The Annoyance Filter.pdf - Fourmilab

§209 ANNOYANCE-FILTER POP3 PROXY SERVER CLASS DEFINITION 173
209. Now we’re ready to read the status line from the server. This will begin with “+OK” if the
request was successful and “−ERR” if now.
〈 Read status line from server 209 〉 ≡
serverLength = 0;
int rl = −1;
while (true ) {
rl = recv (serverSocket , serverBuffer + serverLength , 1, 0);
if (rl < 0) {
perror ("POP3Proxy␣reading␣request␣status␣from␣server");
break;
}
serverLength ++;
if (serverBuffer [serverLength − 1] ≡ ’\n’) {
break;
}
if (serverLength ≥ POP_MAX_MESSAGE) {
cerr ≪ "POP3Proxy␣reply␣from␣server␣too␣long." ≪ endl ;
rl = −1;
break;
}
}
if (rl < 0) {
break;
}
if (popProxyTrace ) {
cerr ≪ "POP3:␣Server␣reply␣is␣" ≪ serverLength ≪ "␣bytes" ≪ endl ;
}
This code is cited in section 256.
This code is used in section 204.