The Annoyance Filter.pdf - Fourmilab

§212 ANNOYANCE-FILTER POP3 PROXY SERVER CLASS DEFINITION 175
212. Send the status line received from the server back to the client. Why wait so long? Because if
we’ve modified the multi-line reply, we also may wish to modify the status line to reflect the length of
the modified reply.
〈 Relay the status line from the server to the client 212 〉 ≡
clientLength = send (clientSocket , serverBuffer , serverLength , 0);
if (clientLength ≠ serverLength ) {
perror ("POP3Proxy␣relaying␣status␣of␣request␣to␣client");
break;
}
if (popProxyTrace ) {
cerr ≪ "POP3:␣Relaying␣" ≪ serverLength ≪ "␣byte␣status␣line␣to␣client:␣" ≪
serverBuffer ;
if ((serverLength ≡ 0) ∨ (serverBuffer [serverLength − 1]) ≠ ’\n’) {
cerr ≪ endl ; /∗ “Can’t happen”—but just in case ∗/
}
}
This code is used in section 204.