> If the server _application_ crashes or exits, then the OS will > close the socket and recv() will return "". If somebody powers > down the server without warning, or if the server OS crashes, > or if the Ethernet cable between the Internet and the server is > cut, then the socket will not be closed, and recv() will wait > forever[1].
Ok, yes all of the above is what i mean. Actually I am not too concerned about a server os crash, or the cable being cut. But I have had them close the connection on me, after which i just reconnect (whenever i discover that its happened) >[1] Unless you've enabled the TCP Keepalive feature, in which > case the socket will timeout in a couple hours and recv() > will return "". if this is something that must be enabled, or is not enabled by default, then it is not enabled. so i should be pretty good. thanks for all of your help, gents ! -sk Grant Edwards wrote: > On 2006-07-17, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > > oh, sorry, what i mean by dropped is that the server i am > > connecting to can close the connection. > > Then recv() will return "" and send() will raise an exception. > > > If that happens, i need to know about it. i also need to know > > about it if the server i am connecting to just dies. > > Again, you have to define what you mean by "server just dies". > > If the server _application_ crashes or exits, then the OS will > close the socket and recv() will return "". If somebody powers > down the server without warning, or if the server OS crashes, > or if the Ethernet cable between the Internet and the server is > cut, then the socket will not be closed, and recv() will wait > forever[1]. > > > if recv() returns "" is that the same as NONE ? > > No. It's the empty string (also spelt ''). > > > I mean can the value be tested true or false? > > Yes. The empty string is false, all non-empty strings are > true. > > [1] Unless you've enabled the TCP Keepalive feature, in which > case the socket will timeout in a couple hours and recv() > will return "". > > -- > Grant Edwards grante Yow! Now I am depressed... > at > visi.com -- http://mail.python.org/mailman/listinfo/python-list
