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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| package gost | ||
|
|
||
| import ( | ||
| "net" | ||
| "strconv" | ||
|
|
||
| "github.com/mdlayher/vsock" | ||
| ) | ||
|
|
||
| // vsockTransporter is a raw VSOCK transporter. | ||
| type vsockTransporter struct{} | ||
|
|
||
| // VSOCKTransporter creates a raw VSOCK client. | ||
| func VSOCKTransporter() Transporter { | ||
| return &vsockTransporter{} | ||
| } | ||
|
|
||
| func (tr *vsockTransporter) Dial(addr string, options ...DialOption) (net.Conn, error) { | ||
| opts := &DialOptions{} | ||
| for _, option := range options { | ||
| option(opts) | ||
| } | ||
| if opts.Chain == nil { | ||
| vAddr, err := parseAddr(addr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return vsock.Dial(vAddr.ContextID, vAddr.Port, nil) | ||
| } | ||
| return opts.Chain.Dial(addr) | ||
| } | ||
|
|
||
| func parseUint32(s string) (uint32, error ) { | ||
| n, err := strconv.ParseUint(s, 10, 32) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| return uint32(n), nil | ||
| } | ||
|
|
||
| func parseAddr(addr string) (*vsock.Addr, error) { | ||
| hostStr, portStr, err := net.SplitHostPort(addr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| host := uint32(0) | ||
| if hostStr != "" { | ||
| host, err = parseUint32(hostStr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
|
|
||
| port, err := parseUint32(portStr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &vsock.Addr{ContextID: host, Port: port}, nil | ||
| } | ||
|
|
||
| func (tr *vsockTransporter) Handshake(conn net.Conn, options ...HandshakeOption) (net.Conn, error) { | ||
| return conn, nil | ||
| } | ||
|
|
||
| func (tr *vsockTransporter) Multiplex() bool { | ||
| return false | ||
| } | ||
|
|
||
| // VSOCKListener creates a Listener for VSOCK proxy server. | ||
| func VSOCKListener(addr string) (Listener, error) { | ||
| vAddr, err := parseAddr(addr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return vsock.Listen(vAddr.Port, nil) | ||
| } |