1 /* 2 * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "common.h" 35 #ifdef HAVE_SYS_TYPES_H 36 #include <sys/types.h> 37 #endif 38 #ifdef HAVE_SYS_SOCKET_H 39 #include <sys/socket.h> 40 #endif 41 42 RCSID("$Id$"); 43 44 void 45 set_buffer_size(int fd, int read) 46 { 47 #if defined(SO_RCVBUF) && defined(SO_SNDBUF) && defined(HAVE_SETSOCKOPT) 48 int size = 4194304; 49 int optname = read ? SO_RCVBUF : SO_SNDBUF; 50 51 #ifdef HAVE_GETSOCKOPT 52 int curr=0; 53 socklen_t optlen; 54 55 optlen = sizeof(curr); 56 if(getsockopt(fd, SOL_SOCKET, optname, (void *)&curr, &optlen) == 0) { 57 if(curr >= size) { 58 /* Already large enough */ 59 return; 60 } 61 } 62 #endif /* HAVE_GETSOCKOPT */ 63 64 while(size >= 131072 && 65 setsockopt(fd, SOL_SOCKET, optname, (void *)&size, sizeof(size)) < 0) 66 size /= 2; 67 #endif 68 } 69 70 71