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https://github.com/e1732a364fed/v2ray_simple.git
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8fcf747479
这是由两个问题造成的 问题1: 同时并发请求多个请求时，会出现同时建立两个mux的情况，导致先建立的mux被覆盖； 问题2: 一旦某个stream的连接失败后，代码 会关闭整个session。这是由于 iics无法分辨simplesocks和普通协议造成的。 加一个 isInner 标签即可分辨。
139 lines
4.0 KiB
Go
139 lines
4.0 KiB
Go
package proxy
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import (
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"io"
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"net"
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"strings"
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"sync"
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"time"
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"github.com/e1732a364fed/v2ray_simple/netLayer"
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"github.com/e1732a364fed/v2ray_simple/utils"
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"github.com/xtaci/smux"
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)
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// default recommended handshake read timeout
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const CommonReadTimeout = time.Second * 4
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//set read timeout after CommonReadTimeout
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func SetCommonReadTimeout(c net.Conn) error {
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return c.SetReadDeadline(time.Now().Add(CommonReadTimeout))
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}
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//规定，如果 proxy的server的handshake如果返回的是具有内层mux的连接，该连接要实现 MuxMarker 接口.
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type MuxMarker interface {
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io.ReadWriteCloser
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IsMux()
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}
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//实现 MuxMarker
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type MuxMarkerConn struct {
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netLayer.ReadWrapper
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}
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func (mh *MuxMarkerConn) IsMux() {}
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// some client may 建立tcp连接后首先由客户端读服务端的数据？虽较少见但确实存在.
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// Anyway firstpayload might not be read, and we should try to reduce this delay.
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// 也有可能是有人用 nc 来测试，也会遇到这种读不到 firstpayload 的情况
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const FirstPayloadTimeout = time.Millisecond * 100
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// Client is used to dial a server.
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// Because Server is "target agnostic", Client's Handshake requires a target addr as param.
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//
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// A Client has all the data of all layers in its VSI model.
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// Once a Client is fully defined, the flow of the data is fully defined.
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type Client interface {
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BaseInterface
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//Perform handshake when request is TCP。firstPayload 用于如 vless/trojan 这种 没有握手包的协议，可为空。
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Handshake(underlay net.Conn, firstPayload []byte, target netLayer.Addr) (wrappedConn io.ReadWriteCloser, err error)
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//Establish a channel and constantly request data for each UDP addr through this channel. firstpayload and target can be empty theoretically, depending on the implementation.
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EstablishUDPChannel(underlay net.Conn, firstPayload []byte, target netLayer.Addr) (netLayer.MsgConn, error)
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//If udp is send through multiple connection or not
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IsUDP_MultiChannel() bool
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//get/listen a useable inner mux
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GetClientInnerMuxSession(wrc io.ReadWriteCloser) *smux.Session
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InnerMuxEstablished() bool
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CloseInnerMuxSession()
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sync.Locker //用于锁定 innerMux
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}
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type UserClient interface {
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Client
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GetUser() utils.User
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}
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// Server is used for listening clients.
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// Because Server is "target agnostic"，Handshake should return the target addr that the Client requested.
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//
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// A Server has all the data of all layers in its VSI model.
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// Once a Server is fully defined, the flow of the data is fully defined.
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type Server interface {
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BaseInterface
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//ReadWriteCloser is for TCP request, net.PacketConn is for UDP request.
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// 约定，如果error返回的是 utils.ErrHandled， 则调用代码停止进一步处理。
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Handshake(underlay net.Conn) (net.Conn, netLayer.MsgConn, netLayer.Addr, error)
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//get/listen a useable inner mux
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GetServerInnerMuxSession(wlc io.ReadWriteCloser) *smux.Session
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}
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type UserServer interface {
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Server
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utils.UserContainer
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}
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// FullName can fully represent the VSI model for a proxy.
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// We think tcp/udp/kcp/raw_socket is FirstName，protocol of the proxy is LastName, and the rest is MiddleName。
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//
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// An Example of a full name: tcp+tls+ws+vless.
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// 总之，类似【域名】的规则，只不过分隔符从 点号 变成了加号, 且层级关系是从左到右。
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func GetFullName(pc BaseInterface) string {
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if n := pc.Name(); n == DirectName {
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return n
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} else {
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return getFullNameBuilder(pc, n).String()
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}
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}
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// return GetFullName(pc) + "://" + pc.AddrStr() (+ #tag)
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func GetVSI_url(pc BaseInterface) string {
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n := pc.Name()
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if n == DirectName {
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return DirectURL
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}
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sb := getFullNameBuilder(pc, n)
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sb.WriteString("://")
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sb.WriteString(pc.AddrStr())
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if t := pc.GetTag(); t != "" {
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sb.WriteByte('#')
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sb.WriteString(t)
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}
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return sb.String()
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}
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func getFullNameBuilder(pc BaseInterface, n string) *strings.Builder {
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var sb strings.Builder
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sb.WriteString(pc.Network())
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sb.WriteString(pc.MiddleName())
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sb.WriteString(n)
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if i, innerProxyName := pc.HasInnerMux(); i == 2 {
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sb.WriteString("+smux+")
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sb.WriteString(innerProxyName)
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}
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return &sb
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}
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