Support http outbound

infra/conf/http.go

@@ -1,7 +1,11 @@
 package conf
 
 import (
+	"encoding/json"
+
 	"github.com/golang/protobuf/proto"
+	"v2ray.com/core/common/protocol"
+	"v2ray.com/core/common/serial"
 	"v2ray.com/core/proxy/http"
 )
 
@@ -10,6 +14,13 @@ type HttpAccount struct {
 	Password string `json:"pass"`
 }
 
+func (v *HttpAccount) Build() *http.Account {
+	return &http.Account{
+		Username: v.Username,
+		Password: v.Password,
+	}
+}
+
 type HttpServerConfig struct {
 	Timeout     uint32         `json:"timeout"`
 	Accounts    []*HttpAccount `json:"accounts"`
@@ -33,3 +44,37 @@ func (c *HttpServerConfig) Build() (proto.Message, error) {
 
 	return config, nil
 }
+
+type HttpRemoteConfig struct {
+	Address *Address          `json:"address"`
+	Port    uint16            `json:"port"`
+	Users   []json.RawMessage `json:"users"`
+}
+type HttpClientConfig struct {
+	Servers []*HttpRemoteConfig `json:"servers"`
+}
+
+func (v *HttpClientConfig) Build() (proto.Message, error) {
+	config := new(http.ClientConfig)
+	config.Server = make([]*protocol.ServerEndpoint, len(v.Servers))
+	for idx, serverConfig := range v.Servers {
+		server := &protocol.ServerEndpoint{
+			Address: serverConfig.Address.Build(),
+			Port:    uint32(serverConfig.Port),
+		}
+		for _, rawUser := range serverConfig.Users {
+			user := new(protocol.User)
+			if err := json.Unmarshal(rawUser, user); err != nil {
+				return nil, newError("failed to parse HTTP user").Base(err).AtError()
+			}
+			account := new(HttpAccount)
+			if err := json.Unmarshal(rawUser, account); err != nil {
+				return nil, newError("failed to parse HTTP account").Base(err).AtError()
+			}
+			user.Account = serial.ToTypedMessage(account.Build())
+			server.User = append(server.User, user)
+		}
+		config.Server[idx] = server
+	}
+	return config, nil
+}

infra/conf/v2ray.go

@@ -24,6 +24,7 @@ var (
 	outboundConfigLoader = NewJSONConfigLoader(ConfigCreatorCache{
 		"blackhole":   func() interface{} { return new(BlackholeConfig) },
 		"freedom":     func() interface{} { return new(FreedomConfig) },
+		"http":        func() interface{} { return new(HttpClientConfig) },
 		"shadowsocks": func() interface{} { return new(ShadowsocksClientConfig) },
 		"vmess":       func() interface{} { return new(VMessOutboundConfig) },
 		"socks":       func() interface{} { return new(SocksClientConfig) },

proxy/http/client.go

@@ -1,6 +1,147 @@
 package http
 
-/*
+import (
+	"context"
+	"encoding/base64"
+	"io"
+	"strings"
+
+	"v2ray.com/core"
+	"v2ray.com/core/common"
+	"v2ray.com/core/common/buf"
+	"v2ray.com/core/common/net"
+	"v2ray.com/core/common/protocol"
+	"v2ray.com/core/common/retry"
+	"v2ray.com/core/common/session"
+	"v2ray.com/core/common/signal"
+	"v2ray.com/core/common/task"
+	"v2ray.com/core/features/policy"
+	"v2ray.com/core/transport"
+	"v2ray.com/core/transport/internet"
+)
+
 type Client struct {
+	serverPicker  protocol.ServerPicker
+	policyManager policy.Manager
+}
+
+// NewClient create a new http client based on the given config.
+func NewClient(ctx context.Context, config *ClientConfig) (*Client, error) {
+	serverList := protocol.NewServerList()
+	for _, rec := range config.Server {
+		s, err := protocol.NewServerSpecFromPB(*rec)
+		if err != nil {
+			return nil, newError("failed to get server spec").Base(err)
+		}
+		serverList.AddServer(s)
+	}
+	if serverList.Size() == 0 {
+		return nil, newError("0 target server")
+	}
+
+	v := core.MustFromContext(ctx)
+	return &Client{
+		serverPicker:  protocol.NewRoundRobinServerPicker(serverList),
+		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
+	}, nil
+}
+
+// Process implements proxy.Outbound.Process.
+// 使用connect方法连接http代理服务器，获得一个隧道，然后通过该隧道通信
+func (c *Client) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
+	outbound := session.OutboundFromContext(ctx)
+	if outbound == nil || !outbound.Target.IsValid() {
+		return newError("target not specified.")
+	}
+	destination := outbound.Target
+
+	if destination.Network == net.Network_UDP {
+		return newError("UDP is not supported by HTTP outbound")
+	}
+
+	var server *protocol.ServerSpec
+	var conn internet.Connection
+
+	if err := retry.ExponentialBackoff(5, 100).On(func() error {
+		server = c.serverPicker.PickServer()
+		dest := server.Destination()
+		rawConn, err := dialer.Dial(ctx, dest)
+		if err != nil {
+			return err
+		}
+		conn = rawConn
+
+		return nil
+	}); err != nil {
+		return newError("failed to find an available destination").Base(err)
+	}
+
+	defer func() {
+		if err := conn.Close(); err != nil {
+			newError("failed to closed connection").Base(err).WriteToLog(session.ExportIDToError(ctx))
+		}
+	}()
+
+	p := c.policyManager.ForLevel(0)
+
+	user := server.PickUser()
+	if user != nil {
+		p = c.policyManager.ForLevel(user.Level)
+	}
+
+	if err := setUpHttpTunnel(conn, conn, &destination, user); err != nil {
+		return err
+	}
+
+	ctx, cancel := context.WithCancel(ctx)
+	timer := signal.CancelAfterInactivity(ctx, cancel, p.Timeouts.ConnectionIdle)
+
+	requestFunc := func() error {
+		defer timer.SetTimeout(p.Timeouts.DownlinkOnly)
+		return buf.Copy(link.Reader, buf.NewWriter(conn), buf.UpdateActivity(timer))
+	}
+	responseFunc := func() error {
+		defer timer.SetTimeout(p.Timeouts.UplinkOnly)
+		return buf.Copy(buf.NewReader(conn), link.Writer, buf.UpdateActivity(timer))
+	}
+
+	var responseDonePost = task.OnSuccess(responseFunc, task.Close(link.Writer))
+	if err := task.Run(ctx, requestFunc, responseDonePost); err != nil {
+		return newError("connection ends").Base(err)
+	}
+
+	return nil
+}
+
+// 使用http connect方法建立一个隧道
+func setUpHttpTunnel(reader io.Reader, writer io.Writer, destination *net.Destination, user *protocol.MemoryUser) error {
+	var headers []string
+	destNetAddr := destination.NetAddr()
+	headers = append(headers, "CONNECT "+destNetAddr+" HTTP/1.1")
+	headers = append(headers, "Host: "+destNetAddr)
+	if user != nil && user.Account != nil {
+		account := user.Account.(*Account)
+		auth := account.GetUsername() + ":" + account.GetPassword()
+		headers = append(headers, "Proxy-Authorization: Basic "+base64.StdEncoding.EncodeToString([]byte(auth)))
+	}
+	headers = append(headers, "Proxy-Connection: Keep-Alive")
+
+	b := buf.New()
+	b.WriteString(strings.Join(headers, "\r\n") + "\r\n\r\n")
+	if err := buf.WriteAllBytes(writer, b.Bytes()); err != nil {
+		return err
+	}
+
+	b.Clear()
+	if _, err := b.ReadFrom(reader); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func init() {
+	common.Must(common.RegisterConfig((*ClientConfig)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
+		return NewClient(ctx, config.(*ClientConfig))
+	}))
 }
-*/

proxy/http/config.go

@@ -1,5 +1,20 @@
 package http
 
+import (
+	"v2ray.com/core/common/protocol"
+)
+
+func (a *Account) Equals(another protocol.Account) bool {
+	if account, ok := another.(*Account); ok {
+		return a.Username == account.Username
+	}
+	return false
+}
+
+func (a *Account) AsAccount() (protocol.Account, error) {
+	return a, nil
+}
+
 func (sc *ServerConfig) HasAccount(username, password string) bool {
 	if sc.Accounts == nil {
 		return false

proxy/http/config.pb.go

@@ -4,6 +4,7 @@ import (
 	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
 	math "math"
+	protocol "v2ray.com/core/common/protocol"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -17,6 +18,53 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
+type Account struct {
+	Username             string   `protobuf:"bytes,1,opt,name=username,proto3" json:"username,omitempty"`
+	Password             string   `protobuf:"bytes,2,opt,name=password,proto3" json:"password,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Account) Reset()         { *m = Account{} }
+func (m *Account) String() string { return proto.CompactTextString(m) }
+func (*Account) ProtoMessage()    {}
+func (*Account) Descriptor() ([]byte, []int) {
+	return fileDescriptor_e66c3db3a635d8e4, []int{0}
+}
+
+func (m *Account) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Account.Unmarshal(m, b)
+}
+func (m *Account) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Account.Marshal(b, m, deterministic)
+}
+func (m *Account) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Account.Merge(m, src)
+}
+func (m *Account) XXX_Size() int {
+	return xxx_messageInfo_Account.Size(m)
+}
+func (m *Account) XXX_DiscardUnknown() {
+	xxx_messageInfo_Account.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Account proto.InternalMessageInfo
+
+func (m *Account) GetUsername() string {
+	if m != nil {
+		return m.Username
+	}
+	return ""
+}
+
+func (m *Account) GetPassword() string {
+	if m != nil {
+		return m.Password
+	}
+	return ""
+}
+
 // Config for HTTP proxy server.
 type ServerConfig struct {
 	Timeout              uint32            `protobuf:"varint,1,opt,name=timeout,proto3" json:"timeout,omitempty"` // Deprecated: Do not use.
@@ -32,7 +80,7 @@ func (m *ServerConfig) Reset()         { *m = ServerConfig{} }
 func (m *ServerConfig) String() string { return proto.CompactTextString(m) }
 func (*ServerConfig) ProtoMessage()    {}
 func (*ServerConfig) Descriptor() ([]byte, []int) {
-	return fileDescriptor_e66c3db3a635d8e4, []int{0}
+	return fileDescriptor_e66c3db3a635d8e4, []int{1}
 }
 
 func (m *ServerConfig) XXX_Unmarshal(b []byte) error {
@@ -82,18 +130,20 @@ func (m *ServerConfig) GetUserLevel() uint32 {
 	return 0
 }
 
-// ClientConfig for HTTP proxy client.
+// ClientConfig is the protobuf config for HTTP proxy client.
 type ClientConfig struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
+	// Sever is a list of HTTP server addresses.
+	Server               []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=server,proto3" json:"server,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                   `json:"-"`
+	XXX_unrecognized     []byte                     `json:"-"`
+	XXX_sizecache        int32                      `json:"-"`
 }
 
 func (m *ClientConfig) Reset()         { *m = ClientConfig{} }
 func (m *ClientConfig) String() string { return proto.CompactTextString(m) }
 func (*ClientConfig) ProtoMessage()    {}
 func (*ClientConfig) Descriptor() ([]byte, []int) {
-	return fileDescriptor_e66c3db3a635d8e4, []int{1}
+	return fileDescriptor_e66c3db3a635d8e4, []int{2}
 }
 
 func (m *ClientConfig) XXX_Unmarshal(b []byte) error {
@@ -114,7 +164,15 @@ func (m *ClientConfig) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_ClientConfig proto.InternalMessageInfo
 
+func (m *ClientConfig) GetServer() []*protocol.ServerEndpoint {
+	if m != nil {
+		return m.Server
+	}
+	return nil
+}
+
 func init() {
+	proto.RegisterType((*Account)(nil), "v2ray.core.proxy.http.Account")
 	proto.RegisterType((*ServerConfig)(nil), "v2ray.core.proxy.http.ServerConfig")
 	proto.RegisterMapType((map[string]string)(nil), "v2ray.core.proxy.http.ServerConfig.AccountsEntry")
 	proto.RegisterType((*ClientConfig)(nil), "v2ray.core.proxy.http.ClientConfig")
@@ -125,24 +183,29 @@ func init() {
 }
 
 var fileDescriptor_e66c3db3a635d8e4 = []byte{
-	// 296 bytes of a gzipped FileDescriptorProto
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-	0x69, 0x94, 0x9f, 0xa7, 0x9b, 0x01, 0x00, 0x00,
+	// 375 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x51, 0x4d, 0x6b, 0xe3, 0x30,
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+	0x7a, 0x67, 0x04, 0x54, 0x02, 0x00, 0x00,
 }

proxy/http/config.proto

@@ -6,6 +6,13 @@ option go_package = "http";
 option java_package = "com.v2ray.core.proxy.http";
 option java_multiple_files = true;
 
+import "v2ray.com/core/common/protocol/server_spec.proto";
+
+message Account {
+  string username = 1;
+  string password = 2;
+}
+
 // Config for HTTP proxy server.
 message ServerConfig {
   uint32 timeout = 1 [deprecated = true];
@@ -14,7 +21,8 @@ message ServerConfig {
   uint32 user_level = 4;
 }
 
-// ClientConfig for HTTP proxy client.
+// ClientConfig is the protobuf config for HTTP proxy client.
 message ClientConfig {
-
+  // Sever is a list of HTTP server addresses.
+  repeated v2ray.core.common.protocol.ServerEndpoint server = 1;
 }