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117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsLTE library.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE 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 Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <strings.h>
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#include <errno.h>
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#include <fcntl.h>
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#include "srslte/io/netsink.h"
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int srslte_netsink_init(srslte_netsink_t *q, char *address, uint16_t port, srslte_netsink_type_t type) {
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bzero(q, sizeof(srslte_netsink_t));
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q->sockfd=socket(AF_INET, type==SRSLTE_NETSINK_TCP?SOCK_STREAM:SOCK_DGRAM,0);
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if (q->sockfd < 0) {
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perror("socket");
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return -1;
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}
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int enable = 1;
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#if defined (SO_REUSEADDR)
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if (setsockopt(q->sockfd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)) < 0)
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perror("setsockopt(SO_REUSEADDR) failed");
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#endif
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#if defined (SO_REUSEPORT)
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if (setsockopt(q->sockfd, SOL_SOCKET, SO_REUSEPORT, &enable, sizeof(int)) < 0)
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perror("setsockopt(SO_REUSEPORT) failed");
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#endif
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q->servaddr.sin_family = AF_INET;
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q->servaddr.sin_addr.s_addr=inet_addr(address);
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q->servaddr.sin_port=htons(port);
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q->connected = false;
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q->type = type;
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return 0;
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}
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void srslte_netsink_free(srslte_netsink_t *q) {
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if (q->sockfd) {
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close(q->sockfd);
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}
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bzero(q, sizeof(srslte_netsink_t));
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}
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int srslte_netsink_set_nonblocking(srslte_netsink_t *q) {
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if (fcntl(q->sockfd, F_SETFL, O_NONBLOCK)) {
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perror("fcntl");
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return -1;
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}
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return 0;
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}
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int srslte_netsink_write(srslte_netsink_t *q, void *buffer, int nof_bytes) {
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if (!q->connected) {
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if (connect(q->sockfd,&q->servaddr,sizeof(q->servaddr)) < 0) {
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if (errno == ECONNREFUSED || errno == EINPROGRESS) {
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return 0;
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} else {
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perror("connect");
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exit(-1);
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return -1;
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}
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} else {
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q->connected = true;
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}
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}
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int n = 0;
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if (q->connected) {
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n = write(q->sockfd, buffer, nof_bytes);
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if (n < 0) {
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if (errno == ECONNRESET) {
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close(q->sockfd);
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q->sockfd=socket(AF_INET, q->type==SRSLTE_NETSINK_TCP?SOCK_STREAM:SOCK_DGRAM,0);
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if (q->sockfd < 0) {
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perror("socket");
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return -1;
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}
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q->connected = false;
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return 0;
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}
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}
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}
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return n;
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}
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