mirror of
https://github.com/cloudflare/cloudflared.git
synced 2025-07-27 20:39:57 +00:00
TUN-5393: Content-length is no longer a control header for non-h2mux transports
- Refactors some h2mux specific logic from connection/header.go to connection/h2mux_header.go - Do the same for the unit tests - Add a non-h2mux "is control response header" function (we don't need one for the request flow) - In that new function, do not consider "content-length" as a control header - Use that function in the non-h2mux flow for response (and it will be used also in origintunneld)
This commit is contained in:
Nuno Diegues
@@ -2,441 +2,14 @@ package connection
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import (
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"fmt"
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"math/rand"
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"net/http"
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"net/url"
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"reflect"
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"regexp"
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"sort"
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"strings"
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"testing"
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"testing/quick"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/cloudflare/cloudflared/h2mux"
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)
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type ByName []h2mux.Header
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func (a ByName) Len() int { return len(a) }
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func (a ByName) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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func (a ByName) Less(i, j int) bool {
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if a[i].Name == a[j].Name {
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return a[i].Value < a[j].Value
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}
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return a[i].Name < a[j].Name
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}
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func TestH2RequestHeadersToH1Request_RegularHeaders(t *testing.T) {
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request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
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assert.NoError(t, err)
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mockHeaders := http.Header{
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"Mock header 1": {"Mock value 1"},
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"Mock header 2": {"Mock value 2"},
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}
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headersConversionErr := H2RequestHeadersToH1Request(createSerializedHeaders(RequestUserHeaders, mockHeaders), request)
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assert.True(t, reflect.DeepEqual(mockHeaders, request.Header))
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assert.NoError(t, headersConversionErr)
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}
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func createSerializedHeaders(headersField string, headers http.Header) []h2mux.Header {
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return []h2mux.Header{{
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Name: headersField,
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Value: SerializeHeaders(headers),
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}}
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}
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func TestH2RequestHeadersToH1Request_NoHeaders(t *testing.T) {
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request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
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assert.NoError(t, err)
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emptyHeaders := make(http.Header)
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headersConversionErr := H2RequestHeadersToH1Request(
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[]h2mux.Header{{
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Name: RequestUserHeaders,
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Value: SerializeHeaders(emptyHeaders),
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}},
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request,
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)
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assert.True(t, reflect.DeepEqual(emptyHeaders, request.Header))
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assert.NoError(t, headersConversionErr)
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}
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func TestH2RequestHeadersToH1Request_InvalidHostPath(t *testing.T) {
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request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
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assert.NoError(t, err)
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mockRequestHeaders := []h2mux.Header{
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{Name: ":path", Value: "//bad_path/"},
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{Name: RequestUserHeaders, Value: SerializeHeaders(http.Header{"Mock header": {"Mock value"}})},
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}
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headersConversionErr := H2RequestHeadersToH1Request(mockRequestHeaders, request)
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assert.Equal(t, http.Header{
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"Mock header": []string{"Mock value"},
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}, request.Header)
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assert.Equal(t, "http://example.com//bad_path/", request.URL.String())
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assert.NoError(t, headersConversionErr)
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}
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func TestH2RequestHeadersToH1Request_HostPathWithQuery(t *testing.T) {
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request, err := http.NewRequest(http.MethodGet, "http://example.com/", nil)
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assert.NoError(t, err)
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mockRequestHeaders := []h2mux.Header{
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{Name: ":path", Value: "/?query=mock%20value"},
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{Name: RequestUserHeaders, Value: SerializeHeaders(http.Header{"Mock header": {"Mock value"}})},
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}
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headersConversionErr := H2RequestHeadersToH1Request(mockRequestHeaders, request)
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assert.Equal(t, http.Header{
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"Mock header": []string{"Mock value"},
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}, request.Header)
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assert.Equal(t, "http://example.com/?query=mock%20value", request.URL.String())
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assert.NoError(t, headersConversionErr)
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}
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func TestH2RequestHeadersToH1Request_HostPathWithURLEncoding(t *testing.T) {
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request, err := http.NewRequest(http.MethodGet, "http://example.com/", nil)
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assert.NoError(t, err)
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mockRequestHeaders := []h2mux.Header{
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{Name: ":path", Value: "/mock%20path"},
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{Name: RequestUserHeaders, Value: SerializeHeaders(http.Header{"Mock header": {"Mock value"}})},
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}
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headersConversionErr := H2RequestHeadersToH1Request(mockRequestHeaders, request)
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assert.Equal(t, http.Header{
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"Mock header": []string{"Mock value"},
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}, request.Header)
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assert.Equal(t, "http://example.com/mock%20path", request.URL.String())
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assert.NoError(t, headersConversionErr)
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}
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func TestH2RequestHeadersToH1Request_WeirdURLs(t *testing.T) {
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type testCase struct {
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path string
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want string
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}
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testCases := []testCase{
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{
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path: "",
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want: "",
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},
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{
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path: "/",
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want: "/",
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},
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{
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path: "//",
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want: "//",
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},
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{
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path: "/test",
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want: "/test",
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},
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{
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path: "//test",
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want: "//test",
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},
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{
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// https://github.com/cloudflare/cloudflared/issues/81
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path: "//test/",
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want: "//test/",
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},
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{
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path: "/%2Ftest",
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want: "/%2Ftest",
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},
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{
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path: "//%20test",
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want: "//%20test",
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},
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{
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// https://github.com/cloudflare/cloudflared/issues/124
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path: "/test?get=somthing%20a",
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want: "/test?get=somthing%20a",
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},
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{
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path: "/%20",
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want: "/%20",
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},
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{
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// stdlib's EscapedPath() will always percent-encode ' '
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path: "/ ",
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want: "/%20",
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},
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{
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path: "/ a ",
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want: "/%20a%20",
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},
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{
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path: "/a%20b",
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want: "/a%20b",
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},
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{
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path: "/foo/bar;param?query#frag",
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want: "/foo/bar;param?query#frag",
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},
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{
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// stdlib's EscapedPath() will always percent-encode non-ASCII chars
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path: "/a␠b",
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want: "/a%E2%90%A0b",
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},
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{
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path: "/a-umlaut-ä",
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want: "/a-umlaut-%C3%A4",
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},
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{
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path: "/a-umlaut-%C3%A4",
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want: "/a-umlaut-%C3%A4",
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},
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{
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path: "/a-umlaut-%c3%a4",
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want: "/a-umlaut-%c3%a4",
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},
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{
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// here the second '#' is treated as part of the fragment
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path: "/a#b#c",
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want: "/a#b%23c",
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},
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{
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path: "/a#b␠c",
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want: "/a#b%E2%90%A0c",
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},
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{
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path: "/a#b%20c",
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want: "/a#b%20c",
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},
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{
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path: "/a#b c",
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want: "/a#b%20c",
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},
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{
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// stdlib's EscapedPath() will always percent-encode '\'
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path: "/\\",
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want: "/%5C",
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},
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{
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path: "/a\\",
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want: "/a%5C",
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},
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{
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path: "/a,b.c.",
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want: "/a,b.c.",
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},
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{
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path: "/.",
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want: "/.",
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},
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{
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// stdlib's EscapedPath() will always percent-encode '`'
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path: "/a`",
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want: "/a%60",
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},
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{
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path: "/a[0]",
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want: "/a[0]",
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},
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{
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path: "/?a[0]=5 &b[]=",
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want: "/?a[0]=5 &b[]=",
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},
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{
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path: "/?a=%22b%20%22",
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want: "/?a=%22b%20%22",
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},
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}
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for index, testCase := range testCases {
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requestURL := "https://example.com"
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request, err := http.NewRequest(http.MethodGet, requestURL, nil)
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assert.NoError(t, err)
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mockRequestHeaders := []h2mux.Header{
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{Name: ":path", Value: testCase.path},
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{Name: RequestUserHeaders, Value: SerializeHeaders(http.Header{"Mock header": {"Mock value"}})},
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}
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headersConversionErr := H2RequestHeadersToH1Request(mockRequestHeaders, request)
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assert.NoError(t, headersConversionErr)
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assert.Equal(t,
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http.Header{
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"Mock header": []string{"Mock value"},
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},
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request.Header)
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assert.Equal(t,
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"https://example.com"+testCase.want,
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request.URL.String(),
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"Failed URL index: %v %#v", index, testCase)
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}
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}
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func TestH2RequestHeadersToH1Request_QuickCheck(t *testing.T) {
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config := &quick.Config{
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Values: func(args []reflect.Value, rand *rand.Rand) {
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args[0] = reflect.ValueOf(randomHTTP2Path(t, rand))
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},
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}
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type testOrigin struct {
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url string
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expectedScheme string
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expectedBasePath string
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}
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testOrigins := []testOrigin{
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{
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url: "http://origin.hostname.example.com:8080",
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expectedScheme: "http",
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expectedBasePath: "http://origin.hostname.example.com:8080",
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},
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{
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url: "http://origin.hostname.example.com:8080/",
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expectedScheme: "http",
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expectedBasePath: "http://origin.hostname.example.com:8080",
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},
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{
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url: "http://origin.hostname.example.com:8080/api",
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expectedScheme: "http",
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expectedBasePath: "http://origin.hostname.example.com:8080/api",
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},
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{
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url: "http://origin.hostname.example.com:8080/api/",
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expectedScheme: "http",
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expectedBasePath: "http://origin.hostname.example.com:8080/api",
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},
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{
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url: "https://origin.hostname.example.com:8080/api",
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expectedScheme: "https",
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expectedBasePath: "https://origin.hostname.example.com:8080/api",
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},
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}
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// use multiple schemes to demonstrate that the URL is based on the
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// origin's scheme, not the :scheme header
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for _, testScheme := range []string{"http", "https"} {
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for _, testOrigin := range testOrigins {
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assertion := func(testPath string) bool {
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const expectedMethod = "POST"
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const expectedHostname = "request.hostname.example.com"
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h2 := []h2mux.Header{
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{Name: ":method", Value: expectedMethod},
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{Name: ":scheme", Value: testScheme},
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{Name: ":authority", Value: expectedHostname},
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{Name: ":path", Value: testPath},
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{Name: RequestUserHeaders, Value: ""},
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}
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h1, err := http.NewRequest("GET", testOrigin.url, nil)
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require.NoError(t, err)
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err = H2RequestHeadersToH1Request(h2, h1)
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return assert.NoError(t, err) &&
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assert.Equal(t, expectedMethod, h1.Method) &&
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assert.Equal(t, expectedHostname, h1.Host) &&
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assert.Equal(t, testOrigin.expectedScheme, h1.URL.Scheme) &&
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assert.Equal(t, testOrigin.expectedBasePath+testPath, h1.URL.String())
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}
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err := quick.Check(assertion, config)
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assert.NoError(t, err)
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}
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}
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}
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func randomASCIIPrintableChar(rand *rand.Rand) int {
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// smallest printable ASCII char is 32, largest is 126
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const startPrintable = 32
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const endPrintable = 127
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return startPrintable + rand.Intn(endPrintable-startPrintable)
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}
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// randomASCIIText generates an ASCII string, some of whose characters may be
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// percent-encoded. Its "logical length" (ignoring percent-encoding) is
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// between 1 and `maxLength`.
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func randomASCIIText(rand *rand.Rand, minLength int, maxLength int) string {
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length := minLength + rand.Intn(maxLength)
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var result strings.Builder
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for i := 0; i < length; i++ {
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c := randomASCIIPrintableChar(rand)
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// 1/4 chance of using percent encoding when not necessary
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if c == '%' || rand.Intn(4) == 0 {
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result.WriteString(fmt.Sprintf("%%%02X", c))
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} else {
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result.WriteByte(byte(c))
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}
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}
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return result.String()
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}
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|
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// Calls `randomASCIIText` and ensures the result is a valid URL path,
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// i.e. one that can pass unchanged through url.URL.String()
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func randomHTTP1Path(t *testing.T, rand *rand.Rand, minLength int, maxLength int) string {
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text := randomASCIIText(rand, minLength, maxLength)
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re, err := regexp.Compile("[^/;,]*")
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require.NoError(t, err)
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return "/" + re.ReplaceAllStringFunc(text, url.PathEscape)
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}
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// Calls `randomASCIIText` and ensures the result is a valid URL query,
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// i.e. one that can pass unchanged through url.URL.String()
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func randomHTTP1Query(rand *rand.Rand, minLength int, maxLength int) string {
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text := randomASCIIText(rand, minLength, maxLength)
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return "?" + strings.ReplaceAll(text, "#", "%23")
|
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}
|
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|
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// Calls `randomASCIIText` and ensures the result is a valid URL fragment,
|
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// i.e. one that can pass unchanged through url.URL.String()
|
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func randomHTTP1Fragment(t *testing.T, rand *rand.Rand, minLength int, maxLength int) string {
|
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text := randomASCIIText(rand, minLength, maxLength)
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u, err := url.Parse("#" + text)
|
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require.NoError(t, err)
|
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return u.String()
|
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}
|
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|
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// Assemble a random :path pseudoheader that is legal by Go stdlib standards
|
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// (i.e. all characters will satisfy "net/url".shouldEscape for their respective locations)
|
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func randomHTTP2Path(t *testing.T, rand *rand.Rand) string {
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result := randomHTTP1Path(t, rand, 1, 64)
|
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if rand.Intn(2) == 1 {
|
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result += randomHTTP1Query(rand, 1, 32)
|
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}
|
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if rand.Intn(2) == 1 {
|
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result += randomHTTP1Fragment(t, rand, 1, 16)
|
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}
|
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return result
|
||||
}
|
||||
|
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func stdlibHeaderToH2muxHeader(headers http.Header) (h2muxHeaders []h2mux.Header) {
|
||||
for name, values := range headers {
|
||||
for _, value := range values {
|
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h2muxHeaders = append(h2muxHeaders, h2mux.Header{Name: name, Value: value})
|
||||
}
|
||||
}
|
||||
|
||||
return h2muxHeaders
|
||||
}
|
||||
|
||||
func TestSerializeHeaders(t *testing.T) {
|
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request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
|
||||
assert.NoError(t, err)
|
||||
@@ -511,70 +84,13 @@ func TestDeserializeMalformed(t *testing.T) {
|
||||
}
|
||||
}
|
||||
|
||||
func TestParseRequestHeaders(t *testing.T) {
|
||||
mockUserHeadersToSerialize := http.Header{
|
||||
"Mock-Header-One": {"1", "1.5"},
|
||||
"Mock-Header-Two": {"2"},
|
||||
"Mock-Header-Three": {"3"},
|
||||
}
|
||||
|
||||
mockHeaders := []h2mux.Header{
|
||||
{Name: "One", Value: "1"}, // will be dropped
|
||||
{Name: "Cf-Two", Value: "cf-value-1"},
|
||||
{Name: "Cf-Two", Value: "cf-value-2"},
|
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{Name: RequestUserHeaders, Value: SerializeHeaders(mockUserHeadersToSerialize)},
|
||||
}
|
||||
|
||||
expectedHeaders := []h2mux.Header{
|
||||
{Name: "Cf-Two", Value: "cf-value-1"},
|
||||
{Name: "Cf-Two", Value: "cf-value-2"},
|
||||
{Name: "Mock-Header-One", Value: "1"},
|
||||
{Name: "Mock-Header-One", Value: "1.5"},
|
||||
{Name: "Mock-Header-Two", Value: "2"},
|
||||
{Name: "Mock-Header-Three", Value: "3"},
|
||||
}
|
||||
h1 := &http.Request{
|
||||
Header: make(http.Header),
|
||||
}
|
||||
err := H2RequestHeadersToH1Request(mockHeaders, h1)
|
||||
assert.NoError(t, err)
|
||||
assert.ElementsMatch(t, expectedHeaders, stdlibHeaderToH2muxHeader(h1.Header))
|
||||
}
|
||||
|
||||
func TestIsControlRequestHeader(t *testing.T) {
|
||||
controlRequestHeaders := []string{
|
||||
// Anything that begins with cf-
|
||||
"cf-sample-header",
|
||||
|
||||
// Any http2 pseudoheader
|
||||
":sample-pseudo-header",
|
||||
|
||||
// content-length is a special case, it has to be there
|
||||
// for some requests to work (per the HTTP2 spec)
|
||||
"content-length",
|
||||
|
||||
// Websocket request headers
|
||||
"connection",
|
||||
"upgrade",
|
||||
}
|
||||
|
||||
for _, header := range controlRequestHeaders {
|
||||
assert.True(t, IsControlRequestHeader(header))
|
||||
}
|
||||
}
|
||||
|
||||
func TestIsControlResponseHeader(t *testing.T) {
|
||||
controlResponseHeaders := []string{
|
||||
// Anything that begins with cf-int- or cf-cloudflared-
|
||||
"cf-int-sample-header",
|
||||
"cf-cloudflared-sample-header",
|
||||
|
||||
// Any http2 pseudoheader
|
||||
":sample-pseudo-header",
|
||||
|
||||
// content-length is a special case, it has to be there
|
||||
// for some requests to work (per the HTTP2 spec)
|
||||
"content-length",
|
||||
}
|
||||
|
||||
for _, header := range controlResponseHeaders {
|
||||
@@ -582,17 +98,6 @@ func TestIsControlResponseHeader(t *testing.T) {
|
||||
}
|
||||
}
|
||||
|
||||
func TestIsNotControlRequestHeader(t *testing.T) {
|
||||
notControlRequestHeaders := []string{
|
||||
"mock-header",
|
||||
"another-sample-header",
|
||||
}
|
||||
|
||||
for _, header := range notControlRequestHeaders {
|
||||
assert.False(t, IsControlRequestHeader(header))
|
||||
}
|
||||
}
|
||||
|
||||
func TestIsNotControlResponseHeader(t *testing.T) {
|
||||
notControlResponseHeaders := []string{
|
||||
"mock-header",
|
||||
@@ -606,112 +111,3 @@ func TestIsNotControlResponseHeader(t *testing.T) {
|
||||
assert.False(t, IsControlResponseHeader(header))
|
||||
}
|
||||
}
|
||||
|
||||
func TestH1ResponseToH2ResponseHeaders(t *testing.T) {
|
||||
mockHeaders := http.Header{
|
||||
"User-header-one": {""},
|
||||
"User-header-two": {"1", "2"},
|
||||
"cf-header": {"cf-value"},
|
||||
"cf-int-header": {"cf-int-value"},
|
||||
"cf-cloudflared-header": {"cf-cloudflared-value"},
|
||||
"Content-Length": {"123"},
|
||||
}
|
||||
mockResponse := http.Response{
|
||||
StatusCode: 200,
|
||||
Header: mockHeaders,
|
||||
}
|
||||
|
||||
headers := H1ResponseToH2ResponseHeaders(mockResponse.StatusCode, mockResponse.Header)
|
||||
|
||||
serializedHeadersIndex := -1
|
||||
for i, header := range headers {
|
||||
if header.Name == ResponseUserHeaders {
|
||||
serializedHeadersIndex = i
|
||||
break
|
||||
}
|
||||
}
|
||||
assert.NotEqual(t, -1, serializedHeadersIndex)
|
||||
actualControlHeaders := append(
|
||||
headers[:serializedHeadersIndex],
|
||||
headers[serializedHeadersIndex+1:]...,
|
||||
)
|
||||
expectedControlHeaders := []h2mux.Header{
|
||||
{Name: ":status", Value: "200"},
|
||||
{Name: "content-length", Value: "123"},
|
||||
}
|
||||
|
||||
assert.ElementsMatch(t, expectedControlHeaders, actualControlHeaders)
|
||||
|
||||
actualUserHeaders, err := DeserializeHeaders(headers[serializedHeadersIndex].Value)
|
||||
expectedUserHeaders := []h2mux.Header{
|
||||
{Name: "User-header-one", Value: ""},
|
||||
{Name: "User-header-two", Value: "1"},
|
||||
{Name: "User-header-two", Value: "2"},
|
||||
{Name: "cf-header", Value: "cf-value"},
|
||||
}
|
||||
assert.NoError(t, err)
|
||||
assert.ElementsMatch(t, expectedUserHeaders, actualUserHeaders)
|
||||
}
|
||||
|
||||
// The purpose of this test is to check that our code and the http.Header
|
||||
// implementation don't throw validation errors about header size
|
||||
func TestHeaderSize(t *testing.T) {
|
||||
largeValue := randSeq(5 * 1024 * 1024) // 5Mb
|
||||
largeHeaders := http.Header{
|
||||
"User-header": {largeValue},
|
||||
}
|
||||
mockResponse := http.Response{
|
||||
StatusCode: 200,
|
||||
Header: largeHeaders,
|
||||
}
|
||||
|
||||
serializedHeaders := H1ResponseToH2ResponseHeaders(mockResponse.StatusCode, mockResponse.Header)
|
||||
request, err := http.NewRequest(http.MethodGet, "https://example.com/", nil)
|
||||
assert.NoError(t, err)
|
||||
for _, header := range serializedHeaders {
|
||||
request.Header.Set(header.Name, header.Value)
|
||||
}
|
||||
|
||||
for _, header := range serializedHeaders {
|
||||
if header.Name != ResponseUserHeaders {
|
||||
continue
|
||||
}
|
||||
|
||||
deserializedHeaders, err := DeserializeHeaders(header.Value)
|
||||
assert.NoError(t, err)
|
||||
assert.Equal(t, largeValue, deserializedHeaders[0].Value)
|
||||
}
|
||||
}
|
||||
|
||||
func randSeq(n int) string {
|
||||
randomizer := rand.New(rand.NewSource(17))
|
||||
var letters = []rune(":;,+/=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
|
||||
b := make([]rune, n)
|
||||
for i := range b {
|
||||
b[i] = letters[randomizer.Intn(len(letters))]
|
||||
}
|
||||
return string(b)
|
||||
}
|
||||
|
||||
func BenchmarkH1ResponseToH2ResponseHeaders(b *testing.B) {
|
||||
ser := "eC1mb3J3YXJkZWQtcHJvdG8:aHR0cHM;dXBncmFkZS1pbnNlY3VyZS1yZXF1ZXN0cw:MQ;YWNjZXB0LWxhbmd1YWdl:ZW4tVVMsZW47cT0wLjkscnU7cT0wLjg;YWNjZXB0LWVuY29kaW5n:Z3ppcA;eC1mb3J3YXJkZWQtZm9y:MTczLjI0NS42MC42;dXNlci1hZ2VudA:TW96aWxsYS81LjAgKE1hY2ludG9zaDsgSW50ZWwgTWFjIE9TIFggMTBfMTRfNikgQXBwbGVXZWJLaXQvNTM3LjM2IChLSFRNTCwgbGlrZSBHZWNrbykgQ2hyb21lLzg0LjAuNDE0Ny44OSBTYWZhcmkvNTM3LjM2;c2VjLWZldGNoLW1vZGU:bmF2aWdhdGU;Y2RuLWxvb3A:Y2xvdWRmbGFyZQ;c2VjLWZldGNoLWRlc3Q:ZG9jdW1lbnQ;c2VjLWZldGNoLXVzZXI:PzE;c2VjLWZldGNoLXNpdGU:bm9uZQ;Y29va2ll:X19jZmR1aWQ9ZGNkOWZjOGNjNWMxMzE0NTMyYTFkMjhlZDEyOWRhOTYwMTU2OTk1MTYzNDsgX19jZl9ibT1mYzY2MzMzYzAzZmM0MWFiZTZmOWEyYzI2ZDUwOTA0YzIxYzZhMTQ2LTE1OTU2MjIzNDEtMTgwMC1BZTVzS2pIU2NiWGVFM05mMUhrTlNQMG1tMHBLc2pQWkloVnM1Z2g1SkNHQkFhS1UxVDB2b003alBGN3FjMHVSR2NjZGcrWHdhL1EzbTJhQzdDVU4xZ2M9;YWNjZXB0:dGV4dC9odG1sLGFwcGxpY2F0aW9uL3hodG1sK3htbCxhcHBsaWNhdGlvbi94bWw7cT0wLjksaW1hZ2Uvd2VicCxpbWFnZS9hcG5nLCovKjtxPTAuOCxhcHBsaWNhdGlvbi9zaWduZWQtZXhjaGFuZ2U7dj1iMztxPTAuOQ"
|
||||
h2, _ := DeserializeHeaders(ser)
|
||||
h1 := make(http.Header)
|
||||
for _, header := range h2 {
|
||||
h1.Add(header.Name, header.Value)
|
||||
}
|
||||
h1.Add("Content-Length", "200")
|
||||
h1.Add("Cf-Something", "Else")
|
||||
h1.Add("Upgrade", "websocket")
|
||||
|
||||
h1resp := &http.Response{
|
||||
StatusCode: 200,
|
||||
Header: h1,
|
||||
}
|
||||
|
||||
b.ReportAllocs()
|
||||
b.ResetTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
_ = H1ResponseToH2ResponseHeaders(h1resp.StatusCode, h1resp.Header)
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user