Hi, We are running Dovecot proxies in front of our Dovecot IMAP servers, and were having problems with Windows Mobile clients not being able to connect. The clients would send a LOGIN command, and immediately after the succes reply a LOGOUT command.
It turns out the Windows Mobile IMAP client gets confused by the IMAP proxy first sending the command tag in the reply and then, in a seperate packet, the rest of the line. Although not being able to handle this looks like a very bad design to me (how can one ever expect to read a full line in a single read() call?) I fixed it in our Dovecot proxies because we do have clients that want to use it. Attached is my fix for the problem. Onno
diff -ru dovecot-1.0.13.orig/src/imap-login/imap-proxy.c dovecot-1.0.13/src/imap-login/imap-proxy.c
--- dovecot-1.0.13.orig/src/imap-login/imap-proxy.c 2007-12-11 19:52:08.000000000 +0100
+++ dovecot-1.0.13/src/imap-login/imap-proxy.c 2008-04-22 11:11:13.000000000 +0200
@@ -45,9 +45,11 @@
return 0;
} else if (strncmp(line, "P OK ", 5) == 0) {
/* Login successful. Send this line to client. */
- (void)o_stream_send_str(client->output, client->cmd_tag);
- (void)o_stream_send_str(client->output, line + 1);
- (void)o_stream_send(client->output, "\r\n", 2);
+ str = t_str_new(128);
+ str_append(str, client->cmd_tag);
+ str_append(str, line + 1);
+ str_append(str, "\r\n");
+ (void)o_stream_send_str(client->output, str_data(str));
msg = t_strdup_printf("proxy(%s): started proxying to %s:%u",
client->common.virtual_user,
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