3.1.7.4 Safe Raw Sockets - ICMP Sockets

• To receive ICMP error messages associated with a specific local TCP/UDP port, the ICMP socket needs to be bound to the port.
  • #include < planetlab.h >
    struct sockaddr_in sin;
    sock = socket(PF_INET, SOCK_RAW, IPPROTO_ICMP_UDP);
    memset(& sin, 0, sizeof(sin));
    sin.sin_port = htons(9090);
    bind(sock, (struct sockaddr *)& sin, sizeof(sin));