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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| package socks5 | ||
|
|
||
| import ( | ||
| "errors" | ||
| "net" | ||
| "time" | ||
| ) | ||
|
|
||
| // Client is socks5 client wrapper | ||
| type Client struct { | ||
| UserName string | ||
| Password string | ||
| TCPAddr *net.TCPAddr | ||
| TCPConn *net.TCPConn | ||
| UDPAddr *net.UDPAddr | ||
| TCPDeadline int // not refreshed | ||
| TCPTimeout int | ||
| UDPDeadline int // refreshed | ||
| } | ||
|
|
||
| func NewClient(addr, username, password string, tcpTimeout, tcpDeadline, udpDeadline int) (*Client, error) { | ||
| taddr, err := net.ResolveTCPAddr("tcp", addr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| uaddr, err := net.ResolveUDPAddr("udp", addr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| c := &Client{ | ||
| UserName: username, | ||
| Password: password, | ||
| TCPAddr: taddr, | ||
| UDPAddr: uaddr, | ||
| TCPTimeout: tcpTimeout, | ||
| TCPDeadline: tcpDeadline, | ||
| UDPDeadline: udpDeadline, | ||
| } | ||
| return c, nil | ||
| } | ||
|
|
||
| func (c *Client) Negotiate() error { | ||
| con, err := Dial.Dial("tcp", c.TCPAddr.String()) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| c.TCPConn = con.(*net.TCPConn) | ||
| if c.TCPTimeout != 0 { | ||
| if err := c.TCPConn.SetKeepAlivePeriod(time.Duration(c.TCPTimeout) * time.Second); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| if c.TCPDeadline != 0 { | ||
| if err := c.TCPConn.SetDeadline(time.Now().Add(time.Duration(c.TCPTimeout) * time.Second)); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| m := MethodNone | ||
| if c.UserName != "" && c.Password != "" { | ||
| m = MethodUsernamePassword | ||
| } | ||
| rq := NewNegotiationRequest([]byte{m}) | ||
| if err := rq.WriteTo(c.TCPConn); err != nil { | ||
| return err | ||
| } | ||
| rp, err := NewNegotiationReplyFrom(c.TCPConn) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if rp.Method != m { | ||
| return errors.New("Unsupport method") | ||
| } | ||
| if m == MethodUsernamePassword { | ||
| urq := NewUserPassNegotiationRequest([]byte(c.UserName), []byte(c.Password)) | ||
| if err := urq.WriteTo(c.TCPConn); err != nil { | ||
| return err | ||
| } | ||
| urp, err := NewUserPassNegotiationReplyFrom(c.TCPConn) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if urp.Status != UserPassStatusSuccess { | ||
| return ErrUserPassAuth | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (c *Client) Request(r *Request) (*Reply, error) { | ||
| if err := r.WriteTo(c.TCPConn); err != nil { | ||
| return nil, err | ||
| } | ||
| rp, err := NewReplyFrom(c.TCPConn) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if rp.Rep != RepSuccess { | ||
| return nil, errors.New("Host unreachable") | ||
| } | ||
| return rp, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,10 @@ | ||
| package socks5 | ||
|
|
||
| import "github.com/txthinking/ant" | ||
|
|
||
| // Debug enable debug log | ||
| var Debug bool | ||
| var Dial ant.Dialer = ant.DefaultDial | ||
|
|
||
| func init() { | ||
| } |
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