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client_test.go
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// 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"
"context"
"crypto/tls"
"encoding/base64"
"errors"
"fmt"
"io"
"log"
"net"
"net/url"
"reflect"
"runtime"
"strconv"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
. "github.com/ooni/oohttp"
cookiejar "github.com/ooni/oohttp/cookiejar"
httptest "github.com/ooni/oohttp/httptest"
testenv "github.com/ooni/oohttp/internal/testenv"
)
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 io.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
}
}
}
func TestClient(t *testing.T) { run(t, testClient) }
func testClient(t *testing.T, mode testMode) {
ts := newClientServerTest(t, mode, robotsTxtHandler).ts
c := ts.Client()
r, err := c.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) { run(t, testClientHead) }
func testClientHead(t *testing.T, mode testMode) {
cst := newClientServerTest(t, mode, robotsTxtHandler)
r, err := cst.c.Head(cst.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) {
setParallel(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 := io.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) { run(t, testClientRedirects) }
func testClientRedirects(t *testing.T, mode testMode) {
var ts *httptest.Server
ts = newClientServerTest(t, mode, 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), StatusTemporaryRedirect)
return
}
fmt.Fprintf(w, "n=%d", n)
})).ts
c := ts.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)
}
// Requests with an empty Method should also redirect (Issue 12705)
greq.Method = ""
_, 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 and empty Method, expected error %q, got %q", e, g)
}
var checkErr error
var lastVia []*Request
var lastReq *Request
c.CheckRedirect = func(req *Request, via []*Request) error {
lastReq = req
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 := "<nil>", 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)
}
// Test that Request.Cancel is propagated between requests (Issue 14053)
creq, _ := NewRequest("HEAD", ts.URL, nil)
cancel := make(chan struct{})
creq.Cancel = cancel
if _, err := c.Do(creq); err != nil {
t.Fatal(err)
}
if lastReq == nil {
t.Fatal("didn't see redirect")
}
if lastReq.Cancel != cancel {
t.Errorf("expected lastReq to have the cancel channel set on the initial req")
}
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 (https://golang.org/issue/3795)")
}
res.Body.Close()
if res.Header.Get("Location") == "" {
t.Errorf("no Location header in Response")
}
}
// Tests that Client redirects' contexts are derived from the original request's context.
func TestClientRedirectsContext(t *testing.T) { run(t, testClientRedirectsContext) }
func testClientRedirectsContext(t *testing.T, mode testMode) {
ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
Redirect(w, r, "/", StatusTemporaryRedirect)
})).ts
ctx, cancel := context.WithCancel(context.Background())
c := ts.Client()
c.CheckRedirect = func(req *Request, via []*Request) error {
cancel()
select {
case <-req.Context().Done():
return nil
case <-time.After(5 * time.Second):
return errors.New("redirected request's context never expired after root request canceled")
}
}
req, _ := NewRequestWithContext(ctx, "GET", ts.URL, nil)
_, err := c.Do(req)
ue, ok := err.(*url.Error)
if !ok {
t.Fatalf("got error %T; want *url.Error", err)
}
if ue.Err != context.Canceled {
t.Errorf("url.Error.Err = %v; want %v", ue.Err, context.Canceled)
}
}
type redirectTest struct {
suffix string
want int // response code
redirectBody string
}
func TestPostRedirects(t *testing.T) {
postRedirectTests := []redirectTest{
{"/", 200, "first"},
{"/?code=301&next=302", 200, "c301"},
{"/?code=302&next=302", 200, "c302"},
{"/?code=303&next=301", 200, "c303wc301"}, // Issue 9348
{"/?code=304", 304, "c304"},
{"/?code=305", 305, "c305"},
{"/?code=307&next=303,308,302", 200, "c307"},
{"/?code=308&next=302,301", 200, "c308"},
{"/?code=404", 404, "c404"},
}
wantSegments := []string{
`POST / "first"`,
`POST /?code=301&next=302 "c301"`,
`GET /?code=302 ""`,
`GET / ""`,
`POST /?code=302&next=302 "c302"`,
`GET /?code=302 ""`,
`GET / ""`,
`POST /?code=303&next=301 "c303wc301"`,
`GET /?code=301 ""`,
`GET / ""`,
`POST /?code=304 "c304"`,
`POST /?code=305 "c305"`,
`POST /?code=307&next=303,308,302 "c307"`,
`POST /?code=303&next=308,302 "c307"`,
`GET /?code=308&next=302 ""`,
`GET /?code=302 "c307"`,
`GET / ""`,
`POST /?code=308&next=302,301 "c308"`,
`POST /?code=302&next=301 "c308"`,
`GET /?code=301 ""`,
`GET / ""`,
`POST /?code=404 "c404"`,
}
want := strings.Join(wantSegments, "\n")
run(t, func(t *testing.T, mode testMode) {
testRedirectsByMethod(t, mode, "POST", postRedirectTests, want)
})
}
func TestDeleteRedirects(t *testing.T) {
deleteRedirectTests := []redirectTest{
{"/", 200, "first"},
{"/?code=301&next=302,308", 200, "c301"},
{"/?code=302&next=302", 200, "c302"},
{"/?code=303", 200, "c303"},
{"/?code=307&next=301,308,303,302,304", 304, "c307"},
{"/?code=308&next=307", 200, "c308"},
{"/?code=404", 404, "c404"},
}
wantSegments := []string{
`DELETE / "first"`,
`DELETE /?code=301&next=302,308 "c301"`,
`GET /?code=302&next=308 ""`,
`GET /?code=308 ""`,
`GET / "c301"`,
`DELETE /?code=302&next=302 "c302"`,
`GET /?code=302 ""`,
`GET / ""`,
`DELETE /?code=303 "c303"`,
`GET / ""`,
`DELETE /?code=307&next=301,308,303,302,304 "c307"`,
`DELETE /?code=301&next=308,303,302,304 "c307"`,
`GET /?code=308&next=303,302,304 ""`,
`GET /?code=303&next=302,304 "c307"`,
`GET /?code=302&next=304 ""`,
`GET /?code=304 ""`,
`DELETE /?code=308&next=307 "c308"`,
`DELETE /?code=307 "c308"`,
`DELETE / "c308"`,
`DELETE /?code=404 "c404"`,
}
want := strings.Join(wantSegments, "\n")
run(t, func(t *testing.T, mode testMode) {
testRedirectsByMethod(t, mode, "DELETE", deleteRedirectTests, want)
})
}
func testRedirectsByMethod(t *testing.T, mode testMode, method string, table []redirectTest, want string) {
var log struct {
sync.Mutex
bytes.Buffer
}
var ts *httptest.Server
ts = newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
log.Lock()
slurp, _ := io.ReadAll(r.Body)
fmt.Fprintf(&log.Buffer, "%s %s %q", r.Method, r.RequestURI, slurp)
if cl := r.Header.Get("Content-Length"); r.Method == "GET" && len(slurp) == 0 && (r.ContentLength != 0 || cl != "") {
fmt.Fprintf(&log.Buffer, " (but with body=%T, content-length = %v, %q)", r.Body, r.ContentLength, cl)
}
log.WriteByte('\n')
log.Unlock()
urlQuery := r.URL.Query()
if v := urlQuery.Get("code"); v != "" {
location := ts.URL
if final := urlQuery.Get("next"); final != "" {
first, rest, _ := strings.Cut(final, ",")
location = fmt.Sprintf("%s?code=%s", location, first)
if rest != "" {
location = fmt.Sprintf("%s&next=%s", location, rest)
}
}
code, _ := strconv.Atoi(v)
if code/100 == 3 {
w.Header().Set("Location", location)
}
w.WriteHeader(code)
}
})).ts
c := ts.Client()
for _, tt := range table {
content := tt.redirectBody
req, _ := NewRequest(method, ts.URL+tt.suffix, strings.NewReader(content))
req.GetBody = func() (io.ReadCloser, error) { return io.NopCloser(strings.NewReader(content)), nil }
res, err := c.Do(req)
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()
got = strings.TrimSpace(got)
want = strings.TrimSpace(want)
if got != want {
got, want, lines := removeCommonLines(got, want)
t.Errorf("Log differs after %d common lines.\n\nGot:\n%s\n\nWant:\n%s\n", lines, got, want)
}
}
func removeCommonLines(a, b string) (asuffix, bsuffix string, commonLines int) {
for {
nl := strings.IndexByte(a, '\n')
if nl < 0 {
return a, b, commonLines
}
line := a[:nl+1]
if !strings.HasPrefix(b, line) {
return a, b, commonLines
}
commonLines++
a = a[len(line):]
b = b[len(line):]
}
}
func TestClientRedirectUseResponse(t *testing.T) { run(t, testClientRedirectUseResponse) }
func testClientRedirectUseResponse(t *testing.T, mode testMode) {
const body = "Hello, world."
var ts *httptest.Server
ts = newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
if strings.Contains(r.URL.Path, "/other") {
io.WriteString(w, "wrong body")
} else {
w.Header().Set("Location", ts.URL+"/other")
w.WriteHeader(StatusFound)
io.WriteString(w, body)
}
})).ts
c := ts.Client()
c.CheckRedirect = func(req *Request, via []*Request) error {
if req.Response == nil {
t.Error("expected non-nil Request.Response")
}
return ErrUseLastResponse
}
res, err := c.Get(ts.URL)
if err != nil {
t.Fatal(err)
}
if res.StatusCode != StatusFound {
t.Errorf("status = %d; want %d", res.StatusCode, StatusFound)
}
defer res.Body.Close()
slurp, err := io.ReadAll(res.Body)
if err != nil {
t.Fatal(err)
}
if string(slurp) != body {
t.Errorf("body = %q; want %q", slurp, body)
}
}
// Issues 17773 and 49281: don't follow a 3xx if the response doesn't
// have a Location header.
func TestClientRedirectNoLocation(t *testing.T) { run(t, testClientRedirectNoLocation) }
func testClientRedirectNoLocation(t *testing.T, mode testMode) {
for _, code := range []int{301, 308} {
t.Run(fmt.Sprint(code), func(t *testing.T) {
setParallel(t)
cst := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
w.Header().Set("Foo", "Bar")
w.WriteHeader(code)
}))
res, err := cst.c.Get(cst.ts.URL)
if err != nil {
t.Fatal(err)
}
res.Body.Close()
if res.StatusCode != code {
t.Errorf("status = %d; want %d", res.StatusCode, code)
}
if got := res.Header.Get("Foo"); got != "Bar" {
t.Errorf("Foo header = %q; want Bar", got)
}
})
}
}
// Don't follow a 307/308 if we can't resent the request body.
func TestClientRedirect308NoGetBody(t *testing.T) { run(t, testClientRedirect308NoGetBody) }
func testClientRedirect308NoGetBody(t *testing.T, mode testMode) {
const fakeURL = "https://localhost:1234/" // won't be hit
ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
w.Header().Set("Location", fakeURL)
w.WriteHeader(308)
})).ts
req, err := NewRequest("POST", ts.URL, strings.NewReader("some body"))
if err != nil {
t.Fatal(err)
}
c := ts.Client()
req.GetBody = nil // so it can't rewind.
res, err := c.Do(req)
if err != nil {
t.Fatal(err)
}
res.Body.Close()
if res.StatusCode != 308 {
t.Errorf("status = %d; want %d", res.StatusCode, 308)
}
if got := res.Header.Get("Location"); got != fakeURL {
t.Errorf("Location header = %q; want %q", got, fakeURL)
}
}
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) {
defer afterTest(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) { run(t, testRedirectCookiesJar) }
func testRedirectCookiesJar(t *testing.T, mode testMode) {
var ts *httptest.Server
ts = newClientServerTest(t, mode, echoCookiesRedirectHandler).ts
c := ts.Client()
c.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) { run(t, testJarCalls, []testMode{http1Mode}) }
func testJarCalls(t *testing.T, mode testMode) {
ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
pathSuffix := r.RequestURI[1:]
if r.RequestURI == "/nosetcookie" {
return // don't 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)
}
})).ts
jar := new(RecordingJar)
c := ts.Client()
c.Jar = jar
c.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 ...any) {
j.mu.Lock()
defer j.mu.Unlock()
fmt.Fprintf(&j.log, format, args...)
}
func TestStreamingGet(t *testing.T) { run(t, testStreamingGet) }
func testStreamingGet(t *testing.T, mode testMode) {
say := make(chan string)
cst := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
w.(Flusher).Flush()
for str := range say {
w.Write([]byte(str))
w.(Flusher).Flush()
}
}))
c := cst.c
res, err := c.Get(cst.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) { run(t, testClientWrites, []testMode{http1Mode}) }
func testClientWrites(t *testing.T, mode testMode) {
ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
})).ts
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 := ts.Client()
c.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) {
run(t, testClientInsecureTransport, []testMode{https1Mode, http2Mode})
}
func testClientInsecureTransport(t *testing.T, mode testMode) {
cst := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
w.Write([]byte("Hello"))
}))
ts := cst.ts
errLog := new(strings.Builder)
ts.Config.ErrorLog = log.New(errLog, "", 0)
// TODO(bradfitz): add tests for skipping hostname checks too?
// would require a new cert for testing, and probably
// redundant with these tests.
c := ts.Client()
for _, insecure := range []bool{true, false} {
c.Transport.(*Transport).TLSClientConfig = &tls.Config{
InsecureSkipVerify: insecure,
}
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()
}
}
cst.close()
if !strings.Contains(errLog.String(), "TLS handshake error") {
t.Errorf("expected an error log message containing 'TLS handshake error'; got %q", errLog)
}
}
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 TestClientWithCorrectTLSServerName(t *testing.T) {
run(t, testClientWithCorrectTLSServerName, []testMode{https1Mode, http2Mode})
}
func testClientWithCorrectTLSServerName(t *testing.T, mode testMode) {
const serverName = "example.com"
ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
if r.TLS.ServerName != serverName {
t.Errorf("expected client to set ServerName %q, got: %q", serverName, r.TLS.ServerName)
}
})).ts
c := ts.Client()
c.Transport.(*Transport).TLSClientConfig.ServerName = serverName
if _, err := c.Get(ts.URL); err != nil {
t.Fatalf("expected successful TLS connection, got error: %v", err)
}
}
func TestClientWithIncorrectTLSServerName(t *testing.T) {
run(t, testClientWithIncorrectTLSServerName, []testMode{https1Mode, http2Mode})
}
func testClientWithIncorrectTLSServerName(t *testing.T, mode testMode) {
cst := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {}))
ts := cst.ts
errLog := new(strings.Builder)
ts.Config.ErrorLog = log.New(errLog, "", 0)
c := ts.Client()
c.Transport.(*Transport).TLSClientConfig.ServerName = "badserver"
_, 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)
}
cst.close()
if !strings.Contains(errLog.String(), "TLS handshake error") {
t.Errorf("expected an error log message containing 'TLS handshake error'; got %q", errLog)
}
}
// 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) {
run(t, testTransportUsesTLSConfigServerName, []testMode{https1Mode, http2Mode})
}
func testTransportUsesTLSConfigServerName(t *testing.T, mode testMode) {
ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
w.Write([]byte("Hello"))
})).ts
c := ts.Client()
tr := c.Transport.(*Transport)
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())
}
res, err := c.Get("https://some-other-host.tld/")
if err != nil {
t.Fatal(err)
}
res.Body.Close()
}
func TestResponseSetsTLSConnectionState(t *testing.T) {
run(t, testResponseSetsTLSConnectionState, []testMode{https1Mode})
}
func testResponseSetsTLSConnectionState(t *testing.T, mode testMode) {
ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
w.Write([]byte("Hello"))
})).ts
c := ts.Client()
tr := c.Transport.(*Transport)
tr.TLSClientConfig.CipherSuites = []uint16{tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA}
tr.TLSClientConfig.MaxVersion = tls.VersionTLS12 // to get to pick the cipher suite
tr.Dial = func(netw, addr string) (net.Conn, error) {
return net.Dial(netw, ts.Listener.Addr().String())
}
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_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA; got != want {
t.Errorf("TLS Cipher Suite = %d; want %d", got, want)
}
}
// Check that an HTTPS client can interpret a particular TLS error
// to determine that the server is speaking HTTP.
// See golang.org/issue/11111.
func TestHTTPSClientDetectsHTTPServer(t *testing.T) {
run(t, testHTTPSClientDetectsHTTPServer, []testMode{http1Mode})
}
func testHTTPSClientDetectsHTTPServer(t *testing.T, mode testMode) {
ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {})).ts
ts.Config.ErrorLog = quietLog
_, err := Get(strings.Replace(ts.URL, "http", "https", 1))
if got := err.Error(); !strings.Contains(got, "HTTP response to HTTPS client") {
t.Fatalf("error = %q; want error indicating HTTP response to HTTPS request", got)
}
}
// Verify Response.ContentLength is populated. https://golang.org/issue/4126
func TestClientHeadContentLength(t *testing.T) { run(t, testClientHeadContentLength) }
func testClientHeadContentLength(t *testing.T, mode testMode) {
cst := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
if v := r.FormValue("cl"); v != "" {
w.Header().Set("Content-Length", v)
}
}))
tests := []struct {
suffix string
want int64
}{
{"/?cl=1234", 1234},
{"/?cl=0", 0},
{"", -1},
}
for _, tt := range tests {