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Annotation of 42BSD/ucb/talk/ctl.c, revision 1.1

1.1     ! root        1: /* $Header: ctl.c 1.4 83/06/09 23:37:01 moore Exp $ */
        !             2: 
        !             3: /* This file handles haggling with the various talk daemons to
        !             4:    get a socket to talk to. sockt is opened and connected in
        !             5:    the progress
        !             6:  */
        !             7: 
        !             8: #include "talk_ctl.h"
        !             9: 
        !            10: struct sockaddr_in daemon_addr = { AF_INET };
        !            11: struct sockaddr_in ctl_addr = { AF_INET };
        !            12: struct sockaddr_in my_addr = { AF_INET };
        !            13: 
        !            14:     /* inet addresses of the two machines */
        !            15: struct in_addr my_machine_addr;
        !            16: struct in_addr his_machine_addr;
        !            17: 
        !            18: u_short daemon_port;   /* port number of the talk daemon */
        !            19: 
        !            20: int ctl_sockt;
        !            21: int sockt;
        !            22: int invitation_waiting = 0;
        !            23: 
        !            24: CTL_MSG msg;
        !            25: 
        !            26: open_sockt()
        !            27: {
        !            28:     int length;
        !            29: 
        !            30:     my_addr.sin_addr = my_machine_addr;
        !            31:     my_addr.sin_port = 0;
        !            32: 
        !            33:     sockt = socket(AF_INET, SOCK_STREAM, 0, 0);
        !            34: 
        !            35:     if (sockt <= 0) {
        !            36:        p_error("Bad socket");
        !            37:     }
        !            38: 
        !            39:     if ( bind(sockt, &my_addr, sizeof(my_addr)) != 0) {
        !            40:        p_error("Binding local socket");
        !            41:     }
        !            42: 
        !            43:     length = sizeof(my_addr);
        !            44: 
        !            45:     if (getsockname(sockt, &my_addr, &length) == -1) {
        !            46:        p_error("Bad address for socket");
        !            47:     }
        !            48: }
        !            49: 
        !            50:     /* open the ctl socket */
        !            51: 
        !            52: open_ctl() 
        !            53: {
        !            54:     int length;
        !            55: 
        !            56:     ctl_addr.sin_port = 0;
        !            57:     ctl_addr.sin_addr = my_machine_addr;
        !            58: 
        !            59:     ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0, 0);
        !            60: 
        !            61:     if (ctl_sockt <= 0) {
        !            62:        p_error("Bad socket");
        !            63:     }
        !            64: 
        !            65:     if (bind(ctl_sockt, &ctl_addr, sizeof(ctl_addr), 0) != 0) {
        !            66:        p_error("Couldn't bind to control socket");
        !            67:     }
        !            68: 
        !            69:     length = sizeof(ctl_addr);
        !            70:     if (getsockname(ctl_sockt, &ctl_addr, &length) == -1) {
        !            71:        p_error("Bad address for ctl socket");
        !            72:     }
        !            73: }
        !            74: 
        !            75: /* print_addr is a debug print routine */
        !            76: 
        !            77: print_addr(addr)
        !            78: struct sockaddr_in addr;
        !            79: {
        !            80:     int i;
        !            81: 
        !            82:     printf("addr = %x, port = %o, family = %o zero = ",
        !            83:            addr.sin_addr, addr.sin_port, addr.sin_family);
        !            84: 
        !            85:     for (i = 0; i<8;i++) {
        !            86:        printf("%o ", (int)addr.sin_zero[i]);
        !            87:     }
        !            88:     putchar('\n');
        !            89: }

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