675 lines
19 KiB
Go
675 lines
19 KiB
Go
package h2mux
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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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)
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type ByName []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(RequestUserHeadersField, 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) []Header {
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return []Header{{
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headersField,
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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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headersConversionErr := H2RequestHeadersToH1Request(
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[]Header{{
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RequestUserHeadersField,
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SerializeHeaders(http.Header{}),
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}},
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request,
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)
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assert.True(t, reflect.DeepEqual(http.Header{}, 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 := []Header{
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{Name: ":path", Value: "//bad_path/"},
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{Name: RequestUserHeadersField, 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 := []Header{
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{Name: ":path", Value: "/?query=mock%20value"},
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{Name: RequestUserHeadersField, 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 := []Header{
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{Name: ":path", Value: "/mock%20path"},
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{Name: RequestUserHeadersField, 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 := []Header{
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{Name: ":path", Value: testCase.path},
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{Name: RequestUserHeadersField, 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 := []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: RequestUserHeadersField, 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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// 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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// 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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// 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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}
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func stdlibHeaderToH2muxHeader(headers http.Header) (h2muxHeaders []Header) {
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for name, values := range headers {
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for _, value := range values {
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h2muxHeaders = append(h2muxHeaders, Header{name, value})
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}
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}
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return h2muxHeaders
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}
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func TestSerializeHeaders(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-One": {"Mock header one value", "three"},
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"Mock-Header-Two-Long": {"Mock header two value\nlong"},
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":;": {":;", ";:"},
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":": {":"},
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";": {";"},
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";;": {";;"},
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"Empty values": {"", ""},
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"": {"Empty key"},
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"control\tcharacter\b\n": {"value\n\b\t"},
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";\v:": {":\v;"},
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}
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for header, values := range mockHeaders {
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for _, value := range values {
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// Note that Golang's http library is opinionated;
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// at this point every header name will be title-cased in order to comply with the HTTP RFC
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// This means our proxy is not completely transparent when it comes to proxying headers
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request.Header.Add(header, value)
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}
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}
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serializedHeaders := SerializeHeaders(request.Header)
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// Sanity check: the headers serialized to something that's not an empty string
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assert.NotEqual(t, "", serializedHeaders)
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// Deserialize back, and ensure we get the same set of headers
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deserializedHeaders, err := DeserializeHeaders(serializedHeaders)
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assert.NoError(t, err)
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assert.Equal(t, 13, len(deserializedHeaders))
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h2muxExpectedHeaders := stdlibHeaderToH2muxHeader(mockHeaders)
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sort.Sort(ByName(deserializedHeaders))
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sort.Sort(ByName(h2muxExpectedHeaders))
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assert.True(
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t,
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reflect.DeepEqual(h2muxExpectedHeaders, deserializedHeaders),
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fmt.Sprintf("got = %#v, want = %#v\n", deserializedHeaders, h2muxExpectedHeaders),
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)
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}
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func TestSerializeNoHeaders(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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serializedHeaders := SerializeHeaders(request.Header)
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deserializedHeaders, err := DeserializeHeaders(serializedHeaders)
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assert.NoError(t, err)
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assert.Equal(t, 0, len(deserializedHeaders))
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}
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func TestDeserializeMalformed(t *testing.T) {
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var err error
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malformedData := []string{
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"malformed data",
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"bW9jawo=", // "mock"
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"bW9jawo=:ZGF0YQo=:bW9jawo=", // "mock:data:mock"
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"::",
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}
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for _, malformedValue := range malformedData {
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_, err = DeserializeHeaders(malformedValue)
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assert.Error(t, err)
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}
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}
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func TestParseHeaders(t *testing.T) {
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mockUserHeadersToSerialize := http.Header{
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"Mock-Header-One": {"1", "1.5"},
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"Mock-Header-Two": {"2"},
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"Mock-Header-Three": {"3"},
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}
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mockHeaders := []Header{
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{Name: "One", Value: "1"}, // will be dropped
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{Name: "Cf-Two", Value: "cf-value-1"},
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{Name: "Cf-Two", Value: "cf-value-2"},
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{Name: RequestUserHeadersField, Value: SerializeHeaders(mockUserHeadersToSerialize)},
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}
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|
|
expectedHeaders := []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 TestIsControlHeader(t *testing.T) {
|
|
controlHeaders := []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",
|
|
}
|
|
|
|
for _, header := range controlHeaders {
|
|
assert.True(t, IsControlHeader(header))
|
|
}
|
|
}
|
|
|
|
func TestIsNotControlHeader(t *testing.T) {
|
|
notControlHeaders := []string{
|
|
"mock-header",
|
|
"another-sample-header",
|
|
}
|
|
|
|
for _, header := range notControlHeaders {
|
|
assert.False(t, IsControlHeader(header))
|
|
}
|
|
}
|
|
|
|
func TestH1ResponseToH2ResponseHeaders(t *testing.T) {
|
|
mockHeaders := http.Header{
|
|
"User-header-one": {""},
|
|
"User-header-two": {"1", "2"},
|
|
"cf-header": {"cf-value"},
|
|
"Content-Length": {"123"},
|
|
}
|
|
mockResponse := http.Response{
|
|
StatusCode: 200,
|
|
Header: mockHeaders,
|
|
}
|
|
|
|
headers := H1ResponseToH2ResponseHeaders(&mockResponse)
|
|
|
|
serializedHeadersIndex := -1
|
|
for i, header := range headers {
|
|
if header.Name == ResponseUserHeadersField {
|
|
serializedHeadersIndex = i
|
|
break
|
|
}
|
|
}
|
|
assert.NotEqual(t, -1, serializedHeadersIndex)
|
|
actualControlHeaders := append(
|
|
headers[:serializedHeadersIndex],
|
|
headers[serializedHeadersIndex+1:]...,
|
|
)
|
|
expectedControlHeaders := []Header{
|
|
{Name: ":status", Value: "200"},
|
|
{Name: "content-length", Value: "123"},
|
|
}
|
|
|
|
assert.ElementsMatch(t, expectedControlHeaders, actualControlHeaders)
|
|
|
|
actualUserHeaders, err := DeserializeHeaders(headers[serializedHeadersIndex].Value)
|
|
expectedUserHeaders := []Header{
|
|
{Name: "User-header-one", Value: ""},
|
|
{Name: "User-header-two", Value: "1"},
|
|
{Name: "User-header-two", Value: "2"},
|
|
}
|
|
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)
|
|
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 != ResponseUserHeadersField {
|
|
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)
|
|
}
|
|
}
|