97 lines
3.8 KiB
Markdown
97 lines
3.8 KiB
Markdown
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## socks5
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[中文](README_ZH.md)
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[](https://goreportcard.com/report/github.com/txthinking/socks5)
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[](https://godoc.org/github.com/txthinking/socks5)
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[](https://github.com/sponsors/txthinking)
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[](https://docs.google.com/forms/d/e/1FAIpQLSdzMwPtDue3QoezXSKfhW88BXp57wkbDXnLaqokJqLeSWP9vQ/viewform)
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SOCKS Protocol Version 5 Library.
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Full TCP/UDP and IPv4/IPv6 support.
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Goals: KISS, less is more, small API, code is like the original protocol.
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❤️ A project by [txthinking.com](https://www.txthinking.com)
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### Install
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```
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$ go get github.com/txthinking/socks5
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```
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### Struct is like concept in protocol
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* Negotiation:
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* `type NegotiationRequest struct`
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* `func NewNegotiationRequest(methods []byte)`, in client
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* `func (r *NegotiationRequest) WriteTo(w io.Writer)`, client writes to server
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* `func NewNegotiationRequestFrom(r io.Reader)`, server reads from client
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* `type NegotiationReply struct`
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* `func NewNegotiationReply(method byte)`, in server
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* `func (r *NegotiationReply) WriteTo(w io.Writer)`, server writes to client
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* `func NewNegotiationReplyFrom(r io.Reader)`, client reads from server
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* User and password negotiation:
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* `type UserPassNegotiationRequest struct`
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* `func NewUserPassNegotiationRequest(username []byte, password []byte)`, in client
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* `func (r *UserPassNegotiationRequest) WriteTo(w io.Writer)`, client writes to server
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* `func NewUserPassNegotiationRequestFrom(r io.Reader)`, server reads from client
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* `type UserPassNegotiationReply struct`
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* `func NewUserPassNegotiationReply(status byte)`, in server
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* `func (r *UserPassNegotiationReply) WriteTo(w io.Writer)`, server writes to client
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* `func NewUserPassNegotiationReplyFrom(r io.Reader)`, client reads from server
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* Request:
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* `type Request struct`
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* `func NewRequest(cmd byte, atyp byte, dstaddr []byte, dstport []byte)`, in client
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* `func (r *Request) WriteTo(w io.Writer)`, client writes to server
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* `func NewRequestFrom(r io.Reader)`, server reads from client
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* After server gets the client's *Request, processes...
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* Reply:
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* `type Reply struct`
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* `func NewReply(rep byte, atyp byte, bndaddr []byte, bndport []byte)`, in server
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* `func (r *Reply) WriteTo(w io.Writer)`, server writes to client
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* `func NewReplyFrom(r io.Reader)`, client reads from server
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* Datagram:
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* `type Datagram struct`
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* `func NewDatagram(atyp byte, dstaddr []byte, dstport []byte, data []byte)`
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* `func NewDatagramFromBytes(bb []byte)`
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* `func (d *Datagram) Bytes()`
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### Advanced API
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**Server**. You can process client's request by yourself after reading **Request** from client. Also, here is a advanced interfaces.
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* `type Server struct`
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* `type Handler interface`
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* `TCPHandle(*Server, *net.TCPConn, *Request) error`
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* `UDPHandle(*Server, *net.UDPAddr, *Datagram) error`
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Example:
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```
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s, _ := NewClassicServer(addr, ip, username, password, tcpTimeout, udpTimeout)
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s.ListenAndServe(Handler)
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```
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* If you want a standard socks5 server, pass in nil
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* If you want to handle data by yourself, pass in a custom Handler
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**Client**. Here is a client support both TCP and UDP and return net.Conn.
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* `type Client struct`
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Example:
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```
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c, _ := socks5.NewClient(server, username, password, tcpTimeout, udpTimeout)
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conn, _ := c.Dial(network, addr)
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```
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### Users:
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* Brook [https://github.com/txthinking/brook](https://github.com/txthinking/brook)
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* Shiliew [https://www.shiliew.com](https://www.shiliew.com)
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## License
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Licensed under The MIT License
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