func TestHostHandlers(t *testing.T) {
for _, h := range handlers {
http.Handle(h.pattern, stringHandler(h.msg))
}
ts := httptest.NewServer(nil)
defer ts.Close()
conn, err := net.Dial("tcp", ts.Listener.Addr().String())
if err != nil {
t.Fatal(err)
}
defer conn.Close()
cc := httputil.NewClientConn(conn, nil)
for _, vt := range vtests {
var r *http.Response
var req http.Request
if req.URL, err = url.Parse(vt.url); err != nil {
t.Errorf("cannot parse url: %v", err)
continue
}
if err := cc.Write(&req); err != nil {
t.Errorf("writing request: %v", err)
continue
}
r, err := cc.Read(&req)
if err != nil {
t.Errorf("reading response: %v", err)
continue
}
s := r.Header.Get("Result")
if s != vt.expected {
t.Errorf("Get(%q) = %q, want %q", vt.url, s, vt.expected)
}
}
}
func BenchmarkClientServer(b *testing.B) {
b.StopTimer()
ts := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
fmt.Fprintf(rw, "Hello world.\n")
}))
defer ts.Close()
b.StartTimer()
for i := 0; i < b.N; i++ {
res, err := http.Get(ts.URL)
if err != nil {
b.Fatal("Get:", err)
}
all, err := ioutil.ReadAll(res.Body)
if err != nil {
b.Fatal("ReadAll:", err)
}
body := string(all)
if body != "Hello world.\n" {
b.Fatal("Got body:", body)
}
}
b.StopTimer()
}
// TestHeadResponses verifies that responses to HEAD requests don't
// declare that they're chunking in their response headers, aren't
// allowed to produce output, and don't set a Content-Type since
// the real type of the body data cannot be inferred.
func TestHeadResponses(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
_, err := w.Write([]byte("Ignored body"))
if err != http.ErrBodyNotAllowed {
t.Errorf("on Write, expected ErrBodyNotAllowed, got %v", err)
}
// Also exercise the ReaderFrom path
_, err = io.Copy(w, strings.NewReader("Ignored body"))
if err != http.ErrBodyNotAllowed {
t.Errorf("on Copy, expected ErrBodyNotAllowed, got %v", err)
}
}))
defer ts.Close()
res, err := http.Head(ts.URL)
if err != nil {
t.Error(err)
}
if len(res.TransferEncoding) > 0 {
t.Errorf("expected no TransferEncoding; got %v", res.TransferEncoding)
}
ct := res.Header.Get("Content-Type")
if ct != "" {
t.Errorf("expected no Content-Type; got %s", ct)
}
body, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Error(err)
}
if len(body) > 0 {
t.Errorf("got unexpected body %q", string(body))
}
}
func TestRequestBodyLimit(t *testing.T) {
const limit = 1 << 20
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
r.Body = http.MaxBytesReader(w, r.Body, limit)
n, err := io.Copy(ioutil.Discard, r.Body)
if err == nil {
t.Errorf("expected error from io.Copy")
}
if n != limit {
t.Errorf("io.Copy = %d, want %d", n, limit)
}
}))
defer ts.Close()
nWritten := int64(0)
req, _ := http.NewRequest("POST", ts.URL, io.LimitReader(countReader{neverEnding('a'), &nWritten}, limit*200))
// Send the POST, but don't care it succeeds or not. The
// remote side is going to reply and then close the TCP
// connection, and HTTP doesn't really define if that's
// allowed or not. Some HTTP clients will get the response
// and some (like ours, currently) will complain that the
// request write failed, without reading the response.
//
// But that's okay, since what we're really testing is that
// the remote side hung up on us before we wrote too much.
_, _ = http.DefaultClient.Do(req)
if nWritten > limit*100 {
t.Errorf("handler restricted the request body to %d bytes, but client managed to write %d",
limit, nWritten)
}
}
// TestClientWriteShutdown tests that if the client shuts down the write
// side of their TCP connection, the server doesn't send a 400 Bad Request.
func TestClientWriteShutdown(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
defer ts.Close()
conn, err := net.Dial("tcp", ts.Listener.Addr().String())
if err != nil {
t.Fatalf("Dial: %v", err)
}
err = conn.(*net.TCPConn).CloseWrite()
if err != nil {
t.Fatalf("Dial: %v", err)
}
donec := make(chan bool)
go func() {
defer close(donec)
bs, err := ioutil.ReadAll(conn)
if err != nil {
t.Fatalf("ReadAll: %v", err)
}
got := string(bs)
if got != "" {
t.Errorf("read %q from server; want nothing", got)
}
}()
select {
case <-donec:
case <-time.After(10 * time.Second):
t.Fatalf("timeout")
}
}
// TestContentLengthZero tests that for both an HTTP/1.0 and HTTP/1.1
// request (both keep-alive), when a Handler never writes any
// response, the net/http package adds a "Content-Length: 0" response
// header.
func TestContentLengthZero(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {}))
defer ts.Close()
for _, version := range []string{"HTTP/1.0", "HTTP/1.1"} {
conn, err := net.Dial("tcp", ts.Listener.Addr().String())
if err != nil {
t.Fatalf("error dialing: %v", err)
}
_, err = fmt.Fprintf(conn, "GET / %v\r\nConnection: keep-alive\r\nHost: foo\r\n\r\n", version)
if err != nil {
t.Fatalf("error writing: %v", err)
}
req, _ := http.NewRequest("GET", "/", nil)
res, err := http.ReadResponse(bufio.NewReader(conn), req)
if err != nil {
t.Fatalf("error reading response: %v", err)
}
if te := res.TransferEncoding; len(te) > 0 {
t.Errorf("For version %q, Transfer-Encoding = %q; want none", version, te)
}
if cl := res.ContentLength; cl != 0 {
t.Errorf("For version %q, Content-Length = %v; want 0", version, cl)
}
conn.Close()
}
}
func testHandlerPanic(t *testing.T, withHijack bool) {
// Unlike the other tests that set the log output to ioutil.Discard
// to quiet the output, this test uses a pipe. The pipe serves three
// purposes:
//
// 1) The log.Print from the http server (generated by the caught
// panic) will go to the pipe instead of stderr, making the
// output quiet.
//
// 2) We read from the pipe to verify that the handler
// actually caught the panic and logged something.
//
// 3) The blocking Read call prevents this TestHandlerPanic
// function from exiting before the HTTP server handler
// finishes crashing. If this text function exited too
// early (and its defer log.SetOutput(os.Stderr) ran),
// then the crash output could spill into the next test.
pr, pw := io.Pipe()
log.SetOutput(pw)
defer log.SetOutput(os.Stderr)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if withHijack {
rwc, _, err := w.(http.Hijacker).Hijack()
if err != nil {
t.Logf("unexpected error: %v", err)
}
defer rwc.Close()
}
panic("intentional death for testing")
}))
defer ts.Close()
// Do a blocking read on the log output pipe so its logging
// doesn't bleed into the next test. But wait only 5 seconds
// for it.
done := make(chan bool, 1)
go func() {
buf := make([]byte, 4<<10)
_, err := pr.Read(buf)
pr.Close()
if err != nil {
t.Fatal(err)
}
done <- true
}()
_, err := http.Get(ts.URL)
if err == nil {
t.Logf("expected an error")
}
select {
case <-done:
return
case <-time.After(5 * time.Second):
t.Fatal("expected server handler to log an error")
}
}
// Tests that the server responds to the "Expect" request header
// correctly.
func TestServerExpect(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// Note using r.FormValue("readbody") because for POST
// requests that would read from r.Body, which we only
// conditionally want to do.
if strings.Contains(r.URL.RawQuery, "readbody=true") {
ioutil.ReadAll(r.Body)
w.Write([]byte("Hi"))
} else {
w.WriteHeader(http.StatusUnauthorized)
}
}))
defer ts.Close()
runTest := func(test serverExpectTest) {
conn, err := net.Dial("tcp", ts.Listener.Addr().String())
if err != nil {
t.Fatalf("Dial: %v", err)
}
defer conn.Close()
sendf := func(format string, args ...interface{}) {
_, err := fmt.Fprintf(conn, format, args...)
if err != nil {
t.Fatalf("On test %#v, error writing %q: %v", test, format, err)
}
}
go func() {
sendf("POST /?readbody=%v HTTP/1.1\r\n"+
"Connection: close\r\n"+
"Content-Length: %d\r\n"+
"Expect: %s\r\nHost: foo\r\n\r\n",
test.readBody, test.contentLength, test.expectation)
if test.contentLength > 0 && strings.ToLower(test.expectation) != "100-continue" {
body := strings.Repeat("A", test.contentLength)
sendf(body)
}
}()
bufr := bufio.NewReader(conn)
line, err := bufr.ReadString('\n')
if err != nil {
t.Fatalf("ReadString: %v", err)
}
if !strings.Contains(line, test.expectedResponse) {
t.Errorf("for test %#v got first line=%q", test, line)
}
}
for _, test := range serverExpectTests {
runTest(test)
}
}
func TestNoDate(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header()["Date"] = nil
}))
defer ts.Close()
res, err := http.Get(ts.URL)
if err != nil {
t.Fatal(err)
}
_, present := res.Header["Date"]
if present {
t.Fatalf("Expected no Date header; got %v", res.Header["Date"])
}
}
func TestTimeoutHandler(t *testing.T) {
sendHi := make(chan bool, 1)
writeErrors := make(chan error, 1)
sayHi := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
<-sendHi
_, werr := w.Write([]byte("hi"))
writeErrors <- werr
})
timeout := make(chan time.Time, 1) // write to this to force timeouts
ts := httptest.NewServer(NewTestTimeoutHandler(sayHi, timeout))
defer ts.Close()
// Succeed without timing out:
sendHi <- true
res, err := http.Get(ts.URL)
if err != nil {
t.Error(err)
}
if g, e := res.StatusCode, http.StatusOK; g != e {
t.Errorf("got res.StatusCode %d; expected %d", g, e)
}
body, _ := ioutil.ReadAll(res.Body)
if g, e := string(body), "hi"; g != e {
t.Errorf("got body %q; expected %q", g, e)
}
if g := <-writeErrors; g != nil {
t.Errorf("got unexpected Write error on first request: %v", g)
}
// Times out:
timeout <- time.Time{}
res, err = http.Get(ts.URL)
if err != nil {
t.Error(err)
}
if g, e := res.StatusCode, http.StatusServiceUnavailable; g != e {
t.Errorf("got res.StatusCode %d; expected %d", g, e)
}
body, _ = ioutil.ReadAll(res.Body)
if !strings.Contains(string(body), "<title>Timeout</title>") {
t.Errorf("expected timeout body; got %q", string(body))
}
// Now make the previously-timed out handler speak again,
// which verifies the panic is handled:
sendHi <- true
if g, e := <-writeErrors, http.ErrHandlerTimeout; g != e {
t.Errorf("expected Write error of %v; got %v", e, g)
}
}
func TestSetsRemoteAddr(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "%s", r.RemoteAddr)
}))
defer ts.Close()
res, err := http.Get(ts.URL)
if err != nil {
t.Fatalf("Get error: %v", err)
}
body, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Fatalf("ReadAll error: %v", err)
}
ip := string(body)
if !strings.HasPrefix(ip, "127.0.0.1:") && !strings.HasPrefix(ip, "[::1]:") {
t.Fatalf("Expected local addr; got %q", ip)
}
}
func testTcpConnectionCloses(t *testing.T, req string, h http.Handler) {
s := httptest.NewServer(h)
defer s.Close()
conn, err := net.Dial("tcp", s.Listener.Addr().String())
if err != nil {
t.Fatal("dial error:", err)
}
defer conn.Close()
_, err = fmt.Fprint(conn, req)
if err != nil {
t.Fatal("print error:", err)
}
r := bufio.NewReader(conn)
res, err := http.ReadResponse(r, &http.Request{Method: "GET"})
if err != nil {
t.Fatal("ReadResponse error:", err)
}
didReadAll := make(chan bool, 1)
go func() {
select {
case <-time.After(5 * time.Second):
t.Error("body not closed after 5s")
return
case <-didReadAll:
}
}()
_, err = ioutil.ReadAll(r)
if err != nil {
t.Fatal("read error:", err)
}
didReadAll <- true
if !res.Close {
t.Errorf("Response.Close = false; want true")
}
}
func TestRequestLimit(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
t.Fatalf("didn't expect to get request in Handler")
}))
defer ts.Close()
req, _ := http.NewRequest("GET", ts.URL, nil)
var bytesPerHeader = len("header12345: val12345\r\n")
for i := 0; i < ((http.DefaultMaxHeaderBytes+4096)/bytesPerHeader)+1; i++ {
req.Header.Set(fmt.Sprintf("header%05d", i), fmt.Sprintf("val%05d", i))
}
res, err := http.DefaultClient.Do(req)
if err != nil {
// Some HTTP clients may fail on this undefined behavior (server replying and
// closing the connection while the request is still being written), but
// we do support it (at least currently), so we expect a response below.
t.Fatalf("Do: %v", err)
}
if res.StatusCode != 413 {
t.Fatalf("expected 413 response status; got: %d %s", res.StatusCode, res.Status)
}
}
func TestStripPrefix(t *testing.T) {
h := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("X-Path", r.URL.Path)
})
ts := httptest.NewServer(http.StripPrefix("/foo", h))
defer ts.Close()
res, err := http.Get(ts.URL + "/foo/bar")
if err != nil {
t.Fatal(err)
}
if g, e := res.Header.Get("X-Path"), "/bar"; g != e {
t.Errorf("test 1: got %s, want %s", g, e)
}
res, err = http.Get(ts.URL + "/bar")
if err != nil {
t.Fatal(err)
}
if g, e := res.StatusCode, 404; g != e {
t.Errorf("test 2: got status %v, want %v", g, e)
}
}
// TestZeroLengthPostAndResponse exercises an optimization done by the Transport:
// when there is no body (either because the method doesn't permit a body, or an
// explicit Content-Length of zero is present), then the transport can re-use the
// connection immediately. But when it re-uses the connection, it typically closes
// the previous request's body, which is not optimal for zero-lengthed bodies,
// as the client would then see http.ErrBodyReadAfterClose and not 0, io.EOF.
func TestZeroLengthPostAndResponse(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
all, err := ioutil.ReadAll(r.Body)
if err != nil {
t.Fatalf("handler ReadAll: %v", err)
}
if len(all) != 0 {
t.Errorf("handler got %d bytes; expected 0", len(all))
}
rw.Header().Set("Content-Length", "0")
}))
defer ts.Close()
req, err := http.NewRequest("POST", ts.URL, strings.NewReader(""))
if err != nil {
t.Fatal(err)
}
req.ContentLength = 0
var resp [5]*http.Response
for i := range resp {
resp[i], err = http.DefaultClient.Do(req)
if err != nil {
t.Fatalf("client post #%d: %v", i, err)
}
}
for i := range resp {
all, err := ioutil.ReadAll(resp[i].Body)
if err != nil {
t.Fatalf("req #%d: client ReadAll: %v", i, err)
}
if len(all) != 0 {
t.Errorf("req #%d: client got %d bytes; expected 0", i, len(all))
}
}
}
// Test304Responses verifies that 304s don't declare that they're
// chunking in their response headers and aren't allowed to produce
// output.
func Test304Responses(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotModified)
_, err := w.Write([]byte("illegal body"))
if err != http.ErrBodyNotAllowed {
t.Errorf("on Write, expected ErrBodyNotAllowed, got %v", err)
}
}))
defer ts.Close()
res, err := http.Get(ts.URL)
if err != nil {
t.Error(err)
}
if len(res.TransferEncoding) > 0 {
t.Errorf("expected no TransferEncoding; got %v", res.TransferEncoding)
}
body, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Error(err)
}
if len(body) > 0 {
t.Errorf("got unexpected body %q", string(body))
}
}
func TestChunkedResponseHeaders(t *testing.T) {
log.SetOutput(ioutil.Discard) // is noisy otherwise
defer log.SetOutput(os.Stderr)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Length", "intentional gibberish") // we check that this is deleted
fmt.Fprintf(w, "I am a chunked response.")
}))
defer ts.Close()
res, err := http.Get(ts.URL)
if err != nil {
t.Fatalf("Get error: %v", err)
}
if g, e := res.ContentLength, int64(-1); g != e {
t.Errorf("expected ContentLength of %d; got %d", e, g)
}
if g, e := res.TransferEncoding, []string{"chunked"}; !reflect.DeepEqual(g, e) {
t.Errorf("expected TransferEncoding of %v; got %v", e, g)
}
if _, haveCL := res.Header["Content-Length"]; haveCL {
t.Errorf("Unexpected Content-Length")
}
}
// TestIdentityResponse verifies that a handler can unset
func TestIdentityResponse(t *testing.T) {
handler := http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
rw.Header().Set("Content-Length", "3")
rw.Header().Set("Transfer-Encoding", req.FormValue("te"))
switch {
case req.FormValue("overwrite") == "1":
_, err := rw.Write([]byte("foo TOO LONG"))
if err != http.ErrContentLength {
t.Errorf("expected ErrContentLength; got %v", err)
}
case req.FormValue("underwrite") == "1":
rw.Header().Set("Content-Length", "500")
rw.Write([]byte("too short"))
default:
rw.Write([]byte("foo"))
}
})
ts := httptest.NewServer(handler)
defer ts.Close()
// Note: this relies on the assumption (which is true) that
// Get sends HTTP/1.1 or greater requests. Otherwise the
// server wouldn't have the choice to send back chunked
// responses.
for _, te := range []string{"", "identity"} {
url := ts.URL + "/?te=" + te
res, err := http.Get(url)
if err != nil {
t.Fatalf("error with Get of %s: %v", url, err)
}
if cl, expected := res.ContentLength, int64(3); cl != expected {
t.Errorf("for %s expected res.ContentLength of %d; got %d", url, expected, cl)
}
if cl, expected := res.Header.Get("Content-Length"), "3"; cl != expected {
t.Errorf("for %s expected Content-Length header of %q; got %q", url, expected, cl)
}
if tl, expected := len(res.TransferEncoding), 0; tl != expected {
t.Errorf("for %s expected len(res.TransferEncoding) of %d; got %d (%v)",
url, expected, tl, res.TransferEncoding)
}
res.Body.Close()
}
// Verify that ErrContentLength is returned
url := ts.URL + "/?overwrite=1"
_, err := http.Get(url)
if err != nil {
t.Fatalf("error with Get of %s: %v", url, err)
}
// Verify that the connection is closed when the declared Content-Length
// is larger than what the handler wrote.
conn, err := net.Dial("tcp", ts.Listener.Addr().String())
if err != nil {
t.Fatalf("error dialing: %v", err)
}
_, err = conn.Write([]byte("GET /?underwrite=1 HTTP/1.1\r\nHost: foo\r\n\r\n"))
if err != nil {
t.Fatalf("error writing: %v", err)
}
// The ReadAll will hang for a failing test, so use a Timer to
// fail explicitly.
goTimeout(t, 2*time.Second, func() {
got, _ := ioutil.ReadAll(conn)
expectedSuffix := "\r\n\r\ntoo short"
if !strings.HasSuffix(string(got), expectedSuffix) {
t.Errorf("Expected output to end with %q; got response body %q",
expectedSuffix, string(got))
}
})
}