curl timeout vs socket timeout

Hi, We have two versions of client code, one using curl, and other one using raw sockets via fsockopen(), and we use the following code to set the i/o timeouts: 1) curl: . . curl_setopt( $handle, CURLOPT_TIMEOUT, 1 ); . . $resp = curl_exec($handle) 2) sockets: stream_set_timeout( $sock, 1); Here we use frwrite() and fread() to send the request and read the response respectively. In (1), how is the timeout applied - is it: a) timeout includes the entire curl_exec() call - the combined socket write() ( to send the request ) and the read() ( read the response ) calls. or b) timeout is independently applied to write() and read() end respectively. Some of our tests seem to indicate it is (a). In (2), I am assuming the stream timeout is applied at each i/o call independently for fwrite() and fread() - I am pretty much certain on this as this is how it would map to underlying C calls..... It will be good to get a confirmation on our doubts. Thanks, Ravi