curl_multi_select

Blocks until there is activity on any of the curl_multi connections.

A cURL multi handle returned by curl_multi_init().

Time, in seconds, to wait for a response.

On success, returns the number of descriptors contained in the descriptor sets. This may be 0 if there was no activity on any of the descriptors. On failure, this function will return -1 on a select failure (from the underlying select system call).

curl_multi_init() -