github.com/sagernet/sing@v0.2.6/common/network/handshake.go (about)

     1  package network
     2  
     3  import (
     4  	"github.com/sagernet/sing/common"
     5  	E "github.com/sagernet/sing/common/exceptions"
     6  )
     7  
     8  type HandshakeConn interface {
     9  	HandshakeFailure(err error) error
    10  }
    11  
    12  func HandshakeFailure(conn any, err error) error {
    13  	if handshakeConn, isHandshakeConn := common.Cast[HandshakeConn](conn); isHandshakeConn {
    14  		return E.Append(err, handshakeConn.HandshakeFailure(err), func(err error) error {
    15  			return E.Cause(err, "write handshake failure")
    16  		})
    17  	}
    18  	return err
    19  }