github.com/igoogolx/clash@v1.19.8/common/sockopt/reuseaddr_linux.go (about)

     1  package sockopt
     2  
     3  import (
     4  	"net"
     5  	"syscall"
     6  )
     7  
     8  func UDPReuseaddr(c *net.UDPConn) (err error) {
     9  	rc, err := c.SyscallConn()
    10  	if err != nil {
    11  		return
    12  	}
    13  
    14  	rc.Control(func(fd uintptr) {
    15  		err = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
    16  	})
    17  
    18  	return
    19  }