udptest.c
上传用户:tany51
上传日期:2013-06-12
资源大小:1397k
文件大小:5k
- /*
- * Copyright (C) 1999,2000 Ross Combs (rocombs@cs.nmsu.edu)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- #include "common/setup_before.h"
- #include <stdio.h>
- #ifdef HAVE_STDDEF_H
- # include <stddef.h>
- #else
- # ifndef NULL
- # define NULL ((void *)0)
- # endif
- #endif
- #ifdef HAVE_STRING_H
- # include <string.h>
- #endif
- #ifdef HAVE_MEMORY_H
- # include <memory.h>
- #endif
- #include "compat/memset.h"
- #include <errno.h>
- #include "compat/strerror.h"
- #ifdef TIME_WITH_SYS_TIME
- # include <sys/time.h>
- # include <time.h>
- #else
- # ifdef HAVE_SYS_TIME_H
- # include <sys/time.h>
- # else
- # include <time.h>
- # endif
- #endif
- #ifdef HAVE_UNISTD_H
- # include <unistd.h>
- #endif
- #ifdef HAVE_FCNTL_H
- # include <fcntl.h>
- #else
- # ifdef HAVE_SYS_FILE_H
- # include <sys/file.h>
- # endif
- #endif
- #ifdef HAVE_SYS_TYPES_H
- # include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_SOCKET_H
- # include <sys/socket.h>
- #endif
- #include "compat/socket.h"
- #include "compat/recv.h"
- #include "compat/send.h"
- #ifdef HAVE_SYS_PARAM_H
- # include <sys/param.h>
- #endif
- #ifdef HAVE_NETINET_IN_H
- # include <netinet/in.h>
- #endif
- #include "compat/netinet_in.h"
- #include "compat/psock.h"
- #include "common/packet.h"
- #include "common/init_protocol.h"
- #include "common/udp_protocol.h"
- #include "common/tag.h"
- #include "common/bn_type.h"
- #include "common/field_sizes.h"
- #include "common/network.h"
- #include "client.h"
- #include "udptest.h"
- #include "common/setup_after.h"
- #ifdef CLIENTDEBUG
- #define dprintf printf
- #else
- #define dprintf if (0) printf
- #endif
- extern int client_udptest_setup(char const * progname, unsigned short * lsock_port_ret)
- {
- int lsock;
- struct sockaddr_in laddr;
- unsigned short lsock_port;
-
- if (!progname)
- {
- fprintf(stderr,"got NULL prognamen");
- return -1;
- }
-
- if ((lsock = psock_socket(PF_INET,SOCK_DGRAM,PSOCK_IPPROTO_UDP))<0)
- {
- fprintf(stderr,"%s: could not create UDP socket (psock_socket: %s)n",progname,strerror(psock_errno()));
- return -1;
- }
-
- if (psock_ctl(lsock,PSOCK_NONBLOCK)<0)
- fprintf(stderr,"%s: could not set UDP socket to non-blocking mode (psock_ctl: %s)n",progname,strerror(psock_errno()));
-
- for (lsock_port=BNETD_MIN_TEST_PORT; lsock_port<=BNETD_MAX_TEST_PORT; lsock_port++)
- {
- memset(&laddr,0,sizeof(laddr));
- laddr.sin_family = PSOCK_AF_INET;
- laddr.sin_port = htons(lsock_port);
- laddr.sin_addr.s_addr = htonl(INADDR_ANY);
- if (psock_bind(lsock,(struct sockaddr *)&laddr,(psock_t_socklen)sizeof(laddr))==0)
- break;
-
- if (lsock_port==BNETD_MIN_TEST_PORT)
- dprintf("Could not bind to standard UDP port %hu, trying others. (psock_bind: %s)n",BNETD_MIN_TEST_PORT,strerror(psock_errno()));
- }
- if (lsock_port>BNETD_MAX_TEST_PORT)
- {
- fprintf(stderr,"%s: could not bind to any UDP port %hu through %hu (psock_bind: %s)n",progname,BNETD_MIN_TEST_PORT,BNETD_MAX_TEST_PORT,strerror(psock_errno()));
- psock_close(lsock);
- return -1;
- }
-
- if (lsock_port_ret)
- *lsock_port_ret = lsock_port;
-
- return lsock;
- }
- extern int client_udptest_recv(char const * progname, int lsock, unsigned short lsock_port, unsigned int timeout)
- {
- int len;
- unsigned int count;
- t_packet * rpacket;
- time_t start;
-
- if (!progname)
- {
- fprintf(stderr,"%s: got NULL prognamen",progname);
- return -1;
- }
-
- if (!(rpacket = packet_create(packet_class_bnet)))
- {
- fprintf(stderr,"%s: could not create packetn",progname);
- return -1;
- }
-
- start = time(NULL);
- count = 0;
- while (start+(time_t)timeout>=time(NULL)) /* timeout after a few seconds from last packet */
- {
- if ((len = psock_recv(lsock,packet_get_raw_data_build(rpacket,0),MAX_PACKET_SIZE,0))<0)
- {
- if (psock_errno()!=PSOCK_EAGAIN && psock_errno()!=PSOCK_EWOULDBLOCK)
- fprintf(stderr,"%s: failed to receive UDPTEST on port %hu (psock_recv: %s)n",progname,lsock_port,strerror(psock_errno()));
- continue;
- }
- packet_set_size(rpacket,len);
-
- if (packet_get_type(rpacket)!=SERVER_UDPTEST)
- {
- dprintf("Got unexpected UDP packet type %u on port %hun",packet_get_type(rpacket),lsock_port);
- continue;
- }
-
- if (bn_int_tag_eq(rpacket->u.server_udptest.bnettag,BNETTAG)<0)
- {
- fprintf(stderr,"%s: got bad UDPTEST packet on port %hun",progname,lsock_port);
- continue;
- }
-
- count++;
- if (count>=2)
- break;
-
- start = time(NULL);
- }
-
- packet_destroy(rpacket);
-
- if (count<2)
- {
- printf("Only received %d UDP packets on port %hu. Connection may be slow or firewalled.n",count,lsock_port);
- return -1;
- }
-
- return 0;
- }