CurlMulti Objects

## CurlMulti Ojects

CurlMulti objects have the following methods:

close() -> None

> Corresponds to curl_multi_cleanup() in libcurl. This method is automatically called by pycurl when a CurlMulti object no longer has any references to it, but can also be called explicitly.

perform() -> tuple of status and the number of active Curl objects

> Corresponds to curl_multi_perform() in libcurl.

add_handle(Curl Object) -> None

> Corresponds to curl_multi_add_handle() in libcurl. This method adds an existing and valid Curl object to the CurlMulti object.

remove_handle(Curl Object) -> None

> Corresponds to curl_multi_remove_handle() in libcurl. This method removes an existing and valud Curl object from the CurlMulti object.

fdset() -> triple of lists with active file descriptors, readable, writeable, exceptions.

> Corresponds to curl_multi_fdset() in libcurl. This method extracts the file descriptor information from a CurlMulti object. The returned lists can be used with the select module to poll for events.
> Example usage:

>     import pycurl
>     c = pycurl.Curl()
>     c.setopt(pycurl.URL, 'http://curl.haxx.se')
>     m = pycurl.CurlMulti()
>     m.add_handle(c)
>     while 1:
>         ret, num_handles = m.perform()
>         if ret != pycurl.E_CALL_MULTI_PERFORM: break
>     while num_handles:
>         apply(select.select, m.fdset() + (1,))
>         while 1:
>             ret, num_handles = m.perform()
>             if ret != pycurl.E_CALL_MULTI_PERFORM: break

select(timeout) -> number of ready file descriptors or -1 on timeout

> This is a convenience function which simplifies the combined use of fdset() and the select module.
> Example usage:

>     import pycurl
>     c = pycurl.Curl()
>     c.setopt(pycurl.URL, 'http://curl.haxx.se')
>     m = pycurl.CurlMulti()
>     m.add_handle(c)
>     while 1:
>         ret, num_handles = m.perform()
>         if ret != pycurl.E_CALL_MULTI_PERFORM: break
>     while num_handles:
>         ret = m.select(1)
>         if ret == -1:  continue
>         while 1:
>             ret, num_handles = m.perform()
>             if ret != pycurl.E_CALL_MULTI_PERFORM: break

info_read(max) -> tuple with number of queued messages and a list of at most max messages

> Corresponds to the curl_multi_info_read function in libcurl. This method extracts at most max messages from the multi stack and returns them. The number of queued messages after this method has been called is also returned.