namespace libt2n
{
-socket_server::socket_server(int port, const char* ip)
+/** @brief create a new tcp-based server
+ @param port tcp port you want to listen on
+ @param ip the local ip you want to listen on. "0.0.0.0" means all local ips (default).
+*/
+socket_server::socket_server(int port, const std::string& ip)
: server(), socket_handler(0,tcp_s)
{
- // TODO
+ /* Create the socket. */
+ sock = socket (PF_INET, SOCK_STREAM, 0);
+ if (sock < 0)
+ {
+ string err="error opening socket: ";
+ err+=strerror(errno);
+ log(error, err);
+ throw t2n_server_error(err);
+ }
+
+ set_socket_options(sock);
+
+ /* Give the socket a name. */
+ struct sockaddr_in sockaddr;
+ sockaddr.sin_family = AF_INET;
+ sockaddr.sin_port = htons(port);
+
+ if (inet_aton(ip.c_str(),&sockaddr.sin_addr) == 0)
+ {
+ string err="failed listening on invalid ip ";
+ err+=ip;
+ log(error, err);
+ throw t2n_server_error(err);
+ }
+
+ if (bind (sock, (struct sockaddr *) &sockaddr, sizeof (sockaddr)) < 0)
+ {
+ string err="error binding socket: ";
+ err+=strerror(errno);
+ log(error, err);
+ throw t2n_server_error(err);
+ }
+
+ start_listening();
}
-socket_server::socket_server(const char* path, mode_t filemode, const char* user, const char* group)
+/** @brief create a new unix-socked-based server
+ @param path path of the socket
+ @param filemode permissions you want to open the socket with
+ @param user local username for the socket
+ @param group local groupname for the socket
+*/
+socket_server::socket_server(const std::string& path, mode_t filemode, const std::string& user, const std::string& group)
: server(), socket_handler(0,unix_s)
{
unix_path=path;
throw t2n_server_error(err);
}
- struct passwd *socket_user = getpwnam (user);
- if (socket_user == NULL)
+ if (!user.empty() && !group.empty())
{
- string err="error getting socket user: ";
- err+=strerror(errno);
- log(error, err);
- throw t2n_server_error(err);
- }
+ // TODO maybe use current user/group if one of them is empty
- struct group *socket_group = getgrnam (group);
- if (socket_group == NULL)
- {
- string err="error getting socket group: ";
- err+=strerror(errno);
- log(error, err);
- throw t2n_server_error(err);
+ struct passwd *socket_user = getpwnam (user.c_str());
+ if (socket_user == NULL)
+ {
+ string err="error getting socket user: ";
+ err+=strerror(errno);
+ log(error, err);
+ throw t2n_server_error(err);
+ }
+
+ struct group *socket_group = getgrnam (group.c_str());
+ if (socket_group == NULL)
+ {
+ string err="error getting socket group: ";
+ err+=strerror(errno);
+ log(error, err);
+ throw t2n_server_error(err);
+ }
+
+ if (chown (unix_name.sun_path, socket_user->pw_uid, socket_group->gr_gid) != 0)
+ {
+ string err="error changing socket ownership: ";
+ err+=strerror(errno);
+ log(error, err);
+ throw t2n_server_error(err);
+ }
}
- if (chown (unix_name.sun_path, socket_user->pw_uid, socket_group->gr_gid) != 0)
- {
- string err="error changing socket ownership: ";
- err+=strerror(errno);
- log(error, err);
- throw t2n_server_error(err);
- }
+ start_listening();
+}
+
+socket_server::~socket_server()
+{
+ socket_handler::close();
+ if (get_type()==unix_s)
+ unlink(unix_path.c_str());
+}
+
+/// start listening on a new server socket (called by the constructors)
+void socket_server::start_listening()
+{
if (listen (sock, 5) < 0)
{
string err="error listening to socket: ";
FD_SET (sock, &connection_set);
}
-socket_server::~socket_server()
-{
- if (get_type()==unix_s)
- unlink(unix_path.c_str());
-}
-
+/// handle a new connection from a client
void socket_server::new_connection()
{
struct sockaddr_un clientname;
return;
}
-void socket_server::fill_buffer(long long usec_timeout)
+bool socket_server::fill_buffer(long long usec_timeout)
{
fd_set used_fdset=connection_set;
}
// check all connections for pending data
- fill_connection_buffers();
+ return fill_connection_buffers();
}
- return;
+ return false;
}
-void socket_server::fill_connection_buffers()
+/// call fill_buffer() on all connections, called from fill_buffer()
+bool socket_server::fill_connection_buffers()
{
+ bool data_found;
+
std::map<unsigned int, server_connection*>::iterator ie=connections.end();
for(std::map<unsigned int, server_connection*>::iterator i=connections.begin(); i != ie; i++)
- if (!i->second->is_closed())
- i->second->fill_buffer();
+ if (!i->second->server_connection::is_closed())
+ if (i->second->fill_buffer(0))
+ data_found=true;
+
+ return data_found;
}
+/// remove the socket of a connection after the connection has been closed
void socket_server::remove_connection_socket(int sock)
{
FD_CLR(sock, &connection_set);
}
+void socket_server_connection::log(log_level_values level, const char* message)
+{
+ if(my_server)
+ {
+ ostringstream msg;
+ msg << "connection id " << get_id() << ": " << message;
+ my_server->log(level,msg.str().c_str());
+ }
+}
+
+/// close this connection. complete data waiting in the buffer can still be retrieved.
void socket_server_connection::close()
{
- if (!is_closed())
+ if (!server_connection::is_closed())
{
socket_handler::close();
server_connection::close();