The Annoyance Filter.pdf - Fourmilab

178 POP3 PROXY SERVER IMPLEMENTATION ANNOYANCE-FILTER §217
217. POP3 proxy server implementation.
Using the POP3Proxy class defined above, the following code actually provides the proxying for
annoyance−filter, including running filtering retrieved messages and returning them to the client
annotated with their classification.
218. This is the entire proxy server! It is invoked by the main program after processing command
line options if popProxyServer has been set. It creates a POP3Proxy with the specified arguments
and puts it to work. There is no escape from here except through catastrophic circumstances.
〈 Operate POP3 proxy server, filtering replies 218 〉 ≡
if (dict .empty ( ) ∧ (¬fDict .isDictionaryLoaded ( ))) {
cerr ≪ "You␣cannot␣operate␣a␣−−pop3proxy␣server␣""unless␣you␣have␣fir\
st␣loaded␣a␣dictionary." ≪ endl ;
return 1;
}
if (verbose ) {
cerr ≪ "Starting␣POP3␣proxy␣server␣on␣port␣" ≪ popProxyPort ≪ "␣with␣server␣" ≪
popProxyServer ≪ ":" ≪ popProxyServerPort ≪ endl ;
}
POP3Proxy pp(popProxyPort , popProxyServer , popProxyServerPort , &popFilter );
pp.operateProxyServer ( );
This code is used in section 223.