| 97f65b00 |
1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: conn.h,v 1.1 1999/05/14 21:01:14 mdw Exp $ |
| 4 | * |
| 5 | * Nonblocking connect handling |
| 6 | * |
| 7 | * (c) 1999 Mark Wooding |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of the mLib utilities library. |
| 13 | * |
| 14 | * mLib is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU Library General Public License as |
| 16 | * published by the Free Software Foundation; either version 2 of the |
| 17 | * License, or (at your option) any later version. |
| 18 | * |
| 19 | * mLib is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU Library General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU Library General Public |
| 25 | * License along with mLib; if not, write to the Free |
| 26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| 27 | * MA 02111-1307, USA. |
| 28 | */ |
| 29 | |
| 30 | /*----- Revision history --------------------------------------------------* |
| 31 | * |
| 32 | * $Log: conn.h,v $ |
| 33 | * Revision 1.1 1999/05/14 21:01:14 mdw |
| 34 | * Integrated `select' handling bits from the background resolver project. |
| 35 | * |
| 36 | */ |
| 37 | |
| 38 | #ifndef CONN_H |
| 39 | #define CONN_H |
| 40 | |
| 41 | #ifdef __cplusplus |
| 42 | extern "C" { |
| 43 | #endif |
| 44 | |
| 45 | /*----- Header files ------------------------------------------------------*/ |
| 46 | |
| 47 | #ifndef SEL_H |
| 48 | # include "sel.h" |
| 49 | #endif |
| 50 | |
| 51 | /*----- Data structures ---------------------------------------------------*/ |
| 52 | |
| 53 | /* --- The nonblocking connect structure --- */ |
| 54 | |
| 55 | typedef struct conn { |
| 56 | sel_file writer; /* Select listener */ |
| 57 | void (*func)(int /*fd*/, void */*p*/); /* Handler function */ |
| 58 | void *p; /* Argument for handler function */ |
| 59 | } conn; |
| 60 | |
| 61 | /*----- Functions provided ------------------------------------------------*/ |
| 62 | |
| 63 | /* --- @conn_init@ --- * |
| 64 | * |
| 65 | * Arguments: @conn *c@ = pointer to connection block |
| 66 | * @sel_state *s@ = pointer to select state to attach to |
| 67 | * @unsigned long saddr@ = source IP address |
| 68 | * @unsigned short sport@ = source port |
| 69 | * @unsigned long daddr@ = destination IP address |
| 70 | * @unsigned short dport@ = destination port |
| 71 | * @void (*func)(int fd, void *p) = handler function |
| 72 | * @void *p@ = argument for the handler function |
| 73 | * |
| 74 | * Returns: --- |
| 75 | * |
| 76 | * Use: Sets up a nonblocking connect job. The source address and |
| 77 | * port can be zero if you don't care. When the connection |
| 78 | * completes, the handler function is called with the connected |
| 79 | * socket as an argument. If the connect fails rather than |
| 80 | * completes, the handler is informed of this by being passed a |
| 81 | * negative file descriptor. In either case, the select job is |
| 82 | * then removed. |
| 83 | */ |
| 84 | |
| 85 | extern void conn_init(conn */*c*/, sel_state */*s*/, |
| 86 | unsigned long /*saddr*/, |
| 87 | unsigned short /*sport*/, |
| 88 | unsigned long /*daddr*/, |
| 89 | unsigned long /*dport*/, |
| 90 | void (*/*func*/)(int /*fd*/, void */*p*/), |
| 91 | void */*p*/); |
| 92 | |
| 93 | /* --- @conn_kill@ --- * |
| 94 | * |
| 95 | * Arguments: @conn *c@ = pointer to connection to dispose of |
| 96 | * |
| 97 | * Returns: --- |
| 98 | * |
| 99 | * Use: Disposes of a connection when it's not wanted any more. The |
| 100 | * connect handler function is not called. |
| 101 | */ |
| 102 | |
| 103 | extern void conn_kill(conn */*c*/); |
| 104 | |
| 105 | /*----- That's all, folks -------------------------------------------------*/ |
| 106 | |
| 107 | #ifdef __cplusplus |
| 108 | } |
| 109 | #endif |
| 110 | |
| 111 | #endif |
~mdw / mLib / blame