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Add custom header support for HTTP proxy

This commit is contained in:
PMExtra 2022-12-15 19:15:43 +08:00 committed by yuhan6665
parent d7ac6946d2
commit c9b6fc0104
4 changed files with 172 additions and 28 deletions
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8
infra/conf/http.go
View File

@ -53,6 +53,7 @@ type HTTPRemoteConfig struct {
type HTTPClientConfig struct {
Servers []*HTTPRemoteConfig `json:"servers"`
Headers map[string]string `json:"headers"`
}
func (v *HTTPClientConfig) Build() (proto.Message, error) {
@ -77,5 +78,12 @@ func (v *HTTPClientConfig) Build() (proto.Message, error) {
}
config.Server[idx] = server
}
config.Header = make([]*http.Header, 0, 32)
for key, value := range v.Headers {
config.Header = append(config.Header, &http.Header{
Key: key,
Value: value,
})
}
return config, nil
}

51
proxy/http/client.go
View File

@ -2,12 +2,14 @@ package http
import (
"bufio"
"bytes"
"context"
"encoding/base64"
"io"
"net/http"
"net/url"
"sync"
"text/template"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/buf"
@ -30,6 +32,7 @@ import (
type Client struct {
serverPicker protocol.ServerPicker
policyManager policy.Manager
header []*Header
}
type h2Conn struct {
@ -60,6 +63,7 @@ func NewClient(ctx context.Context, config *ClientConfig) (*Client, error) {
return &Client{
serverPicker: protocol.NewRoundRobinServerPicker(serverList),
policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
header: config.Header,
}, nil
}
@ -88,12 +92,17 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
buf.ReleaseMulti(mbuf)
defer bytespool.Free(firstPayload)
header, err := fillRequestHeader(ctx, c.header)
if err != nil {
return newError("failed to fill out header").Base(err)
}
if err := retry.ExponentialBackoff(5, 100).On(func() error {
server := c.serverPicker.PickServer()
dest := server.Destination()
user = server.PickUser()
netConn, err := setUpHTTPTunnel(ctx, dest, targetAddr, user, dialer, firstPayload)
netConn, err := setUpHTTPTunnel(ctx, dest, targetAddr, user, dialer, header, firstPayload)
if netConn != nil {
if _, ok := netConn.(*http2Conn); !ok {
if _, err := netConn.Write(firstPayload); err != nil {
@ -139,8 +148,42 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
return nil
}
// fillRequestHeader will fill out the template of the headers
func fillRequestHeader(ctx context.Context, header []*Header) ([]*Header, error) {
if len(header) == 0 {
return header, nil
}
inbound := session.InboundFromContext(ctx)
outbound := session.OutboundFromContext(ctx)
data := struct {
Source net.Destination
Target net.Destination
}{
Source: inbound.Source,
Target: outbound.Target,
}
filled := make([]*Header, len(header))
for i, h := range header {
tmpl, err := template.New(h.Key).Parse(h.Value)
if err != nil {
return nil, err
}
var buf bytes.Buffer
if err = tmpl.Execute(&buf, data); err != nil {
return nil, err
}
filled[i] = &Header{Key: h.Key, Value: buf.String()}
}
return filled, nil
}
// setUpHTTPTunnel will create a socket tunnel via HTTP CONNECT method
func setUpHTTPTunnel(ctx context.Context, dest net.Destination, target string, user *protocol.MemoryUser, dialer internet.Dialer, firstPayload []byte) (net.Conn, error) {
func setUpHTTPTunnel(ctx context.Context, dest net.Destination, target string, user *protocol.MemoryUser, dialer internet.Dialer, header []*Header, firstPayload []byte) (net.Conn, error) {
req := &http.Request{
Method: http.MethodConnect,
URL: &url.URL{Host: target},
@ -154,6 +197,10 @@ func setUpHTTPTunnel(ctx context.Context, dest net.Destination, target string, u
req.Header.Set("Proxy-Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(auth)))
}
for _, h := range header {
req.Header.Set(h.Key, h.Value)
}
connectHTTP1 := func(rawConn net.Conn) (net.Conn, error) {
req.Header.Set("Proxy-Connection", "Keep-Alive")

135
proxy/http/config.pb.go
View File

@ -150,6 +150,61 @@ func (x *ServerConfig) GetUserLevel() uint32 {
return 0
}
type Header struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
Value string `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
}
func (x *Header) Reset() {
*x = Header{}
if protoimpl.UnsafeEnabled {
mi := &file_proxy_http_config_proto_msgTypes[2]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *Header) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*Header) ProtoMessage() {}
func (x *Header) ProtoReflect() protoreflect.Message {
mi := &file_proxy_http_config_proto_msgTypes[2]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use Header.ProtoReflect.Descriptor instead.
func (*Header) Descriptor() ([]byte, []int) {
return file_proxy_http_config_proto_rawDescGZIP(), []int{2}
}
func (x *Header) GetKey() string {
if x != nil {
return x.Key
}
return ""
}
func (x *Header) GetValue() string {
if x != nil {
return x.Value
}
return ""
}
// ClientConfig is the protobuf config for HTTP proxy client.
type ClientConfig struct {
state protoimpl.MessageState
@ -158,12 +213,13 @@ type ClientConfig struct {
// Sever is a list of HTTP server addresses.
Server []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=server,proto3" json:"server,omitempty"`
Header []*Header `protobuf:"bytes,2,rep,name=header,proto3" json:"header,omitempty"`
}
func (x *ClientConfig) Reset() {
*x = ClientConfig{}
if protoimpl.UnsafeEnabled {
mi := &file_proxy_http_config_proto_msgTypes[2]
mi := &file_proxy_http_config_proto_msgTypes[3]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
@ -176,7 +232,7 @@ func (x *ClientConfig) String() string {
func (*ClientConfig) ProtoMessage() {}
func (x *ClientConfig) ProtoReflect() protoreflect.Message {
mi := &file_proxy_http_config_proto_msgTypes[2]
mi := &file_proxy_http_config_proto_msgTypes[3]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
@ -189,7 +245,7 @@ func (x *ClientConfig) ProtoReflect() protoreflect.Message {
// Deprecated: Use ClientConfig.ProtoReflect.Descriptor instead.
func (*ClientConfig) Descriptor() ([]byte, []int) {
return file_proxy_http_config_proto_rawDescGZIP(), []int{2}
return file_proxy_http_config_proto_rawDescGZIP(), []int{3}
}
func (x *ClientConfig) GetServer() []*protocol.ServerEndpoint {
@ -199,6 +255,13 @@ func (x *ClientConfig) GetServer() []*protocol.ServerEndpoint {
return nil
}
func (x *ClientConfig) GetHeader() []*Header {
if x != nil {
return x.Header
}
return nil
}
var File_proxy_http_config_proto protoreflect.FileDescriptor
var file_proxy_http_config_proto_rawDesc = []byte{
@ -227,17 +290,23 @@ var file_proxy_http_config_proto_rawDesc = []byte{
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}
var (
@ -252,22 +321,24 @@ func file_proxy_http_config_proto_rawDescGZIP() []byte {
return file_proxy_http_config_proto_rawDescData
}
var file_proxy_http_config_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
var file_proxy_http_config_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
var file_proxy_http_config_proto_goTypes = []interface{}{
(*Account)(nil), // 0: xray.proxy.http.Account
(*ServerConfig)(nil), // 1: xray.proxy.http.ServerConfig
(*ClientConfig)(nil), // 2: xray.proxy.http.ClientConfig
nil, // 3: xray.proxy.http.ServerConfig.AccountsEntry
(*protocol.ServerEndpoint)(nil), // 4: xray.common.protocol.ServerEndpoint
(*Header)(nil), // 2: xray.proxy.http.Header
(*ClientConfig)(nil), // 3: xray.proxy.http.ClientConfig
nil, // 4: xray.proxy.http.ServerConfig.AccountsEntry
(*protocol.ServerEndpoint)(nil), // 5: xray.common.protocol.ServerEndpoint
}
var file_proxy_http_config_proto_depIdxs = []int32{
3, // 0: xray.proxy.http.ServerConfig.accounts:type_name -> xray.proxy.http.ServerConfig.AccountsEntry
4, // 1: xray.proxy.http.ClientConfig.server:type_name -> xray.common.protocol.ServerEndpoint
2, // [2:2] is the sub-list for method output_type
2, // [2:2] is the sub-list for method input_type
2, // [2:2] is the sub-list for extension type_name
2, // [2:2] is the sub-list for extension extendee
0, // [0:2] is the sub-list for field type_name
4, // 0: xray.proxy.http.ServerConfig.accounts:type_name -> xray.proxy.http.ServerConfig.AccountsEntry
5, // 1: xray.proxy.http.ClientConfig.server:type_name -> xray.common.protocol.ServerEndpoint
2, // 2: xray.proxy.http.ClientConfig.header:type_name -> xray.proxy.http.Header
3, // [3:3] is the sub-list for method output_type
3, // [3:3] is the sub-list for method input_type
3, // [3:3] is the sub-list for extension type_name
3, // [3:3] is the sub-list for extension extendee
0, // [0:3] is the sub-list for field type_name
}
func init() { file_proxy_http_config_proto_init() }
@ -301,6 +372,18 @@ func file_proxy_http_config_proto_init() {
}
}
file_proxy_http_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*Header); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_proxy_http_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*ClientConfig); i {
case 0:
return &v.state
@ -319,7 +402,7 @@ func file_proxy_http_config_proto_init() {
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_proxy_http_config_proto_rawDesc,
NumEnums: 0,
NumMessages: 4,
NumMessages: 5,
NumExtensions: 0,
NumServices: 0,
},

6
proxy/http/config.proto
View File

@ -21,8 +21,14 @@ message ServerConfig {
uint32 user_level = 4;
}
message Header {
string key = 1;
string value = 2;
}
// ClientConfig is the protobuf config for HTTP proxy client.
message ClientConfig {
// Sever is a list of HTTP server addresses.
repeated xray.common.protocol.ServerEndpoint server = 1;
repeated Header header = 2;
}