请问：linux难道没有端口重用吗？我用SO_REUSEPORT报找不到

Question

if( getsockopt( sockfd , SOL_SOCKET, SO_REUSEPORT,
                 ( char *)&optval, &optlen ) < 0 )
            printf( " get socket error n" );

  if( setsockopt( sockfd , SOL_SOCKET, SO_REUSEPORT,
         ( char *)&optval, sizeof( optval ) ) < 0 )
            printf( " set socket error n" );

编译报错：
libtcp.c:1195: error: `SO_REUSEPORT' undeclared (first use in this function)
libtcp.c:1195: error: (Each undeclared identifier is reported only once
libtcp.c:1195: error: for each function it appears in.)

我用的是suse9

Answer 1

呵呵，已经搞定，需要改
/usr/include/asm/socket.h:/* To add :#define SO_REUSEPORT 15 */
呵呵