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/* $Id$ */
/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* 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 <pjlib.h>
#include "test.h"
static pj_ioqueue_key_t *key;
static pj_atomic_t *total_bytes;
static pj_bool_t thread_quit_flag;
struct op_key
{
pj_ioqueue_op_key_t op_key_;
struct op_key *peer;
char *buffer;
pj_size_t size;
int is_pending;
pj_status_t last_err;
pj_sockaddr_in addr;
int addrlen;
};
static void on_read_complete(pj_ioqueue_key_t *key,
pj_ioqueue_op_key_t *op_key,
pj_ssize_t bytes_received)
{
pj_status_t rc;
struct op_key *recv_rec = (struct op_key *)op_key;
for (;;) {
struct op_key *send_rec = recv_rec->peer;
recv_rec->is_pending = 0;
if (bytes_received < 0) {
if (-bytes_received != recv_rec->last_err) {
recv_rec->last_err = (pj_status_t)-bytes_received;
app_perror("...error receiving data", recv_rec->last_err);
}
} else if (bytes_received == 0) {
/* note: previous error, or write callback */
} else {
pj_atomic_add(total_bytes, (pj_atomic_value_t)bytes_received);
if (!send_rec->is_pending) {
pj_ssize_t sent = bytes_received;
pj_memcpy(send_rec->buffer, recv_rec->buffer, bytes_received);
pj_memcpy(&send_rec->addr, &recv_rec->addr, recv_rec->addrlen);
send_rec->addrlen = recv_rec->addrlen;
rc = pj_ioqueue_sendto(key, &send_rec->op_key_,
send_rec->buffer, &sent, 0,
&send_rec->addr, send_rec->addrlen);
send_rec->is_pending = (rc==PJ_EPENDING);
if (rc!=PJ_SUCCESS && rc!=PJ_EPENDING) {
app_perror("...send error(1)", rc);
}
}
}
if (!send_rec->is_pending) {
bytes_received = recv_rec->size;
rc = pj_ioqueue_recvfrom(key, &recv_rec->op_key_,
recv_rec->buffer, &bytes_received, 0,
&recv_rec->addr, &recv_rec->addrlen);
recv_rec->is_pending = (rc==PJ_EPENDING);
if (rc == PJ_SUCCESS) {
/* fall through next loop. */
} else if (rc == PJ_EPENDING) {
/* quit callback. */
break;
} else {
/* error */
app_perror("...recv error", rc);
recv_rec->last_err = rc;
bytes_received = 0;
/* fall through next loop. */
}
} else {
/* recv will be done when write completion callback is called. */
break;
}
}
}
static void on_write_complete(pj_ioqueue_key_t *key,
pj_ioqueue_op_key_t *op_key,
pj_ssize_t bytes_sent)
{
struct op_key *send_rec = (struct op_key*)op_key;
if (bytes_sent <= 0) {
pj_status_t rc = (pj_status_t)-bytes_sent;
if (rc != send_rec->last_err) {
send_rec->last_err = rc;
app_perror("...send error(2)", rc);
}
}
send_rec->is_pending = 0;
on_read_complete(key, &send_rec->peer->op_key_, 0);
}
static int worker_thread(void *arg)
{
pj_ioqueue_t *ioqueue = (pj_ioqueue_t*) arg;
struct op_key read_op, write_op;
char recv_buf[512], send_buf[512];
pj_ssize_t length;
pj_status_t rc;
read_op.peer = &write_op;
read_op.is_pending = 0;
read_op.last_err = 0;
read_op.buffer = recv_buf;
read_op.size = sizeof(recv_buf);
read_op.addrlen = sizeof(read_op.addr);
write_op.peer = &read_op;
write_op.is_pending = 0;
write_op.last_err = 0;
write_op.buffer = send_buf;
write_op.size = sizeof(send_buf);
length = sizeof(recv_buf);
rc = pj_ioqueue_recvfrom(key, &read_op.op_key_, recv_buf, &length, 0,
&read_op.addr, &read_op.addrlen);
if (rc == PJ_SUCCESS) {
read_op.is_pending = 1;
on_read_complete(key, &read_op.op_key_, length);
}
while (!thread_quit_flag) {
pj_time_val timeout;
timeout.sec = 0; timeout.msec = 10;
rc = pj_ioqueue_poll(ioqueue, &timeout);
}
return 0;
}
int udp_echo_srv_ioqueue(void)
{
pj_pool_t *pool;
pj_sock_t sock;
pj_ioqueue_t *ioqueue;
pj_ioqueue_callback callback;
int i;
pj_thread_t *thread[ECHO_SERVER_MAX_THREADS];
pj_status_t rc;
pj_bzero(&callback, sizeof(callback));
callback.on_read_complete = &on_read_complete;
callback.on_write_complete = &on_write_complete;
pool = pj_pool_create(mem, NULL, 4000, 4000, NULL);
if (!pool)
return -10;
rc = pj_ioqueue_create(pool, 2, &ioqueue);
if (rc != PJ_SUCCESS) {
app_perror("...pj_ioqueue_create error", rc);
return -20;
}
rc = app_socket(pj_AF_INET(), pj_SOCK_DGRAM(), 0,
ECHO_SERVER_START_PORT, &sock);
if (rc != PJ_SUCCESS) {
app_perror("...app_socket error", rc);
return -30;
}
rc = pj_ioqueue_register_sock(pool, ioqueue, sock, NULL,
&callback, &key);
if (rc != PJ_SUCCESS) {
app_perror("...error registering socket", rc);
return -40;
}
rc = pj_atomic_create(pool, 0, &total_bytes);
if (rc != PJ_SUCCESS) {
app_perror("...error creating atomic variable", rc);
return -45;
}
for (i=0; i<ECHO_SERVER_MAX_THREADS; ++i) {
rc = pj_thread_create(pool, NULL, &worker_thread, ioqueue,
PJ_THREAD_DEFAULT_STACK_SIZE, 0,
&thread[i]);
if (rc != PJ_SUCCESS) {
app_perror("...create thread error", rc);
return -50;
}
}
echo_srv_common_loop(total_bytes);
return 0;
}
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