NET_WaitUntilConnected - Man Page

#include <SDL3_net/SDL_net.h>

NET_Status NET_WaitUntilConnected(NET_StreamSocket *sock, Sint32 timeout);

The NET_StreamSocket objects returned by NET_CreateClient take time to do their work, so it does so _asynchronously_ instead of making your program wait an indefinite amount of time.

However, if you want your program to sleep until the connection is complete, you can call this function.

This function takes a timeout value, represented in milliseconds, of how long to wait for resolution to complete. Specifying a timeout of -1 instructs the library to wait indefinitely, and a timeout of 0 just checks the current status and returns immediately (and is functionally equivalent to calling NET_GetConnectionStatus).

Connections can fail after some time (server took awhile to respond at all, and then refused the connection outright), so be sure to check the result of this function instead of assuming it worked!

Once a connection is successfully made, the socket may read data from, or write data to, the connected server.

If you don't want your program to block, you can call NET_GetConnectionStatus() from time to time until you get a non-zero result.

sock

The NET_StreamSocket object to wait on.

timeout

Number of milliseconds to wait for resolution to complete. -1 to wait indefinitely, 0 to check once without waiting.

Returns NET_SUCCESS if successfully connected, NET_FAILURE if connection failed, NET_WAITING if still connecting (this function timed out without resolution); if NET_FAILURE, call SDL_GetError() for details.

You should not operate on the same socket from multiple threads at the same time without supplying a serialization mechanism. However, different threads may access different socket at the same time without problems.

This function is available since SDL_net 3.0.0.

NET_GetConnectionStatus(3)

NET_CreateClient(3), NET_GetConnectionStatus(3).