IpEndpointName LocalEndpointFor(const IpEndpointName &remoteEndpoint) const
{
assert(isBound_);
// first connect the socket to the remote server
struct sockaddr_in connectSockAddr;
SockaddrFromIpEndpointName(connectSockAddr, remoteEndpoint);
if (connect(socket_, (struct sockaddr *)&connectSockAddr, sizeof(connectSockAddr)) < 0)
{
throw std::runtime_error("unable to connect udp socket\n");
}
// get the address
struct sockaddr_in sockAddr;
memset((char *)&sockAddr, 0, sizeof(sockAddr));
socklen_t length = sizeof(sockAddr);
if (getsockname(socket_, (struct sockaddr *)&sockAddr, &length) < 0)
{
throw std::runtime_error("unable to getsockname\n");
}
if (isConnected_)
{
// reconnect to the connected address
if (connect(socket_, (struct sockaddr *)&connectedAddr_, sizeof(connectedAddr_)) < 0)
{
throw std::runtime_error("unable to connect udp socket\n");
}
}
else
{
// unconnect from the remote address
struct sockaddr_in unconnectSockAddr;
memset((char *)&unconnectSockAddr, 0, sizeof(unconnectSockAddr));
unconnectSockAddr.sin_family = AF_UNSPEC;
// address fields are zero
int connectResult = connect(socket_, (struct sockaddr *)&unconnectSockAddr, sizeof(unconnectSockAddr));
if (connectResult < 0 && errno != EAFNOSUPPORT)
{
throw std::runtime_error("unable to un-connect udp socket\n");
}
}
return IpEndpointNameFromSockaddr(sockAddr);
}
void Bind( const IpEndpointName& localEndpoint )
{
struct sockaddr_in bindSockAddr;
SockaddrFromIpEndpointName( bindSockAddr, localEndpoint );
{
IpEndpointName temp = IpEndpointNameFromSockaddr(bindSockAddr);
char address[30];
temp.AddressAndPortAsString(address);
}
if (bind(socket_, (struct sockaddr *)&bindSockAddr, sizeof(bindSockAddr)) < 0) {
throw std::runtime_error("unable to bind udp socket\n");
}
isBound_ = true;
}
IpEndpointName LocalEndpointFor( const IpEndpointName& remoteEndpoint ) const
{
assert( isBound_ );
// first connect the socket to the remote server
struct sockaddr_in connectSockAddr;
SockaddrFromIpEndpointName( connectSockAddr, remoteEndpoint );
if (connect(socket_, (struct sockaddr *)&connectSockAddr, sizeof(connectSockAddr)) < 0) {
throw std::runtime_error("unable to connect udp socket\n");
}
// get the address
struct sockaddr_in sockAddr;
memset( (char *)&sockAddr, 0, sizeof(sockAddr ) );
socklen_t length = sizeof(sockAddr);
if (getsockname(socket_, (struct sockaddr *)&sockAddr, &length) < 0) {
throw std::runtime_error("unable to getsockname\n");
}
if ( isConnected_ ) {
// reconnect to the connected address
if (connect(socket_, (struct sockaddr *)&connectedAddr_, sizeof(connectedAddr_)) < 0) {
throw std::runtime_error("unable to connect udp socket\n");
}
} else{
// unconnect from the remote address
struct sockaddr_in unconnectSockAddr;
SockaddrFromIpEndpointName( unconnectSockAddr, IpEndpointName() );
if( connect(socket_, (struct sockaddr *)&unconnectSockAddr, sizeof(unconnectSockAddr)) < 0
&& WSAGetLastError() != WSAEADDRNOTAVAIL ){
throw std::runtime_error("unable to un-connect udp socket\n");
}
}
return IpEndpointNameFromSockaddr( sockAddr );
}
