error_code asio_network_provider::start(rpc_channel channel, int port, bool client_only)
{
if (_acceptor != nullptr)
return ERR_SERVICE_ALREADY_RUNNING;
dassert(channel == RPC_CHANNEL_TCP || channel == RPC_CHANNEL_UDP, "invalid given channel %s", channel.to_string());
_address = end_point(boost::asio::ip::host_name().c_str(), port);
if (!client_only)
{
auto v4_addr = boost::asio::ip::address_v4::any(); //(ntohl(_address.ip));
::boost::asio::ip::tcp::endpoint ep(v4_addr, _address.port);
try
{
_acceptor.reset(new boost::asio::ip::tcp::acceptor(_io_service, ep, true));
do_accept();
}
catch (boost::system::system_error& err)
{
printf("boost asio listen on port %u failed, err: %s\n", port, err.what());
return ERR_ADDRESS_ALREADY_USED;
}
}
return ERR_OK;
}
server::server(const std::string& address, const std::string& port,
const std::string& doc_root, std::size_t pool_size) :
io_service_pool_(pool_size),
signals_(io_service_pool_.get_io_service()),
acceptor_(io_service_pool_.get_io_service()),
connection_manager_(),
request_handler_(doc_root) {
signals_.add(SIGINT);
signals_.add(SIGTERM);
#if defined(SIGQUIT)
signals_.add(SIGQUIT);
#endif // defined(SIGQUIT)
do_await_stop();
boost::asio::ip::tcp::resolver resolver(acceptor_.get_io_service());
boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(
{ address, port });
acceptor_.open(endpoint.protocol());
acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(1));
acceptor_.bind(endpoint);
acceptor_.listen();
do_accept();
}
/// Construct the server to listen on the specified TCP address and port, and
/// serve up files from the given directory.
explicit server(const std::string& address, const std::string& port,
const request_handler_type& handler)
: io_service_(),
signals_(io_service_),
acceptor_(io_service_),
connection_manager_(),
socket_(io_service_),
request_handler_(handler)
{
// Register to handle the signals that indicate when the server should exit.
// It is safe to register for the same signal multiple times in a program,
// provided all registration for the specified signal is made through Asio.
signals_.add(SIGINT);
signals_.add(SIGTERM);
#if defined(SIGQUIT)
signals_.add(SIGQUIT);
#endif // defined(SIGQUIT)
do_await_stop();
// Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
boost::asio::ip::tcp::resolver resolver(io_service_);
boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve({address, port});
acceptor_.open(endpoint.protocol());
acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor_.bind(endpoint);
acceptor_.listen();
do_accept();
}
explicit
ws_echo_server(
std::ostream& log,
kind k = kind::sync)
: log_(log)
, work_(ioc_.get_executor())
, ts_(ioc_)
, ws_(ts_)
{
beast::websocket::permessage_deflate pmd;
pmd.server_enable = true;
pmd.server_max_window_bits = 9;
pmd.compLevel = 1;
ws_.set_option(pmd);
switch(k)
{
case kind::sync:
t_ = std::thread{[&]{ do_sync(); }};
break;
case kind::async:
t_ = std::thread{[&]{ ioc_.run(); }};
do_accept();
break;
case kind::async_client:
t_ = std::thread{[&]{ ioc_.run(); }};
break;
}
}
server::server(boost::asio::io_service& io_service, short port, thread_pool& pool)
: _acceptor(io_service, boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), port))
, _socket(io_service)
, _pool(pool)
{
do_accept();
}
void HttpServer::asyncAccept(boost::system::error_code ec)
{
if (!_acceptor.is_open())
{
std::cout << " Acceptor is not open to accept any new connection. " << std::endl;
return;
}
if (!ec)
{
// Create new HttpClientConnection using the above socket
std::cout << " New Client connection created. " << std::endl;
HttpClientConnection::SmartPtr clientConn(new HttpClientConnection(_socket, _clientManager , _reqHandler));
_clientManager->start(clientConn);
_socket = boost::shared_ptr<boost::asio::ip::tcp::socket>(new boost::asio::ip::tcp::socket(_ioService));
}
else
{
std::cout << " Error while accepting : " << ec.message() << std::endl;
}
// Ready to accept new request
do_accept();
}
server::server(short port)
: io_service_()
, acceptor_(io_service_, tcp::endpoint(tcp::v4(), port))
, socket_(io_service_)
{
do_accept();
}
int do_server(int port, int *ret, int (*cb)(), char *context)
{
int sock;
char *name;
int accept_socket;
int i;
if (!init_server(&accept_socket,port)) return(0);
if (ret != NULL)
{
*ret=accept_socket;
/* return(1);*/
}
for (;;)
{
if (do_accept(accept_socket,&sock,&name) == 0)
{
SHUTDOWN(accept_socket);
return(0);
}
i=(*cb)(name,sock, context);
if (name != NULL) OPENSSL_free(name);
SHUTDOWN2(sock);
if (i < 0)
{
SHUTDOWN2(accept_socket);
return(i);
}
}
}
static void
set_active (GSocketService *service, gboolean active)
{
gboolean notify = FALSE;
active = !!active;
G_LOCK (active);
if (active != service->priv->active)
{
service->priv->active = active;
notify = TRUE;
if (active)
{
if (service->priv->outstanding_accept)
g_cancellable_cancel (service->priv->cancellable);
else
do_accept (service);
}
else
{
if (service->priv->outstanding_accept)
g_cancellable_cancel (service->priv->cancellable);
}
}
G_UNLOCK (active);
if (notify)
g_object_notify (G_OBJECT (service), "active");
}
// Start accepting incoming connections
void
run()
{
if(! acceptor_.is_open())
return;
do_accept();
}
server::server(/*const std::string& address, */const std::string& port,
const std::string& doc_root)
: io_service_(),
signals_(io_service_),
acceptor_(io_service_),
connection_manager_(),/*构造一个管理连接的对象*/
socket_(io_service_),
request_handler_(doc_root)
{
// Register to handle the signals that indicate when the server should exit.
// It is safe to register for the same signal multiple times in a program,
// provided all registration for the specified signal is made through Asio.
signals_.add(SIGINT); //添加退出时信号
signals_.add(SIGTERM);
#if defined(SIGQUIT)
signals_.add(SIGQUIT);
#endif // defined(SIGQUIT)
do_await_stop(); ////注册退出时执行的函数，信号和槽机制应该
//打开端口，监听套接字
// Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
boost::asio::ip::tcp::resolver resolver(io_service_);
//boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve({address, port});
boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve({ boost::asio::ip::tcp::v4(), port });
acceptor_.open(endpoint.protocol());
acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor_.bind(endpoint);
acceptor_.listen();
std::cout << "service started" << std::endl;
//，并将收到的套接字交给connection_manager_处理
do_accept();
}
void mloop()
{
fd_set rfds;
fd_set wfds;
while(loop_flag){
FD_ZERO(&rfds);
FD_ZERO(&wfds);
rfdset(moption.mcsocket, &rfds);
wfdset(moption.mcsocket, &wfds);
cfdset(moption.comm, &rfds, &wfds);
if(do_select(&rfds, &wfds)){
do_pong();
do_free();
}else{
do_pong();
do_recv();
do_send();
do_accept(moption.comm, &rfds);
do_comexe(moption.comm, &rfds);
do_exechk(moption.comm);
}
if(log_level != moption.loglevel){
lprintf(0, "%s: loglevel change %d to %d\n", __func__, moption.loglevel, log_level);
moption.loglevel = log_level;
}
}
}
static coro_sock* sock_accept_inner(coro_sock *sock, struct sockaddr *addr, socklen_t *len)
{
event_base *base = __g_coroutine_ctx->base;
uthread_t cur = coro_current_uthread();
struct event * ev = (struct event *)coro_uthread_get_data(cur);
if ( ev == NULL ) {
ev = event_new(base, sock->sock, EV_READ | EV_PERSIST, sock_raw_accept_event, (void *)__g_coroutine_ctx);
coro_uthread_set_data(cur, ev, (free_data)event_free);
}
event_add(ev, NULL);
// 如果accept操作是主线程操作的，我们应该resume IO协程
// 让IO协程帮我们处理事件，完成accept通知
// 如果accept操作是协程处理的，那么切回协程
// 参看sock_accept_event_cb的切换规则，
// 因为WAIT_ACCEPT状态只有sock_raw_accept_event才能解除
// 因此这里这里一定是sock_raw_accept_event切换回来
// 因此，resume和yield返回值一定是sock_raw_accept_event返回的socket fd
int ret = coro_schedule_uthread(cur, 0);
event_del(ev);
int s = sock->sock;
coro_sock *client = NULL;
if ( ret >= 0 ) {
int c = do_accept(s, addr, len);
if ( c >= 0 ) {
bufferevent *bev = bufferevent_socket_new(base, c, BEV_OPT_CLOSE_ON_FREE);
client = sock_assign(c, bev);
bufferevent_setcb(bev, sock_buffer_read_event, sock_buffer_write_event, sock_buffer_error_event, (void *)client);
bufferevent_enable(bev, EV_READ | EV_WRITE);
}
}
return client;
}
void handle_trigger_io()
{
struct msg_header hdr;
struct trigger_service_params params;
int ret;
int client_fd;
client_fd = do_accept(trigger_fd);
if (client_fd < 0)
return;
hdr.len = sizeof(params);
ret = read(client_fd, ¶ms, sizeof(params));
if (ret == sizeof(params)) {
hdr.type = MSG_TRIGGER_SERVICE;
snprintf(params.request_id.ident, sizeof(params.request_id), "SOCKET%d", client_fd);
if (libvchan_send(ctrl_vchan, &hdr, sizeof(hdr)) < 0)
handle_vchan_error("write hdr");
if (libvchan_send(ctrl_vchan, ¶ms, sizeof(params)) < 0)
handle_vchan_error("write params");
}
if (ret <= 0) {
close(client_fd);
}
/* do not close client_fd - we'll need it to send the connection details
* later (when dom0 accepts the request) */
}
bool pipeline_acceptor::listen( const tcode::io::ip::address& bind_addr ){
if ( _acceptor.listen( bind_addr )){
do_accept();
return true;
}
return false;
}
int net_loop(int parent)
{
int nfds,connfd;
struct epoll_event ev;
nfds = epoll_wait(einfo.epollfd, einfo.events, 100, 100);
for( uint32_t loop=0 ; loop<nfds ; loop++ ){
if(listenfd == einfo.events[loop].data.fd){
std::cout<<"ready accept isparent:"<<parent<<std::endl;
while(!do_accept(listenfd));
}else{
if (einfo.events[loop].events & EPOLLERR) {
printf("EPOLLERR: client linkdown:fd %u parent %u\n",einfo.events[loop].data.fd,parent);
close(einfo.events[loop].data.fd);
continue;
}
if (einfo.events[loop].events & EPOLLHUP) {
printf("EPOLLHUP: client linkdown:fd %u parent %u\n",einfo.events[loop].data.fd,parent);
close(einfo.events[loop].data.fd);
continue;
}
if (einfo.events[loop].events & EPOLLPRI) {
printf("EPOLLPRI: client linkdown:fd %u parent %u\n",einfo.events[loop].data.fd,parent);
close(einfo.events[loop].data.fd);
continue;
}
if (einfo.events[loop].events & EPOLLIN) {
printf("\nEPOLLIN start:fd=%u parent %u\n",einfo.events[loop].data.fd, parent);
char buf[512];
memset(buf, 0, sizeof(buf));
bool goon=false ,tag=true;
int len=0;
if(parent){
recv_from_cli(einfo.events[loop].data.fd ,tag);
}else{
read_from_parent(einfo.events[loop].data.fd,tag);
}
if(tag){
ev.data.fd=einfo.events[loop].data.fd;
ev.events=EPOLLOUT | EPOLLET;
if (epoll_ctl(einfo.epollfd, EPOLL_CTL_MOD, einfo.events[loop].data.fd, &ev) == -1) {
std::cerr<<"epoll_ctl2";
return -1;
}
}
printf("EPOLLIN end:\n");
}else if (einfo.events[loop].events & EPOLLOUT) {
printf("EPOLLOUT start: fd:%u parent:%u\n",einfo.events[loop].data.fd,parent);
write(einfo.events[loop].data.fd, "nihao", sizeof("nihao"));
ev.data.fd=einfo.events[loop].data.fd;
ev.events=EPOLLIN | EPOLLET;
if (epoll_ctl(einfo.epollfd, EPOLL_CTL_MOD, einfo.events[loop].data.fd , &ev) == -1) {
std::cerr<<"epoll_ctl3";
return -1;
}
printf("EPOLLOUT end:\n");
}
}
}
return 0;
}
void server::do_accept() {
try {
socket_.reset(
new boost::asio::ip::tcp::socket(
io_service_pool_.get_io_service()));
acceptor_.async_accept(*socket_,
[this](boost::system::error_code ec)
{
if (!acceptor_.is_open())
{
return;
}
if (!ec)
{
connection_manager_.start(std::make_shared<connection>(
std::move(*socket_), connection_manager_, request_handler_));
}
do_accept();
});
} catch (std::exception & ex) {
std::cout << "do_accept error:" << ex.what() << std::endl;
return;
}
}
/* handle_connection: handle the connected clients
* @listenfd: the socket used to accept connections
*
* */
void handle_connection(int listenfd)
{
/* the number of readable fds in the pollfd array */
int nready, i;
/* receive buffer */
buffer_t recvbuf;
memset(&recvbuf,0,sizeof(buffer_t));
/* set the listenfd to non-block */
//setnonblock(listenfd);
/* epollfd set to monitor the related events */
int epollfd;
if ( (epollfd = epoll_create(EPOLL_SIZE)) < 0 )
{
perror_exit("epoll create error");
}
/* epoll event array */
struct epoll_event events[EPOLL_EVENTS];
/* add the listen socket to epoll set */
int state = EPOLLIN;
add_epoll_event(epollfd,listenfd,state);
while( 1 )
{
/* obtain the ready sockets from the epoll set */
if ( (nready = epoll_wait(epollfd,events,EPOLL_EVENTS,INFTIM)) < 0)
{
perror_exit("epoll wait error");
}
/* traverse the ready sockets */
for (i = 0; i < nready; ++i)
{
int fd = events[i].data.fd;
/* listenfd is ready */
if ( fd == listenfd && (events[i].events & EPOLLIN) )
{
do_accept(listenfd, epollfd);
}
/* connected sockets are ready */
else if ( events[i].events & EPOLLIN )
{
do_read(fd,epollfd,&recvbuf);
}
/* read the data from the connected socket and echo it also */
else if ( events[i].events & EPOLLOUT )
{
do_write(fd,epollfd,&recvbuf);
}
}
}
}
async_asio_echo_serv(short port, uint32_t packet_size = 64,
uint32_t pool_size = std::thread::hardware_concurrency())
: io_service_pool_(pool_size),
acceptor_(io_service_pool_.get_first_io_service(), ip::tcp::endpoint(ip::tcp::v4(), port)),
packet_size_(packet_size)
{
do_accept();
}
void server::acceptor_callback(boost::system::error_code ec)
{
if (!ec)
{
std::make_shared<session>(std::move(_socket), boost::ref(_pool))->start();
}
do_accept();
}
int do_server(int port, int type, int *ret, int (*cb)(char *hostname, int s, int stype, unsigned char *context), unsigned char *context, int naccept)
{
int sock;
char *name = NULL;
int accept_socket = 0;
int i;
if (!init_server(&accept_socket,port,type)) return(0);
if (ret != NULL)
{
*ret=accept_socket;
/* return(1);*/
}
for (;;)
{
if (type==SOCK_STREAM)
{
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
if (do_accept(accept_socket,&sock,NULL) == 0)
#else
if (do_accept(accept_socket,&sock,&name) == 0)
#endif
{
SHUTDOWN(accept_socket);
return(0);
}
}
else
sock = accept_socket;
i=(*cb)(name,sock, type, context);
if (name != NULL) OPENSSL_free(name);
if (type==SOCK_STREAM)
SHUTDOWN2(sock);
if (naccept != -1)
naccept--;
if (i < 0 || naccept == 0)
{
SHUTDOWN2(accept_socket);
return(i);
}
}
}
static void do_forward(Connection *Conn,PCStr(lport),PCStr(peername),int shared,int svsock,int priority,int fromC,int toC)
{ int cls,svs;
CStr(host,MaxHostNameLen);
int port;
CStr(opt,256);
CStr(clntname,1024);
CStr(servname,1024);
CStr(sockname,1024);
if( svsock < 0 ){
SockPrintf(toC,"%s %d no socket to accept\r\n",VER,NO_ACCEPT);
return;
}
SockPrintf(toC,"%s %d forwarding start.\r\n",VER,OK_FORWARD1);
opt[0] = 0;
Xsscanf(peername,"%[^:]:%d %s",AVStr(host),&port,AVStr(opt));
for(;;){
cls = do_accept(lport,"",shared,priority,fromC,toC);
if( cls < 0 ){
if( 0 < PollIn(fromC,1) ){
if( intcom("",fromC,toC,NULL,NULL) == 0 )
continue;
else break;
}
SockPrintf(toC,"%s %d could not accept at %s\r\n",
VER,NO_ACCEPT,lport);
break;
}
getpairName(cls,AVStr(sockname),AVStr(clntname));
SockPrintf(toC,"%s %d accepted %s %s\r\n",VER,OK_ACCEPT,
sockname,clntname);
svs = Socket1("VSAPdata",NEWSOCK,VStrANYPORT,host,port, 0,NULL,0);
if( svs < 0 ){
SockPrintf(toC,"%s %d could not connect to %s\r\n",
VER,NO_CONNECT,peername);
break;
}else{
if( strstr(opt,"TRACE") ){
getpairName(svs,AVStr(sockname),AVStr(servname));
SockPrintf(cls,"%s %d %s %s connected.\r\n",
VER,OK_CONNECT,sockname,servname);
SockPrintf(svs,"%s %d %s %s accepted.\r\n",
VER,OK_ACCEPT,sockname,clntname);
}
relay2_cntl(60*1000,cls,svs,svs,cls,fromC,toC,(IFUNCP)intcom,0);
close(svs);
SockPrintf(toC,"%s %d relay done.\r\n",VER,OK_RELAYED);
}
close(cls);
}
SockPrintf(toC,"%s %d forwarding done.\r\n",VER,OK_FORWARD2);
}
HTTPServer& listen(const std::string& address, const std::string& port, HttpsConfig cfg)
{
boost::asio::spawn(
io_service_pool_.get_io_service(),
[this, address, port, cfg](boost::asio::yield_context yield)
{
do_accept(address, port, cfg, yield);
});
return *this;
}
void log_server::do_accept()
{
_acceptor.async_accept(_socket, [this](boost::system::error_code ec)
{
if (!ec)
std::make_shared<session>(std::move(_socket), *this, _id++)->start();
do_accept();
}
);
}
server::server(int tcpport, int udpport)
: m_acceptor(m_io, tcp::endpoint(boost::asio::ip::tcp::v4(), tcpport))
, m_tcpsocket(m_io)
{
m_udpserver = boost::make_shared<udpserver>(m_io, udpport);
m_roomprovider = boost::make_shared<room_provider>(m_io);
//m_roomprovider->init_rooms();
do_accept();
}
int main (int argc, char **argv)
{
int fd_cli = -1, fd_lis = -1, fd_srv = -1;
int port = 5190;
fd_lis = do_listen (&port);
while (1)
{
printf ("Waiting for connections... (login)\n");
fd_cli = do_accept (fd_lis);
fd_srv = do_server ("login.icq.com", 5190);
do_exchange (fd_cli, fd_srv, port, argc < 2);
printf ("Waiting for connections... (session)\n");
fd_cli = do_accept (fd_lis);
fd_srv = do_server (use_host, use_port);
do_exchange (fd_cli, fd_srv, port, argc < 2);
fflush (stdout);
}
return 0;
}
void server::do_accept()
{
m_acceptor.async_accept(m_tcpsocket, [this](boost::system::error_code ec)
{
if (!ec)
{
boost::make_shared<user_session>(std::move(m_tcpsocket),m_roomprovider)->start();
}
do_accept();
});
}
Server::Server(AllConfig all_config)
: config{std::move(all_config.server)}
, io_service{}
, signals{io_service, SIGINT, SIGTERM}
, endpoint{config.connection_info.socket}
, acceptor{io_service, endpoint}
, socket{io_service}
, accumulator{std::move(all_config.accumulator)}
{
do_await_stop();
do_accept();
}
void handle_new_client()
{
int fd = do_accept(qrexec_daemon_unix_socket_fd);
if (fd >= MAX_CLIENTS) {
fprintf(stderr, "too many clients ?\n");
exit(1);
}
clients[fd].state = CLIENT_CMDLINE;
buffer_init(&clients[fd].buffer);
if (fd > max_client_fd)
max_client_fd = fd;
}
int main(int argc, char *argv[]) {
//Read the configuration file, which means the number of listeners should be dynamic
int n_listeners;
std::vector<int> port_list;
std::vector<std::string> cmd_list;
read_config(std::cin,n_listeners,port_list,cmd_list);
int* listen_sockfds = new int[n_listeners];
pollfd* pollfds = new pollfd[n_listeners];
/* Set up SIGCHLD handler with SA_NOCLDWAIT (option 3) */
setup_sa_nocldwait( );
/* Set up our listening sockets. */
setup_listeners(listen_sockfds, n_listeners, port_list);
/* Set up our pollfds. */
memset(pollfds, 0, n_listeners*sizeof(struct pollfd));
for (int i = 0; i < n_listeners; i++) {
pollfds[i].fd = listen_sockfds[i];
pollfds[i].events = POLLIN;
}
/* Loop infinitely, accepting any connections we get. */
for (;;) {
/* Call select() and handle errors. */
if (poll(pollfds, n_listeners, -1) == -1) {
if (errno == EINTR) {
continue;
} else {
perror("poll");
return 1;
}
}
/* Iterate through fds, finding any that are ready. */
for (int i = 0; i < n_listeners; i++) {
if (pollfds[i].revents & POLLIN) {
/* accept and fork the child process */
do_accept(listen_sockfds[i],cmd_list[i]);
}
}
}
delete[] listen_sockfds;
delete[] pollfds;
}