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| -rw-r--r-- | Doc/faq/library.rst | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Doc/faq/library.rst b/Doc/faq/library.rst index 06a1ae6..ee099cf 100644 --- a/Doc/faq/library.rst +++ b/Doc/faq/library.rst @@ -757,7 +757,8 @@ some sample code:: How do I avoid blocking in the connect() method of a socket? ------------------------------------------------------------ -The select module is commonly used to help with asynchronous I/O on sockets. +The :mod:`select` module is commonly used to help with asynchronous I/O on +sockets. To prevent the TCP connect from blocking, you can set the socket to non-blocking mode. Then when you do the ``connect()``, you will either connect immediately @@ -771,6 +772,12 @@ just return the errno value. To poll, you can call ``connect_ex()`` again later -- ``0`` or ``errno.EISCONN`` indicate that you're connected -- or you can pass this socket to select to check if it's writable. +.. note:: + The :mod:`asyncore` module presents a framework-like approach to the problem + of writing non-blocking networking code. + The third-party `Twisted <http://twistedmatrix.com/>`_ library is + a popular and feature-rich alternative. + Databases ========= |