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A gevent wrapper for pyOpenSSL

Project description

This library wraps pyOpenSSL to make it compatible with gevent. OpenSSL connection operations that would normally block the current thread will only block the current greenlet instead.


  • PyOpenSSL >= 0.11
  • gevent (compatible with 1.0 pre-releases as well)


Instead of importing OpenSSL directly, do so in the following manner:

import gevent_openssl as OpenSSL


import gevent_openssl; gevent_openssl.monkey_patch()

Any calls that would have blocked the current thread will now only block the current green thread.


This compatibility is accomplished by yielding to the gevent scheduler when pyOpenSSL is waiting to be able to read or write data.




This project was originally created by Phus Lu ( and is now maintained by Menno Finlay-Smits (

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