t *testing.T) { defer afterTest(t) ts := httptest.NewServer(robotsTxtHandler) defer ts.Close() r, err := Get(ts.URL) var b []byte if err == nil { b, err = pedanticReadAll(r.Body) r.Body.Close() } if err != nil { t.Error(err) } else if s := string(b); !strings.HasPrefix(s, "User-agent:") { t.Errorf("Incorrect page body (did not begin with User-agent): %q", s) } } func TestClientHead(t *testing.T) { defer afterTest(t) ts := httptest.NewServer(robotsTxtHandler) defer ts.Close() r, err := Head(ts.URL) if err != nil { t.Fatal(err) } if _, ok := r.Header["Last-Modified"]; !ok { t.Error("Last-Modified header not found.") } } type recordingTransport struct { req *Request } func (t *recordingTransport) RoundTrip(req *Request) (resp *Response, err error) { t.req = req return nil, errors.New("dummy impl") } func TestGetRequestFormat(t *testing.T) { defer afterTest(t) tr := &recordingTransport{} client := &Client{Transport: tr} url := "http://dummy.faketld/" client.Get(url) // Note: doesn't hit network if tr.req.Method != "GET" { t.Errorf("expected method %q; got %q", "GET", tr.req.Method) } if tr.req.URL.String() != url { t.Errorf("expected URL %q; got %q", url, tr.req.URL.String()) } if tr.req.Header == nil { t.Errorf("expected non-nil request Header") } } func TestPostRequestFormat(t *testing.T) { defer afterTest(t) tr := &recordingTransport{} client := &Client{Transport: tr} url := "http://dummy.faketld/" json := `{"key":"value"}` b := strings.NewReader(json) client.Post(url, "application/json", b) // Note: doesn't hit network if tr.req.Method != "POST" { t.Errorf("got method %q, want %q", tr.req.Method, "POST") } if tr.req.URL.String() != url { t.Errorf("got URL %q, want %q", tr.req.URL.String(), url) } if tr.req.Header == nil { t.Fatalf("expected non-nil request Header") } if tr.req.Close { t.Error("got Close true, want false") } if g, e := tr.req.ContentLength, int64(len(json)); g != e { t.Errorf("got ContentLength %d, want %d", g, e) } } func TestPostFormRequestFormat(t *testing.T) { defer afterTest(t) tr := &recordingTransport{} client := &Client{Transport: tr} urlStr := "http://dummy.faketld/" form := make(url.Values) form.Set("foo", "bar") form.Add("foo", "bar2") form.Set("bar", "baz") client.PostForm(urlStr, form) // Note: doesn't hit network if tr.req.Method != "POST" { t.Errorf("got method %q, want %q", tr.req.Method, "POST") } if tr.req.URL.String() != urlStr { t.Errorf("got URL %q, want %q", tr.req.URL.String(), urlStr) } if tr.req.Header == nil { t.Fatalf("expected non-nil request Header") } if g, e := tr.req.Header.Get("Content-Type"), "application/x-www-form-urlencoded"; g != e { t.Errorf("got Content-Type %q, want %q", g, e) } if tr.req.Close { t.Error("got Close true, want false") } // Depending on map iteration, body can be either of these. expectedBody := "foo=bar&foo=bar2&bar=baz" expectedBody1 := "bar=baz&foo=bar&foo=bar2" if g, e := tr.req.ContentLength, int64(len(expectedBody)); g != e { t.Errorf("got ContentLength %d, want %d", g, e) } bodyb, err := ioutil.ReadAll(tr.req.Body) if err != nil { t.Fatalf("ReadAll on req.Body: %v", err) } if g := string(bodyb); g != expectedBody && g != expectedBody1 { t.Errorf("got body %q, want %q or %q", g, expectedBody, expectedBody1) } } func TestClientRedirects(t *testing.T) { defer afterTest(t) var ts *httptest.Server ts = httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { n, _ := strconv.Atoi(r.FormValue("n")) // Test Referer header. (7 is arbitrary position to test at) if n == 7 { if g, e := r.Referer(), ts.URL+"/?n=6"; e != g { t.Errorf("on request ?n=7, expected referer of %q; got %q", e, g) } } if n < 15 { Redirect(w, r, fmt.Sprintf("/?n=%d", n+1), StatusFound) return } fmt.Fprintf(w, "n=%d", n) })) defer ts.Close() c := &Client{} _, err := c.Get(ts.URL) if e, g := "Get /?n=10: stopped after 10 redirects", fmt.Sprintf("%v", err); e != g { t.Errorf("with default client Get, expected error %q, got %q", e, g) } // HEAD request should also have the ability to follow redirects. _, err = c.Head(ts.URL) if e, g := "Head /?n=10: stopped after 10 redirects", fmt.Sprintf("%v", err); e != g { t.Errorf("with default client Head, expected error %q, got %q", e, g) } // Do should also follow redirects. greq, _ := NewRequest("GET", ts.URL, nil) _, err = c.Do(greq) if e, g := "Get /?n=10: stopped after 10 redirects", fmt.Sprintf("%v", err); e != g { t.Errorf("with default client Do, expected error %q, got %q", e, g) } var checkErr error var lastVia []*Request c = &Client{CheckRedirect: func(_ *Request, via []*Request) error { lastVia = via return checkErr }} res, err := c.Get(ts.URL) if err != nil { t.Fatalf("Get error: %v", err) } res.Body.Close() finalUrl := res.Request.URL.String() if e, g := "", fmt.Sprintf("%v", err); e != g { t.Errorf("with custom client, expected error %q, got %q", e, g) } if !strings.HasSuffix(finalUrl, "/?n=15") { t.Errorf("expected final url to end in /?n=15; got url %q", finalUrl) } if e, g := 15, len(lastVia); e != g { t.Errorf("expected lastVia to have contained %d elements; got %d", e, g) } checkErr = errors.New("no redirects allowed") res, err = c.Get(ts.URL) if urlError, ok := err.(*url.Error); !ok || urlError.Err != checkErr { t.Errorf("with redirects forbidden, expected a *url.Error with our 'no redirects allowed' error inside; got %#v (%q)", err, err) } if res == nil { t.Fatalf("Expected a non-nil Response on CheckRedirect failure (http://golang.org/issue/3795)") } res.Body.Close() if res.Header.Get("Location") == "" { t.Errorf("no Location header in Response") } } func TestPostRedirects(t *testing.T) { defer afterTest(t) var log struct { sync.Mutex bytes.Buffer } var ts *httptest.Server ts = httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { log.Lock() fmt.Fprintf(&log.Buffer, "%s %s ", r.Method, r.RequestURI) log.Unlock() if v := r.URL.Query().Get("code"); v != "" { code, _ := strconv.Atoi(v) if code/100 == 3 { w.Header().Set("Location", ts.URL) } w.WriteHeader(code) } })) defer ts.Close() tests := []struct { suffix string want int // response code }{ {"/", 200}, {"/?code=301", 301}, {"/?code=302", 200}, {"/?code=303", 200}, {"/?code=404", 404}, } for _, tt := range tests { res, err := Post(ts.URL+tt.suffix, "text/plain", strings.NewReader("Some content")) if err != nil { t.Fatal(err) } if res.StatusCode != tt.want { t.Errorf("POST %s: status code = %d; want %d", tt.suffix, res.StatusCode, tt.want) } } log.Lock() got := log.String() log.Unlock() want := "POST / POST /?code=301 POST /?code=302 GET / POST /?code=303 GET / POST /?code=404 " if got != want { t.Errorf("Log differs.\n Got: %q\nWant: %q", got, want) } } var expectedCookies = []*Cookie{ {Name: "ChocolateChip", Value: "tasty"}, {Name: "First", Value: "Hit"}, {Name: "Second", Value: "Hit"}, } var echoCookiesRedirectHandler = HandlerFunc(func(w ResponseWriter, r *Request) { for _, cookie := range r.Cookies() { SetCookie(w, cookie) } if r.URL.Path == "/" { SetCookie(w, expectedCookies[1]) Redirect(w, r, "/second", StatusMovedPermanently) } else { SetCookie(w, expectedCookies[2]) w.Write([]byte("hello")) } }) func TestClientSendsCookieFromJar(t *testing.T) { tr := &recordingTransport{} client := &Client{Transport: tr} client.Jar = &TestJar{perURL: make(map[string][]*Cookie)} us := "http://dummy.faketld/" u, _ := url.Parse(us) client.Jar.SetCookies(u, expectedCookies) client.Get(us) // Note: doesn't hit network matchReturnedCookies(t, expectedCookies, tr.req.Cookies()) client.Head(us) // Note: doesn't hit network matchReturnedCookies(t, expectedCookies, tr.req.Cookies()) client.Post(us, "text/plain", strings.NewReader("body")) // Note: doesn't hit network matchReturnedCookies(t, expectedCookies, tr.req.Cookies()) client.PostForm(us, url.Values{}) // Note: doesn't hit network matchReturnedCookies(t, expectedCookies, tr.req.Cookies()) req, _ := NewRequest("GET", us, nil) client.Do(req) // Note: doesn't hit network matchReturnedCookies(t, expectedCookies, tr.req.Cookies()) req, _ = NewRequest("POST", us, nil) client.Do(req) // Note: doesn't hit network matchReturnedCookies(t, expectedCookies, tr.req.Cookies()) } // Just enough correctness for our redirect tests. Uses the URL.Host as the // scope of all cookies. type TestJar struct { m sync.Mutex perURL map[string][]*Cookie } func (j *TestJar) SetCookies(u *url.URL, cookies []*Cookie) { j.m.Lock() defer j.m.Unlock() if j.perURL == nil { j.perURL = make(map[string][]*Cookie) } j.perURL[u.Host] = cookies } func (j *TestJar) Cookies(u *url.URL) []*Cookie { j.m.Lock() defer j.m.Unlock() return j.perURL[u.Host] } func TestRedirectCookiesJar(t *testing.T) { defer afterTest(t) var ts *httptest.Server ts = httptest.NewServer(echoCookiesRedirectHandler) defer ts.Close() c := &Client{ Jar: new(TestJar), } u, _ := url.Parse(ts.URL) c.Jar.SetCookies(u, []*Cookie{expectedCookies[0]}) resp, err := c.Get(ts.URL) if err != nil { t.Fatalf("Get: %v", err) } resp.Body.Close() matchReturnedCookies(t, expectedCookies, resp.Cookies()) } func matchReturnedCookies(t *testing.T, expected, given []*Cookie) { if len(given) != len(expected) { t.Logf("Received cookies: %v", given) t.Errorf("Expected %d cookies, got %d", len(expected), len(given)) } for _, ec := range expected { foundC := false for _, c := range given { if ec.Name == c.Name && ec.Value == c.Value { foundC = true break } } if !foundC { t.Errorf("Missing cookie %v", ec) } } } func TestJarCalls(t *testing.T) { defer afterTest(t) ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { pathSuffix := r.RequestURI[1:] if r.RequestURI == "/nosetcookie" { return // dont set cookies for this path } SetCookie(w, &Cookie{Name: "name" + pathSuffix, Value: "val" + pathSuffix}) if r.RequestURI == "/" { Redirect(w, r, "http://secondhost.fake/secondpath", 302) } })) defer ts.Close() jar := new(RecordingJar) c := &Client{ Jar: jar, Transport: &Transport{ Dial: func(_ string, _ string) (net.Conn, error) { return net.Dial("tcp", ts.Listener.Addr().String()) }, }, } _, err := c.Get("http://firsthost.fake/") if err != nil { t.Fatal(err) } _, err = c.Get("http://firsthost.fake/nosetcookie") if err != nil { t.Fatal(err) } got := jar.log.String() want := `Cookies("http://firsthost.fake/") SetCookie("http://firsthost.fake/", [name=val]) Cookies("http://secondhost.fake/secondpath") SetCookie("http://secondhost.fake/secondpath", [namesecondpath=valsecondpath]) Cookies("http://firsthost.fake/nosetcookie") ` if got != want { t.Errorf("Got Jar calls:\n%s\nWant:\n%s", got, want) } } // RecordingJar keeps a log of calls made to it, without // tracking any cookies. type RecordingJar struct { mu sync.Mutex log bytes.Buffer } func (j *RecordingJar) SetCookies(u *url.URL, cookies []*Cookie) { j.logf("SetCookie(%q, %v)\n", u, cookies) } func (j *RecordingJar) Cookies(u *url.URL) []*Cookie { j.logf("Cookies(%q)\n", u) return nil } func (j *RecordingJar) logf(format string, args ...interface{}) { j.mu.Lock() defer j.mu.Unlock() fmt.Fprintf(&j.log, format, args...) } func TestStreamingGet(t *testing.T) { defer afterTest(t) say := make(chan string) ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { w.(Flusher).Flush() for str := range say { w.Write([]byte(str)) w.(Flusher).Flush() } })) defer ts.Close() c := &Client{} res, err := c.Get(ts.URL) if err != nil { t.Fatal(err) } var buf [10]byte for _, str := range []string{"i", "am", "also", "known", "as", "comet"} { say <- str n, err := io.ReadFull(res.Body, buf[0:len(str)]) if err != nil { t.Fatalf("ReadFull on %q: %v", str, err) } if n != len(str) { t.Fatalf("Receiving %q, only read %d bytes", str, n) } got := string(buf[0:n]) if got != str { t.Fatalf("Expected %q, got %q", str, got) } } close(say) _, err = io.ReadFull(res.Body, buf[0:1]) if err != io.EOF { t.Fatalf("at end expected EOF, got %v", err) } } type writeCountingConn struct { net.Conn count *int } func (c *writeCountingConn) Write(p []byte) (int, error) { *c.count++ return c.Conn.Write(p) } // TestClientWrites verifies that client requests are buffered and we // don't send a TCP packet per line of the http request + body. func TestClientWrites(t *testing.T) { defer afterTest(t) ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { })) defer ts.Close() writes := 0 dialer := func(netz string, addr string) (net.Conn, error) { c, err := net.Dial(netz, addr) if err == nil { c = &writeCountingConn{c, &writes} } return c, err } c := &Client{Transport: &Transport{Dial: dialer}} _, err := c.Get(ts.URL) if err != nil { t.Fatal(err) } if writes != 1 { t.Errorf("Get request did %d Write calls, want 1", writes) } writes = 0 _, err = c.PostForm(ts.URL, url.Values{"foo": {"bar"}}) if err != nil { t.Fatal(err) } if writes != 1 { t.Errorf("Post request did %d Write calls, want 1", writes) } } func TestClientInsecureTransport(t *testing.T) { defer afterTest(t) ts := httptest.NewTLSServer(HandlerFunc(func(w ResponseWriter, r *Request) { w.Write([]byte("Hello")) })) errc := make(chanWriter, 10) // but only expecting 1 ts.Config.ErrorLog = log.New(errc, "", 0) defer ts.Close() // TODO(bradfitz): add tests for skipping hostname checks too? // would require a new cert for testing, and probably // redundant with these tests. for _, insecure := range []bool{true, false} { tr := &Transport{ TLSClientConfig: &tls.Config{ InsecureSkipVerify: insecure, }, } defer tr.CloseIdleConnections() c := &Client{Transport: tr} res, err := c.Get(ts.URL) if (err == nil) != insecure { t.Errorf("insecure=%v: got unexpected err=%v", insecure, err) } if res != nil { res.Body.Close() } } select { case v := <-errc: if !strings.Contains(v, "TLS handshake error") { t.Errorf("expected an error log message containing 'TLS handshake error'; got %q", v) } case <-time.After(5 * time.Second): t.Errorf("timeout waiting for logged error") } } func TestClientErrorWithRequestURI(t *testing.T) { defer afterTest(t) req, _ := NewRequest("GET", "http://localhost:1234/", nil) req.RequestURI = "/this/field/is/illegal/and/should/error/" _, err := DefaultClient.Do(req) if err == nil { t.Fatalf("expected an error") } if !strings.Contains(err.Error(), "RequestURI") { t.Errorf("wanted error mentioning RequestURI; got error: %v", err) } } func newTLSTransport(t *testing.T, ts *httptest.Server) *Transport { certs := x509.NewCertPool() for _, c := range ts.TLS.Certificates { roots, err := x509.ParseCertificates(c.Certificate[len(c.Certificate)-1]) if err != nil { t.Fatalf("error parsing server's root cert: %v", err) } for _, root := range roots { certs.AddCert(root) } } return &Transport{ TLSClientConfig: &tls.Config{RootCAs: certs}, } } func TestClientWithCorrectTLSServerName(t *testing.T) { defer afterTest(t) ts := httptest.NewTLSServer(HandlerFunc(func(w ResponseWriter, r *Request) { if r.TLS.ServerName != "127.0.0.1" { t.Errorf("expected client to set ServerName 127.0.0.1, got: %q", r.TLS.ServerName) } })) defer ts.Close() c := &Client{Transport: newTLSTransport(t, ts)} if _, err := c.Get(ts.URL); err != nil { t.Fatalf("expected successful TLS connection, got error: %v", err) } } func TestClientWithIncorrectTLSServerName(t *testing.T) { defer afterTest(t) ts := httptest.NewTLSServer(HandlerFunc(func(w ResponseWriter, r *Request) {})) defer ts.Close() errc := make(chanWriter, 10) // but only expecting 1 ts.Config.ErrorLog = log.New(errc, "", 0) trans := newTLSTransport(t, ts) trans.TLSClientConfig.ServerName = "badserver" c := &Client{Transport: trans} _, err := c.Get(ts.URL) if err == nil { t.Fatalf("expected an error") } if !strings.Contains(err.Error(), "127.0.0.1") || !strings.Contains(err.Error(), "badserver") { t.Errorf("wanted error mentioning 127.0.0.1 and badserver; got error: %v", err) } select { case v := <-errc: if !strings.Contains(v, "TLS handshake error") { t.Errorf("expected an error log message containing 'TLS handshake error'; got %q", v) } case <-time.After(5 * time.Second): t.Errorf("timeout waiting for logged error") } } // Test for golang.org/issue/5829; the Transport should respect TLSClientConfig.ServerName // when not empty. // // tls.Config.ServerName (non-empty, set to "example.com") takes // precedence over "some-other-host.tld" which previously incorrectly // took precedence. We don't actually connect to (or even resolve) // "some-other-host.tld", though, because of the Transport.Dial hook. // // The httptest.Server has a cert with "example.com" as its name. func TestTransportUsesTLSConfigServerName(t *testing.T) { defer afterTest(t) ts := httptest.NewTLSServer(HandlerFunc(func(w ResponseWriter, r *Request) { w.Write([]byte("Hello")) })) defer ts.Close() tr := newTLSTransport(t, ts) tr.TLSClientConfig.ServerName = "example.com" // one of httptest's Server cert names tr.Dial = func(netw, addr string) (net.Conn, error) { return net.Dial(netw, ts.Listener.Addr().String()) } defer tr.CloseIdleConnections() c := &Client{Transport: tr} res, err := c.Get("https://some-other-host.tld/") if err != nil { t.Fatal(err) } res.Body.Close() } func TestResponseSetsTLSConnectionState(t *testing.T) { defer afterTest(t) ts := httptest.NewTLSServer(HandlerFunc(func(w ResponseWriter, r *Request) { w.Write([]byte("Hello")) })) defer ts.Close() tr := newTLSTransport(t, ts) tr.TLSClientConfig.CipherSuites = []uint16{tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA} tr.Dial = func(netw, addr string) (net.Conn, error) { return net.Dial(netw, ts.Listener.Addr().String()) } defer tr.CloseIdleConnections() c := &Client{Transport: tr} res, err := c.Get("https://example.com/") if err != nil { t.Fatal(err) } defer res.Body.Close() if res.TLS == nil { t.Fatal("Response didn't set TLS Connection State.") } if got, want := res.TLS.CipherSuite, tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA; got != want { t.Errorf("TLS Cipher Suite = %d; want %d", got, want) } } // Verify Response.ContentLength is populated. http://golang.org/issue/4126 func TestClientHeadContentLength(t *testing.T) { defer afterTest(t) ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { if v := r.FormValue("cl"); v != "" { w.Header().Set("Content-Length", v) } })) defer ts.Close() tests := []struct { suffix string want int64 }{ {"/?cl=1234", 1234}, {"/?cl=0", 0}, {"", -1}, } for _, tt := range tests { req, _ := NewRequest("HEAD", ts.URL+tt.suffix, nil) res, err := DefaultClient.Do(req) if err != nil { t.Fatal(err) } if res.ContentLength != tt.want { t.Errorf("Content-Length = %d; want %d", res.ContentLength, tt.want) } bs, err := ioutil.ReadAll(res.Body) if err != nil { t.Fatal(err) } if len(bs) != 0 { t.Errorf("Unexpected content: %q", bs) } } } func TestEmptyPasswordAuth(t *testing.T) { defer afterTest(t) gopher := "gopher" ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { auth := r.Header.Get("Authorization") if strings.HasPrefix(auth, "Basic ") { encoded := auth[6:] decoded, err := base64.StdEncoding.DecodeString(encoded) if err != nil { t.Fatal(err) } expected := gopher + ":" s := string(decoded) if expected != s { t.Errorf("Invalid Authorization header. Got %q, wanted %q", s, expected) } } else { t.Errorf("Invalid auth %q", auth) } })) defer ts.Close() c := &Client{} req, err := NewRequest("GET", ts.URL, nil) if err != nil { t.Fatal(err) } req.URL.User = url.User(gopher) resp, err := c.Do(req) if err != nil { t.Fatal(err) } defer resp.Body.Close() } func TestBasicAuth(t *testing.T) { defer afterTest(t) tr := &recordingTransport{} client := &Client{Transport: tr} url := "http://My%20User:My%20Pass@dummy.faketld/" expected := "My User:My Pass" client.Get(url) if tr.req.Method != "GET" { t.Errorf("got method %q, want %q", tr.req.Method, "GET") } if tr.req.URL.String() != url { t.Errorf("got URL %q, want %q", tr.req.URL.String(), url) } if tr.req.Header == nil { t.Fatalf("expected non-nil request Header") } auth := tr.req.Header.Get("Authorization") if strings.HasPrefix(auth, "Basic ") { encoded := auth[6:] decoded, err := base64.StdEncoding.DecodeString(encoded) if err != nil { t.Fatal(err) } s := string(decoded) if expected != s { t.Errorf("Invalid Authorization header. Got %q, wanted %q", s, expected) } } else { t.Errorf("Invalid auth %q", auth) } } func TestClientTimeout(t *testing.T) { if testing.Short() { t.Skip("skipping in short mode") } defer afterTest(t) sawRoot := make(chan bool, 1) sawSlow := make(chan bool, 1) ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { if r.URL.Path == "/" { sawRoot <- true Redirect(w, r, "/slow", StatusFound) return } if r.URL.Path == "/slow" { w.Write([]byte("Hello")) w.(Flusher).Flush() sawSlow <- true time.Sleep(2 * time.Second) return } })) defer ts.Close() const timeout = 500 * time.Millisecond c := &Client{ Timeout: timeout, } res, err := c.Get(ts.URL) if err != nil { t.Fatal(err) } select { case <-sawRoot: // good. default: t.Fatal("handler never got / request") } select { case <-sawSlow: // good. default: t.Fatal("handler never got /slow request") } errc := make(chan error, 1) go func() { _, err := ioutil.ReadAll(res.Body) errc <- err res.Body.Close() }() const failTime = timeout * 2 select { case err := <-errc: if err == nil { t.Error("expected error from ReadAll") } // Expected error. case <-time.After(failTime): t.Errorf("timeout after %v waiting for timeout of %v", failTime, timeout) } } func TestClientRedirectEatsBody(t *testing.T) { defer afterTest(t) saw := make(chan string, 2) ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { saw <- r.RemoteAddr if r.URL.Path == "/" { Redirect(w, r, "/foo", StatusFound) // which includes a body } })) defer ts.Close() res, err := Get(ts.URL) if err != nil { t.Fatal(err) } _, err = ioutil.ReadAll(res.Body) if err != nil { t.Fatal(err) } res.Body.Close() var first string select { case first = <-saw: default: t.Fatal("server didn't see a request") } var second string select { case second = <-saw: default: t.Fatal("server didn't see a second request") } if first != second { t.Fatal("server saw different client ports before & after the redirect") } } // eofReaderFunc is an io.Reader that runs itself, and then returns io.EOF. type eofReaderFunc func() func (f eofReaderFunc) Read(p []byte) (n int, err error) { f() return 0, io.EOF } func TestClientTrailers(t *testing.T) { defer afterTest(t) ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) { w.Header().Set("Connection", "close") w.Header().Set("Trailer", "Server-Trailer-A, Server-Trailer-B") w.Header().Add("Trailer", "Server-Trailer-C") var decl []string for k := range r.Trailer { decl = append(decl, k) } sort.Strings(decl) slurp, err := ioutil.ReadAll(r.Body) if err != nil { t.Errorf("Server reading request body: %v", err) } if string(slurp) != "foo" { t.Errorf("Server read request body %q; want foo", slurp) } if r.Trailer == nil { io.WriteString(w, "nil Trailer") } else { fmt.Fprintf(w, "decl: %v, vals: %s, %s", decl, r.Trailer.Get("Client-Trailer-A"), r.Trailer.Get("Client-Trailer-B")) } // TODO: golang.org/issue/7759: there's no way yet for // the server to set trailers without hijacking, so do // that for now, just to test the client. Later, in // Go 1.4, it should be implicit that any mutations // to w.Header() after the initial write are the // trailers to be sent, if and only if they were // previously declared with w.Header().Set("Trailer", // ..keys..) w.(Flusher).Flush() conn, buf, _ := w.(Hijacker).Hijack() t := Header{} t.Set("Server-Trailer-A", "valuea") t.Set("Server-Trailer-C", "valuec") // skipping B buf.WriteString("0\r\n") // eof t.Write(buf) buf.WriteString("\r\n") // end of trailers buf.Flush() conn.Close() })) defer ts.Close() var req *Request req, _ = NewRequest("POST", ts.URL, io.MultiReader( eofReaderFunc(func() { req.Trailer["Client-Trailer-A"] = []string{"valuea"} }), strings.NewReader("foo"), eofReaderFunc(func() { req.Trailer["Client-Trailer-B"] = []string{"valueb"} }), )) req.Trailer = Header{ "Client-Trailer-A": nil, // to be set later "Client-Trailer-B": nil, // to be set later } req.ContentLength = -1 res, err := DefaultClient.Do(req) if err != nil { t.Fatal(err) } if err := wantBody(res, err, "decl: [Client-Trailer-A Client-Trailer-B], vals: valuea, valueb"); err != nil { t.Error(err) } want := Header{ "Server-Trailer-A": []string{"valuea"}, "Server-Trailer-B": nil, "Server-Trailer-C": []string{"valuec"}, } if !reflect.DeepEqual(res.Trailer, want) { t.Errorf("Response trailers = %#v; want %#v", res.Trailer, want) } }