Return to talkd.h CVS log

Up to [CSRG BSD Unix] / 43BSD / include / protocols

Annotation of 43BSD/include/protocols/talkd.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)talkd.h     5.2 (Berkeley) 3/13/86
        !             7:  */
        !             8: 
        !             9: #include <sys/types.h>
        !            10: #include <sys/socket.h>
        !            11: /*
        !            12:  * This describes the protocol used by the talk server and clients.
        !            13:  *
        !            14:  * The talk server acts a repository of invitations, responding to
        !            15:  * requests by clients wishing to rendezvous for the purpose of
        !            16:  * holding a conversation.  In normal operation, a client, the caller,
        !            17:  * initiates a rendezvous by sending a CTL_MSG to the server of
        !            18:  * type LOOK_UP.  This causes the server to search its invitation
        !            19:  * tables to check if an invitation currently exists for the caller
        !            20:  * (to speak to the callee specified in the message).  If the lookup
        !            21:  * fails, the caller then sends an ANNOUNCE message causing the server
        !            22:  * to broadcast an announcement on the callee's login ports requesting
        !            23:  * contact.  When the callee responds, the local server uses the
        !            24:  * recorded invitation to respond with the appropriate rendezvous
        !            25:  * address and the caller and callee client programs establish a
        !            26:  * stream connection through which the conversation takes place.
        !            27:  */
        !            28: 
        !            29: /*
        !            30:  * Client->server request message format.
        !            31:  */
        !            32: typedef struct {
        !            33:        u_char  vers;           /* protocol version */
        !            34:        u_char  type;           /* request type, see below */
        !            35:        u_char  answer;         /* not used */
        !            36:        u_char  pad;
        !            37:        u_long  id_num;         /* message id */
        !            38:        struct  sockaddr addr;
        !            39:        struct  sockaddr ctl_addr;
        !            40:        long    pid;            /* caller's process id */
        !            41: #define        NAME_SIZE       12
        !            42:        char    l_name[NAME_SIZE];/* caller's name */
        !            43:        char    r_name[NAME_SIZE];/* callee's name */
        !            44: #define        TTY_SIZE        16
        !            45:        char    r_tty[TTY_SIZE];/* callee's tty name */
        !            46: } CTL_MSG;
        !            47: 
        !            48: /*
        !            49:  * Server->client response message format.
        !            50:  */
        !            51: typedef struct {
        !            52:        u_char  vers;           /* protocol version */
        !            53:        u_char  type;           /* type of request message, see below */
        !            54:        u_char  answer;         /* respose to request message, see below */
        !            55:        u_char  pad;
        !            56:        u_long  id_num;         /* message id */
        !            57:        struct  sockaddr addr;  /* address for establishing conversation */
        !            58: } CTL_RESPONSE;
        !            59: 
        !            60: #define        TALK_VERSION    1               /* protocol version */
        !            61: 
        !            62: /* message type values */
        !            63: #define LEAVE_INVITE   0       /* leave invitation with server */
        !            64: #define LOOK_UP                1       /* check for invitation by callee */
        !            65: #define DELETE         2       /* delete invitation by caller */
        !            66: #define ANNOUNCE       3       /* announce invitation by caller */
        !            67: 
        !            68: /* answer values */
        !            69: #define SUCCESS                0       /* operation completed properly */
        !            70: #define NOT_HERE       1       /* callee not logged in */
        !            71: #define FAILED         2       /* operation failed for unexplained reason */
        !            72: #define MACHINE_UNKNOWN        3       /* caller's machine name unknown */
        !            73: #define PERMISSION_DENIED 4    /* callee's tty doesn't permit announce */
        !            74: #define UNKNOWN_REQUEST        5       /* request has invalid type value */
        !            75: #define        BADVERSION      6       /* request has invalid protocol version */
        !            76: #define        BADADDR         7       /* request has invalid addr value */
        !            77: #define        BADCTLADDR      8       /* request has invalid ctl_addr value */
        !            78: 
        !            79: /*
        !            80:  * Operational parameters.
        !            81:  */
        !            82: #define MAX_LIFE       60      /* max time daemon saves invitations */
        !            83: /* RING_WAIT should be 10's of seconds less than MAX_LIFE */
        !            84: #define RING_WAIT      30      /* time to wait before resending invitation */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.