以下是一个简单的eXosip库服务器支持IPv4和IPv6客户端连接的代码示例:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <eXosip2/eXosip.h>
int main(int argc, char **argv)
{
int status = -1;
eXosip_t *ctx = NULL;
/* 初始化 eXosip 库 */
ctx = eXosip_malloc();
status = eXosip_init(ctx);
if (status != 0) {
fprintf(stderr, "Error initializing eXosip.\n");
exit(EXIT_FAILURE);
}
/* 设置 SIP URI 地址 */
osip_uri_t *uri = NULL;
const char *sip_uri = "sip:example.com";
uri = eXosip_parse_url(sip_uri);
if (!uri) {
fprintf(stderr, "Error parsing SIP URI: %s\n", sip_uri);
exit(EXIT_FAILURE);
}
/* 创建 IPv4 和 IPv6 监听套接字 */
int sock_v4, sock_v6;
struct sockaddr_in addr_v4;
struct sockaddr_in6 addr_v6;
// 创建 IPv4 套接字
memset(&addr_v4, 0x00, sizeof(addr_v4));
addr_v4.sin_family = AF_INET;
addr_v4.sin_addr.s_addr = htonl(INADDR_ANY);
addr_v4.sin_port=htons(5060);
sock_v4=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
bind(sock_v4, (struct sockaddr*)&addr_v4, sizeof(addr_v4));
// 创建 IPv6 套接字
memset(&addr_v6, 0x00, sizeof(addr_v6));
addr_v6.sin6_family = AF_INET6;
addr_v6.sin6_addr = in6addr_any;
addr_v6.sin6_port=htons(5060);
sock_v6=socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
bind(sock_v6, (struct sockaddr*)&addr_v6, sizeof(addr_v6));
/* 启动 eXosip 库服务器 */
status = eXosip_listen_addr(ctx, IPPROTO_UDP,
NULL, /* IPv4 监听地址 */
5060,
AF_INET,
NULL, /* IPv4 备用监听地址 */
NULL, /* IPv4 额外监听参数 */
NULL, /* IPv4 额外监听选项 */
-1,
IPPROTO_UDP,
NULL, /* IPv6 监听地址 */
5060,
AF_INET6,
NULL, /* IPv6 备用监听地址 */
NULL /* IPv6 额外监听选项 */);
if (status != 0) {
fprintf(stderr, "Error starting eXosip server.\n");
exit(EXIT_FAILURE);
}
printf("eXosip server started successfully.\n");
while (1) {
int nfds = eXosip_fd_wait(ctx, 1000);
if (nfds < 0) {
fprintf(stderr,"Error waiting for events\n");
break;
}
status = eXosip_event_wait(ctx, 1);
if (status >= 0) {
printf("SIP event received.\n");
// TODO: 处理 SIP 请求和响应
} else {
printf("No SIP event received.\n");
}
}
/* 清理 eXosip 库 */
eXosip_quit(ctx);
eXosip_free(ctx);
}
上述代码中,我们创建了一个eXosip库服务器,并启用了IPv4和IPv6监听套接字。在等待SIP事件的循环中,我们可以添加代码以处理具体的SIP请求和响应。