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/* $Id: udp_echo_srv_sync.c 3553 2011-05-05 06:14:19Z nanang $ */
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* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
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* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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static pj_atomic_t *total_bytes;
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static int worker_thread(void *arg)
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pj_sock_t sock = (pj_sock_t)arg;
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pj_status_t last_recv_err = PJ_SUCCESS, last_write_err = PJ_SUCCESS;
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addrlen = sizeof(addr);
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rc = pj_sock_recvfrom(sock, buf, &len, 0, &addr, &addrlen);
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if (rc != last_recv_err) {
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app_perror("...recv error", rc);
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pj_atomic_add(total_bytes, len);
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rc = pj_sock_sendto(sock, buf, &len, 0, &addr, addrlen);
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if (rc != PJ_SUCCESS) {
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if (rc != last_write_err) {
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app_perror("...send error", rc);
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PJ_UNREACHED(return 0;)
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int echo_srv_sync(void)
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pj_thread_t *thread[ECHO_SERVER_MAX_THREADS];
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pool = pj_pool_create(mem, NULL, 4000, 4000, NULL);
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rc = pj_atomic_create(pool, 0, &total_bytes);
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if (rc != PJ_SUCCESS) {
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app_perror("...unable to create atomic_var", rc);
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rc = app_socket(pj_AF_INET(), pj_SOCK_DGRAM(),0, ECHO_SERVER_START_PORT, &sock);
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if (rc != PJ_SUCCESS) {
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app_perror("...socket error", rc);
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for (i=0; i<ECHO_SERVER_MAX_THREADS; ++i) {
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rc = pj_thread_create(pool, NULL, &worker_thread, (void*)sock,
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PJ_THREAD_DEFAULT_STACK_SIZE, 0,
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if (rc != PJ_SUCCESS) {
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app_perror("...unable to create thread", rc);
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PJ_LOG(3,("", "...UDP echo server running with %d threads at port %d",
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ECHO_SERVER_MAX_THREADS, ECHO_SERVER_START_PORT));
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PJ_LOG(3,("", "...Press Ctrl-C to abort"));
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echo_srv_common_loop(total_bytes);
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int echo_srv_common_loop(pj_atomic_t *bytes_counter)
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pj_highprec_t last_received, avg_bw, highest_bw;
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pj_time_val last_print;
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const char *ioqueue_name;
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pj_gettimeofday(&last_print);
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avg_bw = highest_bw = 0;
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ioqueue_name = pj_ioqueue_name();
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pj_highprec_t received, cur_received, bw;
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pj_time_val now, duration;
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pj_thread_sleep(1000);
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received = cur_received = pj_atomic_get(bytes_counter);
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cur_received = cur_received - last_received;
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pj_gettimeofday(&now);
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PJ_TIME_VAL_SUB(duration, last_print);
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msec = PJ_TIME_VAL_MSEC(duration);
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pj_highprec_mul(bw, 1000);
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pj_highprec_div(bw, msec);
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last_received = received;
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avg_bw = avg_bw + bw;
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PJ_LOG(3,("", "%s UDP (%d threads): %u KB/s (avg=%u KB/s) %s",
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ECHO_SERVER_MAX_THREADS,
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(unsigned)(bw / 1000),
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(unsigned)(avg_bw / count / 1000),
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(count==20 ? "<ses avg>" : "")));
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if (avg_bw/count > highest_bw)
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highest_bw = avg_bw/count;
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PJ_LOG(3,("", "Highest average bandwidth=%u KB/s",
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(unsigned)(highest_bw/1000)));
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PJ_UNREACHED(return 0;)