718 lines
20 KiB
Go
718 lines
20 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package tsweb
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import (
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"bufio"
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"context"
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"errors"
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"fmt"
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"net"
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"net/http"
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"net/http/httptest"
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"net/url"
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"strings"
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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"tailscale.com/tstest"
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"tailscale.com/util/must"
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"tailscale.com/util/vizerror"
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)
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type noopHijacker struct {
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*httptest.ResponseRecorder
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hijacked bool
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}
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func (h *noopHijacker) Hijack() (net.Conn, *bufio.ReadWriter, error) {
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// Hijack "successfully" but don't bother returning a conn.
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h.hijacked = true
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return nil, nil, nil
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}
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type handlerFunc func(http.ResponseWriter, *http.Request) error
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func (f handlerFunc) ServeHTTPReturn(w http.ResponseWriter, r *http.Request) error {
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return f(w, r)
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}
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func TestStdHandler(t *testing.T) {
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const exampleRequestID = "example-request-id"
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var (
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handlerCode = func(code int) ReturnHandler {
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return handlerFunc(func(w http.ResponseWriter, r *http.Request) error {
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w.WriteHeader(code)
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return nil
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})
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}
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handlerErr = func(code int, err error) ReturnHandler {
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return handlerFunc(func(w http.ResponseWriter, r *http.Request) error {
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if code != 0 {
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w.WriteHeader(code)
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}
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return err
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})
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}
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req = func(ctx context.Context, url string) *http.Request {
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ret, err := http.NewRequestWithContext(ctx, "GET", url, nil)
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if err != nil {
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panic(err)
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}
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return ret
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}
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testErr = errors.New("test error")
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bgCtx = context.Background()
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// canceledCtx, cancel = context.WithCancel(bgCtx)
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startTime = time.Unix(1687870000, 1234)
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)
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// cancel()
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tests := []struct {
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name string
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rh ReturnHandler
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r *http.Request
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errHandler ErrorHandlerFunc
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wantCode int
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wantLog AccessLogRecord
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wantBody string
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}{
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{
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name: "handler returns 200",
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rh: handlerCode(200),
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r: req(bgCtx, "http://example.com/"),
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wantCode: 200,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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TLS: false,
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Host: "example.com",
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Method: "GET",
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Code: 200,
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RequestURI: "/",
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},
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},
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{
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name: "handler returns 200 with request ID",
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rh: handlerCode(200),
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r: req(bgCtx, "http://example.com/"),
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wantCode: 200,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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TLS: false,
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Host: "example.com",
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Method: "GET",
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Code: 200,
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RequestURI: "/",
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},
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},
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{
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name: "handler returns 404",
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rh: handlerCode(404),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 404,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Code: 404,
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},
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},
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{
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name: "handler returns 404 with request ID",
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rh: handlerCode(404),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 404,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Code: 404,
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},
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},
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{
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name: "handler returns 404 via HTTPError",
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rh: handlerErr(0, Error(404, "not found", testErr)),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 404,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: "not found: " + testErr.Error(),
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Code: 404,
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},
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wantBody: "not found\n",
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},
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{
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name: "handler returns 404 via HTTPError with request ID",
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rh: handlerErr(0, Error(404, "not found", testErr)),
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r: req(RequestIDKey.WithValue(bgCtx, exampleRequestID), "http://example.com/foo"),
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wantCode: 404,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: "not found: " + testErr.Error(),
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Code: 404,
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RequestID: exampleRequestID,
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},
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wantBody: "not found\n" + exampleRequestID + "\n",
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},
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{
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name: "handler returns 404 with nil child error",
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rh: handlerErr(0, Error(404, "not found", nil)),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 404,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: "not found",
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Code: 404,
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},
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wantBody: "not found\n",
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},
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{
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name: "handler returns 404 with request ID and nil child error",
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rh: handlerErr(0, Error(404, "not found", nil)),
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r: req(RequestIDKey.WithValue(bgCtx, exampleRequestID), "http://example.com/foo"),
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wantCode: 404,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: "not found",
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Code: 404,
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RequestID: exampleRequestID,
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},
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wantBody: "not found\n" + exampleRequestID + "\n",
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},
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{
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name: "handler returns user-visible error",
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rh: handlerErr(0, vizerror.New("visible error")),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 500,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: "visible error",
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Code: 500,
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},
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wantBody: "visible error\n",
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},
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{
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name: "handler returns user-visible error with request ID",
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rh: handlerErr(0, vizerror.New("visible error")),
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r: req(RequestIDKey.WithValue(bgCtx, exampleRequestID), "http://example.com/foo"),
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wantCode: 500,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: "visible error",
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Code: 500,
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RequestID: exampleRequestID,
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},
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wantBody: "visible error\n" + exampleRequestID + "\n",
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},
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{
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name: "handler returns user-visible error wrapped by private error",
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rh: handlerErr(0, fmt.Errorf("private internal error: %w", vizerror.New("visible error"))),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 500,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: "visible error",
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Code: 500,
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},
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wantBody: "visible error\n",
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},
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{
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name: "handler returns user-visible error wrapped by private error with request ID",
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rh: handlerErr(0, fmt.Errorf("private internal error: %w", vizerror.New("visible error"))),
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r: req(RequestIDKey.WithValue(bgCtx, exampleRequestID), "http://example.com/foo"),
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wantCode: 500,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: "visible error",
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Code: 500,
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RequestID: exampleRequestID,
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},
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wantBody: "visible error\n" + exampleRequestID + "\n",
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},
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{
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name: "handler returns generic error",
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rh: handlerErr(0, testErr),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 500,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: testErr.Error(),
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Code: 500,
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},
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wantBody: "internal server error\n",
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},
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{
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name: "handler returns generic error with request ID",
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rh: handlerErr(0, testErr),
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r: req(RequestIDKey.WithValue(bgCtx, exampleRequestID), "http://example.com/foo"),
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wantCode: 500,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: testErr.Error(),
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Code: 500,
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RequestID: exampleRequestID,
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},
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wantBody: "internal server error\n" + exampleRequestID + "\n",
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},
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{
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name: "handler returns error after writing response",
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rh: handlerErr(200, testErr),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 200,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: testErr.Error(),
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Code: 200,
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},
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},
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{
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name: "handler returns error after writing response with request ID",
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rh: handlerErr(200, testErr),
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r: req(RequestIDKey.WithValue(bgCtx, exampleRequestID), "http://example.com/foo"),
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wantCode: 200,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: testErr.Error(),
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Code: 200,
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RequestID: exampleRequestID,
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},
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},
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{
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name: "handler returns HTTPError after writing response",
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rh: handlerErr(200, Error(404, "not found", testErr)),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 200,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Err: "not found: " + testErr.Error(),
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Code: 200,
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},
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},
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{
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name: "handler does nothing",
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rh: handlerFunc(func(http.ResponseWriter, *http.Request) error { return nil }),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 200,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Code: 200,
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},
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},
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{
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name: "handler hijacks conn",
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rh: handlerFunc(func(w http.ResponseWriter, r *http.Request) error {
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_, _, err := w.(http.Hijacker).Hijack()
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if err != nil {
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t.Errorf("couldn't hijack: %v", err)
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}
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return err
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}),
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r: req(bgCtx, "http://example.com/foo"),
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wantCode: 200,
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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Host: "example.com",
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Method: "GET",
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RequestURI: "/foo",
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Code: 101,
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},
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},
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{
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name: "error handler gets run",
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rh: handlerErr(0, Error(404, "not found", nil)), // status code changed in errHandler
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r: req(bgCtx, "http://example.com/"),
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wantCode: 200,
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errHandler: func(w http.ResponseWriter, r *http.Request, e HTTPError) {
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http.Error(w, e.Msg, 200)
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},
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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TLS: false,
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Host: "example.com",
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Method: "GET",
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Code: 404,
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Err: "not found",
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RequestURI: "/",
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},
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wantBody: "not found\n",
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},
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{
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name: "error handler gets run with request ID",
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rh: handlerErr(0, Error(404, "not found", nil)), // status code changed in errHandler
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r: req(RequestIDKey.WithValue(bgCtx, exampleRequestID), "http://example.com/"),
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wantCode: 200,
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errHandler: func(w http.ResponseWriter, r *http.Request, e HTTPError) {
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requestID := RequestIDFromContext(r.Context())
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http.Error(w, fmt.Sprintf("%s with request ID %s", e.Msg, requestID), 200)
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},
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wantLog: AccessLogRecord{
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When: startTime,
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Seconds: 1.0,
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Proto: "HTTP/1.1",
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TLS: false,
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Host: "example.com",
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Method: "GET",
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Code: 404,
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Err: "not found",
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RequestURI: "/",
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RequestID: exampleRequestID,
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},
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wantBody: "not found with request ID " + exampleRequestID + "\n",
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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var logs []AccessLogRecord
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logf := func(fmt string, args ...any) {
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if fmt == "%s" {
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logs = append(logs, args[0].(AccessLogRecord))
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}
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t.Logf(fmt, args...)
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}
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clock := tstest.NewClock(tstest.ClockOpts{
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Start: startTime,
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Step: time.Second,
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})
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rec := noopHijacker{httptest.NewRecorder(), false}
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h := StdHandler(test.rh, HandlerOptions{Logf: logf, Now: clock.Now, OnError: test.errHandler})
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h.ServeHTTP(&rec, test.r)
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res := rec.Result()
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if res.StatusCode != test.wantCode {
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t.Errorf("HTTP code = %v, want %v", res.StatusCode, test.wantCode)
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}
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if len(logs) != 1 {
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t.Errorf("handler didn't write a request log")
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return
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}
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errTransform := cmp.Transformer("err", func(e error) string {
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if e == nil {
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return ""
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}
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return e.Error()
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})
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if diff := cmp.Diff(logs[0], test.wantLog, errTransform); diff != "" {
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t.Errorf("handler wrote incorrect request log (-got+want):\n%s", diff)
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}
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if diff := cmp.Diff(rec.Body.String(), test.wantBody); diff != "" {
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t.Errorf("handler wrote incorrect body (-got+want):\n%s", diff)
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}
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})
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}
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}
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func BenchmarkLogNot200(b *testing.B) {
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b.ReportAllocs()
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rh := handlerFunc(func(w http.ResponseWriter, r *http.Request) error {
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// Implicit 200 OK.
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return nil
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})
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h := StdHandler(rh, HandlerOptions{QuietLoggingIfSuccessful: true})
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req := httptest.NewRequest("GET", "/", nil)
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rw := new(httptest.ResponseRecorder)
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for range b.N {
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*rw = httptest.ResponseRecorder{}
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h.ServeHTTP(rw, req)
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}
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}
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|
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func BenchmarkLog(b *testing.B) {
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b.ReportAllocs()
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rh := handlerFunc(func(w http.ResponseWriter, r *http.Request) error {
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// Implicit 200 OK.
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return nil
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})
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h := StdHandler(rh, HandlerOptions{})
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req := httptest.NewRequest("GET", "/", nil)
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rw := new(httptest.ResponseRecorder)
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for range b.N {
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*rw = httptest.ResponseRecorder{}
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h.ServeHTTP(rw, req)
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}
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}
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func TestHTTPError_Unwrap(t *testing.T) {
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wrappedErr := fmt.Errorf("wrapped")
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err := Error(404, "not found", wrappedErr)
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if got := errors.Unwrap(err); got != wrappedErr {
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t.Errorf("HTTPError.Unwrap() = %v, want %v", got, wrappedErr)
|
|
}
|
|
}
|
|
|
|
func TestAcceptsEncoding(t *testing.T) {
|
|
tests := []struct {
|
|
in, enc string
|
|
want bool
|
|
}{
|
|
{"", "gzip", false},
|
|
{"gzip", "gzip", true},
|
|
{"foo,gzip", "gzip", true},
|
|
{"foo, gzip", "gzip", true},
|
|
{"foo, gzip ", "gzip", true},
|
|
{"gzip, foo ", "gzip", true},
|
|
{"gzip, foo ", "br", false},
|
|
{"gzip, foo ", "fo", false},
|
|
{"gzip;q=1.2, foo ", "gzip", true},
|
|
{" gzip;q=1.2, foo ", "gzip", true},
|
|
}
|
|
for i, tt := range tests {
|
|
h := make(http.Header)
|
|
if tt.in != "" {
|
|
h.Set("Accept-Encoding", tt.in)
|
|
}
|
|
got := AcceptsEncoding(&http.Request{Header: h}, tt.enc)
|
|
if got != tt.want {
|
|
t.Errorf("%d. got %v; want %v", i, got, tt.want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestPort80Handler(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
h *Port80Handler
|
|
req string
|
|
wantLoc string
|
|
}{
|
|
{
|
|
name: "no_fqdn",
|
|
h: &Port80Handler{},
|
|
req: "GET / HTTP/1.1\r\nHost: foo.com\r\n\r\n",
|
|
wantLoc: "https://foo.com/",
|
|
},
|
|
{
|
|
name: "fqdn_and_path",
|
|
h: &Port80Handler{FQDN: "bar.com"},
|
|
req: "GET /path HTTP/1.1\r\nHost: foo.com\r\n\r\n",
|
|
wantLoc: "https://bar.com/path",
|
|
},
|
|
{
|
|
name: "path_and_query_string",
|
|
h: &Port80Handler{FQDN: "baz.com"},
|
|
req: "GET /path?a=b HTTP/1.1\r\nHost: foo.com\r\n\r\n",
|
|
wantLoc: "https://baz.com/path?a=b",
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
r, _ := http.ReadRequest(bufio.NewReader(strings.NewReader(tt.req)))
|
|
rec := httptest.NewRecorder()
|
|
tt.h.ServeHTTP(rec, r)
|
|
got := rec.Result()
|
|
if got, want := got.StatusCode, 302; got != want {
|
|
t.Errorf("got status code %v; want %v", got, want)
|
|
}
|
|
if got, want := got.Header.Get("Location"), "https://foo.com/"; got != tt.wantLoc {
|
|
t.Errorf("Location = %q; want %q", got, want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestCleanRedirectURL(t *testing.T) {
|
|
tailscaleHost := []string{"tailscale.com"}
|
|
tailscaleAndOtherHost := []string{"microsoft.com", "tailscale.com"}
|
|
localHost := []string{"127.0.0.1", "localhost"}
|
|
myServer := []string{"myserver"}
|
|
cases := []struct {
|
|
url string
|
|
hosts []string
|
|
want string
|
|
wantErr bool
|
|
}{
|
|
{"http://tailscale.com/foo", tailscaleHost, "http://tailscale.com/foo", false},
|
|
{"http://tailscale.com/foo", tailscaleAndOtherHost, "http://tailscale.com/foo", false},
|
|
{"http://microsoft.com/foo", tailscaleAndOtherHost, "http://microsoft.com/foo", false},
|
|
{"https://tailscale.com/foo", tailscaleHost, "https://tailscale.com/foo", false},
|
|
{"/foo", tailscaleHost, "/foo", false},
|
|
{"//tailscale.com/foo", tailscaleHost, "//tailscale.com/foo", false},
|
|
{"/a/foobar", tailscaleHost, "/a/foobar", false},
|
|
{"http://127.0.0.1/a/foobar", localHost, "http://127.0.0.1/a/foobar", false},
|
|
{"http://127.0.0.1:123/a/foobar", localHost, "http://127.0.0.1:123/a/foobar", false},
|
|
{"http://127.0.0.1:31544/a/foobar", localHost, "http://127.0.0.1:31544/a/foobar", false},
|
|
{"http://localhost/a/foobar", localHost, "http://localhost/a/foobar", false},
|
|
{"http://localhost:123/a/foobar", localHost, "http://localhost:123/a/foobar", false},
|
|
{"http://localhost:31544/a/foobar", localHost, "http://localhost:31544/a/foobar", false},
|
|
{"http://myserver/a/foobar", myServer, "http://myserver/a/foobar", false},
|
|
{"http://myserver:123/a/foobar", myServer, "http://myserver:123/a/foobar", false},
|
|
{"http://myserver:31544/a/foobar", myServer, "http://myserver:31544/a/foobar", false},
|
|
{"http://evil.com/foo", tailscaleHost, "", true},
|
|
{"//evil.com", tailscaleHost, "", true},
|
|
{"\\\\evil.com", tailscaleHost, "", true},
|
|
{"javascript:alert(123)", tailscaleHost, "", true},
|
|
{"file:///", tailscaleHost, "", true},
|
|
{"file:////SERVER/directory/goats.txt", tailscaleHost, "", true},
|
|
{"https://google.com", tailscaleHost, "", true},
|
|
{"", tailscaleHost, "", false},
|
|
{"\"\"", tailscaleHost, "", true},
|
|
{"https://tailscale.com@goats.com:8443", tailscaleHost, "", true},
|
|
{"https://tailscale.com:8443@goats.com:8443", tailscaleHost, "", true},
|
|
{"HttP://tailscale.com", tailscaleHost, "http://tailscale.com", false},
|
|
{"http://TaIlScAlE.CoM/spongebob", tailscaleHost, "http://TaIlScAlE.CoM/spongebob", false},
|
|
{"ftp://tailscale.com", tailscaleHost, "", true},
|
|
{"https:/evil.com", tailscaleHost, "", true}, // regression test for tailscale/corp#892
|
|
{"%2Fa%2F44869c061701", tailscaleHost, "/a/44869c061701", false}, // regression test for tailscale/corp#13288
|
|
{"https%3A%2Ftailscale.com", tailscaleHost, "", true}, // escaped colon-single-slash malformed URL
|
|
{"", nil, "", false},
|
|
}
|
|
|
|
for _, tc := range cases {
|
|
gotURL, err := CleanRedirectURL(tc.url, tc.hosts)
|
|
if err != nil {
|
|
if !tc.wantErr {
|
|
t.Errorf("CleanRedirectURL(%q, %v) got error: %v", tc.url, tc.hosts, err)
|
|
}
|
|
} else {
|
|
if tc.wantErr {
|
|
t.Errorf("CleanRedirectURL(%q, %v) got %q, want an error", tc.url, tc.hosts, gotURL)
|
|
}
|
|
if got := gotURL.String(); got != tc.want {
|
|
t.Errorf("CleanRedirectURL(%q, %v) = %q, want %q", tc.url, tc.hosts, got, tc.want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBucket(t *testing.T) {
|
|
tcs := []struct {
|
|
path string
|
|
want string
|
|
}{
|
|
{"/map", "/map"},
|
|
{"/key?v=63", "/key"},
|
|
{"/map/a87e865a9d1c7", "/map/…"},
|
|
{"/machine/37fc1acb57f256b69b0d76749d814d91c68b241057c6b127fee3df37e4af111e", "/machine/…"},
|
|
{"/machine/37fc1acb57f256b69b0d76749d814d91c68b241057c6b127fee3df37e4af111e/map", "/machine/…/map"},
|
|
{"/api/v2/tailnet/jeremiah@squish.com/devices", "/api/v2/tailnet/…/devices"},
|
|
{"/machine/ssh/wait/5227109621243650/to/7111899293970143/a/a9e4e04cc01b", "/machine/ssh/wait/…/to/…/a/…"},
|
|
{"/a/831a4bf39856?refreshed=true", "/a/…"},
|
|
{"/c2n/nxaaa1CNTRL", "/c2n/…"},
|
|
{"/api/v2/tailnet/blueberries.com/keys/kxaDK21CNTRL", "/api/v2/tailnet/…/keys/…"},
|
|
{"/api/v2/tailnet/bloop@passkey/devices", "/api/v2/tailnet/…/devices"},
|
|
}
|
|
|
|
for _, tc := range tcs {
|
|
t.Run(tc.path, func(t *testing.T) {
|
|
o := BucketedStatsOptions{}
|
|
bucket := (&o).bucketForRequest(&http.Request{
|
|
URL: must.Get(url.Parse(tc.path)),
|
|
})
|
|
|
|
if bucket != tc.want {
|
|
t.Errorf("bucket for %q was %q, want %q", tc.path, bucket, tc.want)
|
|
}
|
|
})
|
|
}
|
|
}
|