13     // connect signal

    13     // connect signal

    14     slots.connect(socket.sig_read(), this, &NetworkUDP::on_recv);

    14     slots.connect(socket.sig_read(), this, &NetworkUDP::on_recv);

    15 

    15 

    16     // nonblocking

    16     // nonblocking

    17     socket.set_nonblocking(true);

    17     socket.set_nonblocking(true);

    18 }

    21 }

    19 

    22 

    20 NetworkUDP::NetworkUDP (const NetworkAddress &bind_addr) :

    23 NetworkUDP::NetworkUDP (const NetworkAddress &bind_addr) :

    21     socket(AF_UNSPEC, SOCK_DGRAM) {

    24     socket(AF_UNSPEC, SOCK_DGRAM) {

    22     

    25     

    26     // connect signal

    29     // connect signal

    27     slots.connect(socket.sig_read(), this, &NetworkUDP::on_recv);

    30     slots.connect(socket.sig_read(), this, &NetworkUDP::on_recv);

    28 

    31 

    29     // nonblocking

    32     // nonblocking

    30     socket.set_nonblocking(true);

    33     socket.set_nonblocking(true);

    31 }

    37 }

    32         

    38         

    33 void NetworkUDP::on_recv (void) {

    39 void NetworkUDP::on_recv (void) {

    34     size_t ret;

    40     size_t ret;

    35     NetworkPacket pkt;

    41     NetworkPacket pkt;