socket.if_indextoname(if_index) Return a network interface name corresponding to an interface index number.

ssl.OP_NO_SSLv2 Prevents an SSLv2 connection. This option is only applicable in conjunction with PROTOCOL_SSLv23

socket.gethostbyname_ex(hostname) Translate a host name to IPv4 address format, extended interface. Return a triple (hostname

exception ssl.CertificateError Raised to signal an error with a certificate (such as mismatching hostname). Certificate errors

async_chat.discard_buffers() In emergencies this method will discard any data held in the input and/or output buffers and the

signal.sigwaitinfo(sigset) Suspend execution of the calling thread until the delivery of one of the signals specified in the

signal.pause() Cause the process to sleep until a signal is received; the appropriate handler will then be called. Returns nothing

SSLContext.session_stats() Get statistics about the SSL sessions created or managed by this context. A dictionary is returned

ac_in_buffer_size The asynchronous input buffer size (default 4096).

socket.ntohs(x) Convert 16-bit positive integers from network to host byte order. On machines where the host byte order is the