void EPosixClientSocket::eDisconnect()
{
if ( m_fd >= 0 )
// close socket
SocketClose( m_fd);
m_fd = -1;
// uninitialize Winsock DLL (only for Windows)
SocketsDestroy();
eDisconnectBase();
}
EClientSocket::~EClientSocket()
{
if( m_fd != -2)
SocketsDestroy();
}
/**
* Same as eConnect() except you may the specify address family here (default is
* AF_UNSPEC).
* We couldn't just add the new family arg to eConnect because the original one
* is pure virtual declared in EClientSocketBase. Thanks C++ design crap ...
*/
bool EPosixClientSocket::eConnect2( const char *host, unsigned int port,
int clientId, int family )
{
// already connected?
if( m_fd >= 0) {
assert(false); // for now we don't allow that
return true;
}
// initialize Winsock DLL (only for Windows)
if ( !SocketsInit()) {
// Does this set errno?
getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(),
"Initializing Winsock DLL failed.");
return false;
}
// use local machine if no host passed in
if ( !( host && *host)) {
host = "127.0.0.1";
}
// starting to connect to server
struct addrinfo *aitop;
int s = resolveHost( host, port, family, &aitop );
if( s != 0 ) {
SocketsDestroy();
const char *err;
#ifdef HAVE_GETADDRINFO
err = gai_strerror(s);
#else
err = "Invalid address, hostname resolving not supported.";
#endif
getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
return false;
}
int con_errno = 0;
for( struct addrinfo *ai = aitop; ai != NULL; ai = ai->ai_next ) {
// create socket
m_fd = socket(ai->ai_family, ai->ai_socktype, 0);
if( m_fd < 0) {
con_errno = errno;
continue;
}
/* Set socket O_NONBLOCK. If wanted we could handle errors
(portability!) We could even make O_NONBLOCK optional. */
int sn = set_socket_nonblock( m_fd );
assert( sn == 0 );
// try to connect
if( timeout_connect( m_fd, ai->ai_addr, ai->ai_addrlen ) < 0 ) {
con_errno = errno;
SocketClose(m_fd);
m_fd = -1;
continue;
}
/* successfully connected */
break;
}
freeaddrinfo(aitop);
/* connection failed, tell the error which happened in our last try */
if( m_fd < 0 ) {
const char *err = strerror(con_errno);
SocketsDestroy();
getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
return false;
}
// set client id
setClientId( clientId);
errno = 0;
onConnectBase();
if( !isOutBufferEmpty() ) {
/* For now we consider it as error if it's not possible to send an
integer string within a single tcp packet. Here we don't know weather
::send() really failed or not. If so then we hopefully still have
it's errno set.*/
const char *err = (errno != 0) ? strerror(errno)
: "Sending client id failed.";
eDisconnect();
getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
return false;
}
if( wait_socket( m_fd, WAIT_READ ) <= 0 ) {
const char *err = (errno != 0) ? strerror(errno) : strerror(ENODATA);
eDisconnect();
getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
return false;
}
while( !isConnected() ) {
assert( isSocketOK() ); // need to be handled if send() would destroy it
if ( !checkMessagesConnect()) {
const char *err = (errno != 0) ? strerror(errno)
: "The remote host closed the connection.";
eDisconnect();
getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
return false;
}
}
// successfully connected
return true;
}
bool EPosixClientSocket::eConnect( const char *host, unsigned int port, int clientId)
{
// reset errno
errno = 0;
// already connected?
if( m_fd >= 0) {
errno = EISCONN;
getWrapper()->error( NO_VALID_ID, ALREADY_CONNECTED.code(), ALREADY_CONNECTED.msg());
return false;
}
// initialize Winsock DLL (only for Windows)
if ( !SocketsInit()) {
return false;
}
// create socket
m_fd = socket(AF_INET, SOCK_STREAM, 0);
// cannot create socket
if( m_fd < 0) {
// uninitialize Winsock DLL (only for Windows)
SocketsDestroy();
getWrapper()->error( NO_VALID_ID, FAIL_CREATE_SOCK.code(), FAIL_CREATE_SOCK.msg());
return false;
}
// use local machine if no host passed in
if ( !( host && *host)) {
host = "127.0.0.1";
}
// starting to connect to server
struct sockaddr_in sa;
memset( &sa, 0, sizeof(sa));
sa.sin_family = AF_INET;
sa.sin_port = htons( port);
sa.sin_addr.s_addr = inet_addr( host);
// try to connect
if( (connect( m_fd, (struct sockaddr *) &sa, sizeof( sa))) < 0) {
// error connecting
// uninitialize Winsock DLL (only for Windows)
SocketsDestroy();
getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), CONNECT_FAIL.msg());
return false;
}
// set client id
setClientId( clientId);
onConnectBase();
while( isSocketOK() && !isConnected()) {
if ( !checkMessages()) {
// uninitialize Winsock DLL (only for Windows)
SocketsDestroy();
getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), CONNECT_FAIL.msg());
return false;
}
}
// successfully connected
return true;
}