TCPIP_UDP_ServerOpen Function

UDP_SOCKET TCPIP_UDP_ServerOpen(IP_ADDRESS_TYPE addType, UDP_PORT localPort, IP_MULTI_ADDRESS* localAddress); 

• INVALID_SOCKET - No sockets of the specified type were available to be opened or parameter error.

• A UDP_SOCKET handle - Save this handle and use it when calling all other UDP APIs.

Provides a unified method for opening UDP server sockets.

Sockets and user threads protection For efficiency reasons, there is NO PROTECTION for each individual API call except to Open and Close sockets! What it means is that:

• the user application should close all its sockets before issuing a stack/if down command The stack manager takes care of the internally used sockets

• A socket can NOT be used concurrently from multiple threads! It's ok to pass a socket from one thread to another as long as there's is no access from more than one thread at a time

UDP is initialized.

IP_ADDRESS_TYPE_IPV4 or IP_ADDRESS_TYPE_IPV6. It can be IP_ADDRESS_TYPE_ANY and the server socket will accept any incoming type of connection. UDP_PORT localPort - UDP port on which to listen for connections IP_MULTI_ADDRESS* localAddress - Pointer to a local IP address to use. This needs to be the valid IP address of a local interface the server is to listen on or NULL if any incoming interface will do.