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5b1830f3 MW |
1 | ### -*-pyrex-*- |
2 | ### | |
3 | ### Non-blocking connections | |
4 | ### | |
5 | ### (c) 2005 Straylight/Edgeware | |
6 | ### | |
579d0169 | 7 | |
5b1830f3 MW |
8 | ###----- Licensing notice ----------------------------------------------------- |
9 | ### | |
10 | ### This file is part of the Python interface to mLib. | |
11 | ### | |
12 | ### mLib/Python is free software; you can redistribute it and/or modify | |
13 | ### it under the terms of the GNU General Public License as published by | |
14 | ### the Free Software Foundation; either version 2 of the License, or | |
15 | ### (at your option) any later version. | |
16 | ### | |
17 | ### mLib/Python is distributed in the hope that it will be useful, | |
18 | ### but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ### GNU General Public License for more details. | |
21 | ### | |
22 | ### You should have received a copy of the GNU General Public License | |
23 | ### along with mLib/Python; if not, write to the Free Software Foundation, | |
24 | ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
579d0169 | 25 | |
26 | cdef class SelConnect: | |
addc0c37 MW |
27 | """ |
28 | SelConnect(SK, [connectedproc = FUNC], [errorproc = FUNC]) | |
29 | ||
30 | When socket SK connects, call CONNECTEDPROC(); if connection fails, call | |
31 | ERRORPROC(ERRNO, MESSAGE). | |
32 | ||
33 | Attributes: C.socket, C.activep, C.connectedproc, C.errorproc. | |
34 | """ | |
579d0169 | 35 | cdef conn c |
36 | cdef int _activep | |
37 | cdef readonly object socket | |
38 | cdef _connected | |
39 | cdef _error | |
376ad06d | 40 | def __cinit__(me, sk, connectedproc = None, errorproc = None, |
579d0169 | 41 | *hunoz, **hukairz): |
42 | conn_fd(&me.c, &_sel, sk.fileno(), _connfunc, <void *>me) | |
43 | me._activep = 1 | |
44 | me.socket = sk | |
45 | me._connected = _checkcallable(connectedproc, 'connected proc') | |
46 | me._error = _checkcallable(errorproc, 'error proc') | |
47 | def __dealloc__(me): | |
48 | if me._activep: | |
49 | conn_kill(&me.c) | |
50 | property activep: | |
addc0c37 | 51 | """C.activep -> BOOL: is connection still in progress?""" |
579d0169 | 52 | def __get__(me): |
53 | return _tobool(me._activep) | |
54 | property connectedproc: | |
addc0c37 | 55 | """C.connectedproc -> FUNC: call FUNC() when connection completes""" |
579d0169 | 56 | def __get__(me): |
57 | return me._connected | |
58 | def __set__(me, proc): | |
59 | me._connected = _checkcallable(proc, 'connected proc') | |
60 | def __del__(me): | |
61 | me._connected = None | |
62 | property errorproc: | |
addc0c37 MW |
63 | """ |
64 | C.errorproc -> FUNC: call FUNC(ERRNO, MSG) if connection fails | |
65 | """ | |
579d0169 | 66 | def __get__(me): |
67 | return me._error | |
68 | def __set__(me, proc): | |
69 | me._error = _checkcallable(proc, 'error proc') | |
70 | def __del__(me): | |
71 | me._error = None | |
72 | def kill(me): | |
addc0c37 | 73 | """C.kill(): give up on connection""" |
579d0169 | 74 | if not me._activep: |
75 | raise ValueError, 'already dead' | |
76 | conn_kill(&me.c); | |
77 | me._dead() | |
78 | return me | |
79 | cdef _dead(me): | |
80 | me._activep = 0 | |
81 | me.dead() | |
82 | def dead(me): | |
addc0c37 | 83 | """C.dead(): called when connection completes or fails""" |
579d0169 | 84 | pass |
85 | def connected(me): | |
addc0c37 | 86 | """C.connected(): called when connection completes successfully""" |
579d0169 | 87 | return _maybecall(me._connected, ()) |
88 | def error(me, errno, strerror): | |
addc0c37 | 89 | """C.error(ERRNO, MSG): called when connection fails""" |
579d0169 | 90 | return _maybecall(me._error, ()) |
91 | ||
b51b6cf0 | 92 | cdef void _connfunc(int fd, void *arg): |
579d0169 | 93 | cdef SelConnect c |
94 | c = <SelConnect>arg | |
95 | c._dead() | |
96 | if fd == -1: | |
97 | c.socket = None | |
98 | c.error(errno, strerror(errno)) | |
99 | else: | |
100 | c.connected() | |
101 | ||
5b1830f3 | 102 | ###----- That's all, folks -------------------------------------------------- |