removed easy handle argument from proto

CURLMcode curl_multi_socket(CURLM * multi_handle,

                            curl_socket_t sockfd,

                            CURL *easy,

                            curl_socket_callback callback,

                            void *userp);

Alternative versions of \fIcurl_multi_perform()\fP that allows the application

to pass in one of the file descriptors/sockets that have been detected to have

\&"action" on them and let libcurl perform. This allows libcurl to not have to

scan through all possible file descriptors to check for action. The

application is recommended to pass in the \fBeasy\fP argument (or set it to

CURL_EASY_NONE) to make libcurl figure out the internal structure even faster

and easier.  If the easy argument is set to something else than

CURL_EASY_NONE, the \fBsockfd\fP argument will be ignored by libcurl.

scan through all possible file descriptors to check for action. When the

application has detected on a socket handled by libcurl, call

\fIcurl_multi_perform()\fP with the \fBsockfd\fP argument set to the socket

with the action.

These functions inform the application about updates in the socket (file

descriptor) status by doing none, one or multiple calls to the

An application should call \fBcurl_multi_timeout(3)\fP to figure out how long

it should wait for socket actions \- at most \- before doing the timeout

action: call the \fBcurl_multi_socket(3)\fP function with the \fBsockfd\fP

argument set to CURL_SOCKET_TIMEOUT and the \fBeasy\fP argument set to

CURL_EASY_TIMEOUT.

argument set to CURL_SOCKET_TIMEOUT.

\fBcurl_multi_perform(3)\fP is the exact equivalent of calling

\fBcurl_multi_socket_all\fP(handle, NULL, NULL);