// dbss作为服务端
// 初始化服务器端socket
void init_server() {
int fd;
struct sockaddr_in addr;
memset(&addr, 0, sizeof addr);
fd = socket(AF_INET, SOCK_STREAM, 0);
if(fd < 0) {
printf("Failed to init server socket, %s, %s, %d\n", __FUNCTION__, __FILE__, __LINE__);
exit(EXIT_FAILURE);
}
set_reuse_addr(fd);
addr.sin_family = AF_INET;
addr.sin_port = htons(lsn_port);
inet_pton(AF_INET, "0.0.0.0", &addr.sin_addr);
if(bind(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
#ifdef DEBUG_STDOUT
printf("Failed to bind, %s, %s, %d\n", __FUNCTION__, __FILE__, __LINE__);
#else
#endif
close(fd);
exit(EXIT_FAILURE);
}
if(listen(fd, DESCRIPTOR_MAX) < 0) {
#ifdef DEBUG_STDOUT
printf("Failed to listen, %s, %s, %d\n", __FUNCTION__, __FILE__, __LINE__);
#else
#endif
close(fd);
exit(EXIT_FAILURE);
}
if(sockinfo[fd].fd == 0) {
sockinfo[fd].fd = fd;
sockinfo[fd].type = TYPE_LISTEN;
}
epoll_addfd(efd, fd, EPOLLIN);
}
socket_t tcp_create(unsigned int ip, unsigned short port) {
/*create socket*/
int sock = ::socket(AF_INET, SOCK_STREAM, 0);
if (sock == -1) {
return -1; //initial socket error
}
/*set reuse address*/
if(set_reuse_addr(sock) != 0){
::close(sock);
return -1;
}
/*set local address*/
struct sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = ::htons(port);
addr.sin_addr.s_addr = htonl(ip);
/*bind socket to local address*/
if (::bind(sock, (struct sockaddr *) &addr, sizeof(addr)) != 0){
::close(sock);
return -1;
}
return sock;
}
bool XSocket::listen(const XSockAddr& addr, int backlog)
{
if (m_sock == INVALID_SOCKET) return false;
if (backlog < 0) backlog = 0X7FFFFFFF;
if (!set_reuse_addr(true)) return false;
if (!this->bind(addr)) return false;
if (0 != ::listen(m_sock, backlog)) return false;
return true;
}
static int setup_named_sock(char *listen_addr, int listen_port, struct socketlist *socklist)
{
struct sockaddr_in sin;
int sockfd;
long flags;
memset(&sin, 0, sizeof sin);
sin.sin_family = AF_INET;
sin.sin_port = htons(listen_port);
if (listen_addr) {
/* Well, host better be an IP address here. */
if (inet_pton(AF_INET, listen_addr, &sin.sin_addr.s_addr) <= 0)
return 0;
} else {
sin.sin_addr.s_addr = htonl(INADDR_ANY);
}
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0)
return 0;
if (set_reuse_addr(sockfd)) {
logerror("Could not set SO_REUSEADDR: %s", strerror(errno));
close(sockfd);
return 0;
}
set_keep_alive(sockfd);
if ( bind(sockfd, (struct sockaddr *)&sin, sizeof sin) < 0 ) {
logerror("Could not bind to %s: %s",
ip2str(AF_INET, (struct sockaddr *)&sin, sizeof(sin)),
strerror(errno));
close(sockfd);
return 0;
}
if (listen(sockfd, 5) < 0) {
logerror("Could not listen to %s: %s",
ip2str(AF_INET, (struct sockaddr *)&sin, sizeof(sin)),
strerror(errno));
close(sockfd);
return 0;
}
flags = fcntl(sockfd, F_GETFD, 0);
if (flags >= 0)
fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC);
ALLOC_GROW(socklist->list, socklist->nr + 1, socklist->alloc);
socklist->list[socklist->nr++] = sockfd;
return 1;
}
static int setup_multicast_impl(char * bindAddr, unsigned int nTTL, char * p_multicast_addr, char * p_port, struct mcast_connection * p_mcast_conn)
{
int rc;
debug_outputln("%s %4.4u : %s %s %s %3.3u", __FILE__, __LINE__, bindAddr, p_multicast_addr, p_port, nTTL);
p_mcast_conn->multiAddr_ = ResolveAddressWithFlags(p_multicast_addr, p_port, AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, AI_PASSIVE);
if (NULL == p_mcast_conn->multiAddr_)
{
debug_outputln("%s %4.4u : %10.10d %8.8x", __FILE__, __LINE__, WSAGetLastError(), WSAGetLastError());
goto cleanup;
}
dump_addrinfo(p_mcast_conn->multiAddr_, __FILE__, __LINE__);
// Resolve the binding address
p_mcast_conn->bindAddr_ = ResolveAddressWithFlags(bindAddr, p_port, p_mcast_conn->multiAddr_->ai_family, p_mcast_conn->multiAddr_->ai_socktype, p_mcast_conn->multiAddr_->ai_protocol, AI_PASSIVE);
if (NULL == p_mcast_conn->bindAddr_)
{
debug_outputln("%s %4.4u : %10.10d %8.8x", __FILE__, __LINE__, WSAGetLastError(), WSAGetLastError());
goto cleanup;
}
dump_addrinfo(p_mcast_conn->bindAddr_, __FILE__, __LINE__);
//
// Create the socket. In Winsock 1 you don't need any special
// flags to indicate multicasting.
//
p_mcast_conn->socket_ = socket(p_mcast_conn->multiAddr_->ai_family, p_mcast_conn->multiAddr_->ai_socktype, p_mcast_conn->multiAddr_->ai_protocol);
if (p_mcast_conn->socket_ == INVALID_SOCKET)
{
debug_outputln("%s %4.4u : %10.10d %8.8x", __FILE__, __LINE__, WSAGetLastError(), WSAGetLastError());
goto cleanup;
}
if (!set_reuse_addr(p_mcast_conn->socket_))
{
debug_outputln("%s %4.4u : %10.10d %8.8x", __FILE__, __LINE__, WSAGetLastError(), WSAGetLastError());
goto cleanup;
}
// Join the multicast group if specified
rc = join_mcast_group_set_ttl(p_mcast_conn->socket_, p_mcast_conn->multiAddr_, p_mcast_conn->bindAddr_, nTTL);
if (rc == SOCKET_ERROR)
{
debug_outputln("%s %4.4u : %10.10d %8.8x", __FILE__, __LINE__, WSAGetLastError(), WSAGetLastError());
goto cleanup;
}
dump_locally_bound_socket(p_mcast_conn->socket_, __FILE__, __LINE__);
return 1;
cleanup:
return 0;
}
static int socksetup(char *listen_addr, int listen_port, int **socklist_p)
{
struct sockaddr_in sin;
int sockfd;
long flags;
memset(&sin, 0, sizeof sin);
sin.sin_family = AF_INET;
sin.sin_port = htons(listen_port);
if (listen_addr) {
/* Well, host better be an IP address here. */
if (inet_pton(AF_INET, listen_addr, &sin.sin_addr.s_addr) <= 0)
return 0;
} else {
sin.sin_addr.s_addr = htonl(INADDR_ANY);
}
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0)
return 0;
if (set_reuse_addr(sockfd)) {
close(sockfd);
return 0;
}
if ( bind(sockfd, (struct sockaddr *)&sin, sizeof sin) < 0 ) {
close(sockfd);
return 0;
}
if (listen(sockfd, 5) < 0) {
close(sockfd);
return 0;
}
flags = fcntl(sockfd, F_GETFD, 0);
if (flags >= 0)
fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC);
*socklist_p = xmalloc(sizeof(int));
**socklist_p = sockfd;
return 1;
}
//-----------------------------------------------------------------------------
bool CySocket::listen(int port, int max_connections) {
if (sock == INVALID_SOCKET)
return false;
// set sockaddr for listening
sockaddr_in sai;
memset(&sai, 0, sizeof(sai));
sai.sin_family = AF_INET; // Protocol
sai.sin_addr.s_addr = htonl(INADDR_ANY); // No Filter
sai.sin_port = htons(port); // Listening Port
set_reuse_port(); // Re-Use Port
set_reuse_addr(); // Re-Use IP
if (bind(sock, (sockaddr *) &sai, sizeof(sockaddr_in)) != SOCKET_ERROR)
if (::listen(sock, max_connections) == 0)
return true;
return false;
}
tcp_server_t *tcp_server_create(int port, int max_conn)
{
tcp_server_t *server = NULL;
tcp_server_stream_t *stream = NULL;
int max_conn_count = TCP_MAX_STREAM_NUM;
int i = 0;
struct sockaddr_in server_addr;
struct epoll_event event;
server = (tcp_server_t *)malloc(sizeof(tcp_server_t));
if (NULL == server) {
goto error;
}
bzero(server, sizeof(tcp_server_t));
server->rcv_cb = rcv_cb_default;
server->snd_cb = snd_cb_default;
server->port = port;
if (max_conn > 0) {
max_conn_count = max_conn;
}
/* 创建并发连接结构 */
server->streams = (tcp_server_stream_t *)malloc(sizeof(tcp_server_stream_t) * max_conn_count);
if (NULL == server->streams) {
log_error("malloc for server->streams failed.");
goto error;
}
bzero(server->streams, sizeof(tcp_server_stream_t) * max_conn_count);
server->stream_num = max_conn_count;
/* idle stream链表初始化 */
for (i = 0; i < max_conn_count; i++) {
server->streams[i].index = i;
add_stream_into_idle_list(server, &server->streams[i]);
}
/* 创建listen socket */
server->listen_fd = socket(AF_INET, SOCK_STREAM, 0);
if (-1 == server->listen_fd) {
log_error("create socket failed, %s", strerror(errno));
goto error;
}
/* 设置为非阻塞 */
if (!set_non_blocking(server->listen_fd)){
log_error("set_non_blocking failed.");
goto error;
}
/* 设置地址重用 */
if (!set_reuse_addr(server->listen_fd)) {
log_error("set reuse addr failed.");
goto error;
}
/* 绑定端口 */
bzero(&server_addr, sizeof(struct sockaddr_in));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
server_addr.sin_port = htons(server->port);
if (bind(server->listen_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
log_error("bind server addr failed, %s", strerror(errno));
goto error;
}
/* 设置监听 */
if (listen(server->listen_fd, TCP_MAX_LISTEN_NUM) < 0) {
log_error("listen failed, %s", strerror(errno));
goto error;
}
/* 创建epoll句柄 */
server->epoll_fd = epoll_create(TCP_MAX_CONNECT_NUM);
if (server->epoll_fd < 0) {
log_error("epoll_create failed, %s", strerror(errno));
goto error;
}
/* 获取空闲的stream */
stream = get_idle_tcp_stream(server);
if (NULL == stream) {
log_error("get_idle_tcp_stream for listen stream failed.");
goto error;
}
/* 将listen fd加入epoll */
bzero(&event, sizeof(event));
event.data.fd = server->listen_fd;
event.data.ptr = stream;
event.events = EPOLLIN | EPOLLET;
/* 创建listen stream */
tcp_stream_init(server, stream, server->listen_fd, NULL);
stream->snd_cb = NULL;
stream->rcv_cb = accept_cb;
add_stream_into_busy_list(server, stream);
return server;
error:
tcp_server_destroy(server);
return NULL;
}
static int setup_named_sock(char *listen_addr, int listen_port, struct socketlist *socklist)
{
int socknum = 0;
int maxfd = -1;
char pbuf[NI_MAXSERV];
struct addrinfo hints, *ai0, *ai;
int gai;
long flags;
sprintf(pbuf, "%d", listen_port);
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
gai = getaddrinfo(listen_addr, pbuf, &hints, &ai0);
if (gai) {
logerror("getaddrinfo() for %s failed: %s", listen_addr, gai_strerror(gai));
return 0;
}
for (ai = ai0; ai; ai = ai->ai_next) {
int sockfd;
sockfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (sockfd < 0)
continue;
if (sockfd >= FD_SETSIZE) {
logerror("Socket descriptor too large");
close(sockfd);
continue;
}
#ifdef IPV6_V6ONLY
if (ai->ai_family == AF_INET6) {
int on = 1;
setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY,
&on, sizeof(on));
/* Note: error is not fatal */
}
#endif
if (set_reuse_addr(sockfd)) {
logerror("Could not set SO_REUSEADDR: %s", strerror(errno));
close(sockfd);
continue;
}
if (bind(sockfd, ai->ai_addr, ai->ai_addrlen) < 0) {
logerror("Could not bind to %s: %s",
ip2str(ai->ai_family, ai->ai_addr, ai->ai_addrlen),
strerror(errno));
close(sockfd);
continue; /* not fatal */
}
if (listen(sockfd, 5) < 0) {
logerror("Could not listen to %s: %s",
ip2str(ai->ai_family, ai->ai_addr, ai->ai_addrlen),
strerror(errno));
close(sockfd);
continue; /* not fatal */
}
flags = fcntl(sockfd, F_GETFD, 0);
if (flags >= 0)
fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC);
ALLOC_GROW(socklist->list, socklist->nr + 1, socklist->alloc);
socklist->list[socklist->nr++] = sockfd;
socknum++;
if (maxfd < sockfd)
maxfd = sockfd;
}
freeaddrinfo(ai0);
return socknum;
}
int main(int argc, char* argv[])
{
if ((argc != 2))
{
printf("\tusage: ./server <packet_size>\n");
exit(1);
}
int packet_sz = atoi(argv[1]);
printf("Packet size = %d\n", packet_sz);
int listenfd;
if ((listenfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
perror("Create socket error");
exit(1);
}
set_reuse_addr(listenfd);
struct sockaddr_in server_addr;
bzero(&server_addr, sizeof server_addr);
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
server_addr.sin_port = htons(SERVER_PORT);
if (bind(listenfd, (struct sockaddr*)&server_addr, sizeof(struct sockaddr)) == -1)
{
perror("Bind error");
exit(1);
}
if (listen(listenfd, BACKLOG) == -1)
{
perror("Listen error");
exit(1);
}
struct sockaddr_in cli_addr;
socklen_t cli_len = sizeof cli_addr;
int connfd;
if ((connfd = accept(listenfd, (struct sockaddr*)&cli_addr, &cli_len)) == -1)
{
perror("Accept error");
exit(1);
}
printf("Accept a new client.\n");
// mark the socket fd non-blocking
//set_nonblocking(connfd);
signal(SIGPIPE, SIG_IGN);
// send the packet size
packet_sz = htonl(packet_sz);
assert(write(connfd, &packet_sz, sizeof(int)) == sizeof(int));
int sz_ack;
assert(read(connfd, &sz_ack, sizeof(int)) == sizeof(int));
assert(sz_ack == packet_sz);
const int BUF_SIZE = ntohl(packet_sz);
char buf[MAX_BUF_SIZE];
int round_trip = 1000;
int i;
for (i = 0; i < round_trip; ++i)
{
int nread = 0;
while (1)
{
int this_read = read(connfd, buf+nread, BUF_SIZE - nread);
assert(this_read > 0);
nread += this_read;
if (nread == BUF_SIZE)
{
//printf("Finished %d round.\n", i);
break;
}
}
#ifndef NOACK
char ack = 1;
int nwrite = write(connfd, &ack, sizeof ack);
assert(nwrite == 1);
#endif
}
long total = BUF_SIZE * round_trip;
printf("Recieved %ld bytes.\n", total);
close(connfd);
}
int main(int argc, char ** argv)
{
int result;
fd_set read_fd;
struct addrinfo * p_group_address;
struct addrinfo * p_iface_address;
struct addrinfo a_hints;
memset(&a_hints, 0, sizeof(a_hints));
SOCKET s = socket(AF_INET, SOCK_DGRAM, 0);
assert(s>=0);
a_hints.ai_family = AF_INET;
a_hints.ai_protocol = 0;
a_hints.ai_socktype = SOCK_DGRAM;
result = getaddrinfo(MCAST_GROUP_ADDRESS, MCAST_PORT_NUMBER, &a_hints, &p_group_address);
assert(0 == result);
dump_addrinfo(stderr, p_group_address);
a_hints.ai_flags = AI_PASSIVE;
result = getaddrinfo(INTEFACE_BIND_ADDRESS, MCAST_PORT_NUMBER, &a_hints, &p_iface_address);
assert(0 == result);
result = set_reuse_addr(s);
assert(0 == result);
dump_addrinfo(stderr, p_iface_address);
result = join_mcast_group_set_ttl(s, p_group_address, p_iface_address, DEFAULT_TTL);
assert(0 == result);
{
struct sigaction query_action;
memset(&query_action, 0, sizeof(query_action));
query_action.sa_handler = &sigint_handle;
if (sigaction (SIGINT, NULL, &query_action) < 0)
exit(EXIT_FAILURE);
/* sigaction returns -1 in case of error. */
}
while (!g_stop_processing)
{
ssize_t bytes_read;
struct sockaddr recv_from_data;
socklen_t recv_from_length = sizeof(recv_from_data);
struct timeval select_timeout = { 1, 0 };
FD_ZERO(&read_fd);
FD_SET(s, &read_fd);
result = select(s+1, &read_fd, NULL, NULL, &select_timeout);
switch (result)
{
case -1:
break;
case 0:
fprintf(stdout, "%4.4u %s : Timeout\n", __LINE__, __func__);
break;
default:
if (FD_ISSET(s, &read_fd))
{
bytes_read = recvfrom(s,
&g_input_buffer[0],
sizeof(g_input_buffer),
0,
&recv_from_data,
&recv_from_length);
if (bytes_read >= 0)
{
fprintf(stdout, "%4.4u %s : %u %s %u %2.2hhx %2.2hhx..\n", __LINE__, __func__, bytes_read,
inet_ntoa((((struct sockaddr_in *)&recv_from_data)->sin_addr)),
ntohs((((struct sockaddr_in *)&recv_from_data)->sin_port)),
g_input_buffer[0],
g_input_buffer[1]
);
}
else
{
fprintf(stderr, "%4.4u %s : %d %s\n", __LINE__, __func__, errno, strerror(errno));
}
}
break;
}
}
return 0;
}
static int socksetup(char *listen_addr, int listen_port, int **socklist_p)
{
int socknum = 0, *socklist = NULL;
int maxfd = -1;
char pbuf[NI_MAXSERV];
struct addrinfo hints, *ai0, *ai;
int gai;
long flags;
sprintf(pbuf, "%d", listen_port);
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
gai = getaddrinfo(listen_addr, pbuf, &hints, &ai0);
if (gai)
die("getaddrinfo() failed: %s", gai_strerror(gai));
for (ai = ai0; ai; ai = ai->ai_next) {
int sockfd;
sockfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (sockfd < 0)
continue;
if (sockfd >= FD_SETSIZE) {
logerror("Socket descriptor too large");
close(sockfd);
continue;
}
#ifdef IPV6_V6ONLY
if (ai->ai_family == AF_INET6) {
int on = 1;
setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY,
&on, sizeof(on));
/* Note: error is not fatal */
}
#endif
if (set_reuse_addr(sockfd)) {
close(sockfd);
continue;
}
if (bind(sockfd, ai->ai_addr, ai->ai_addrlen) < 0) {
close(sockfd);
continue; /* not fatal */
}
if (listen(sockfd, 5) < 0) {
close(sockfd);
continue; /* not fatal */
}
flags = fcntl(sockfd, F_GETFD, 0);
if (flags >= 0)
fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC);
socklist = xrealloc(socklist, sizeof(int) * (socknum + 1));
socklist[socknum++] = sockfd;
if (maxfd < sockfd)
maxfd = sockfd;
}
freeaddrinfo(ai0);
*socklist_p = socklist;
return socknum;
}