Hi,
I am trying to get working replication between two message servers, both with new Cyrus 2.3.13.
>From logs it seems that sync_client "hangs up". I have the following functions flows for sync_client:
- main() calls replica_connect() to open connection to server
- replica_connect() calls backend_connect()
- backend_connect() calls ask_capability() since "banner is capability response"
from protocol definition for "csync"
static struct protocol_t csync_protocol =
{ "csync", "csync",
{ 1, "* OK" }, <==========================
{ NULL, NULL, "* OK", NULL,
{ { "* SASL ", CAPA_AUTH },
{ "* STARTTLS", CAPA_STARTTLS },
{ NULL, 0 } } },
{ "STARTTLS", "OK", "NO", 0 },
{ "AUTHENTICATE", INT_MAX, 0, "OK", "NO", "+ ", "*", NULL, 0 },
{ "NOOP", NULL, "OK" },
{ "EXIT", NULL, "OK" }
};
Below code from backend_connect() - ask_capability() is called with automatic==AUTO_BANNER
if (prot->banner.is_capa) {
/* try to get the capabilities from the banner */
mechlist = ask_capability(ret->out, ret->in, prot,
&ret->capability, AUTO_BANNER);
if (mechlist || ret->capability) {
/* found capabilities in banner -> don't ask */
ask = 0;
}
}
- sync_server returns the following banner "OK ms04 Cyrus sync server v2.3.13"
- ask_capability() tries to find capabilities (from protocol definition for "csync") in banner.
So it tries to find "* SASL " or "* STARTTLS" in "* OK ms04 Cyrus sync server v2.3.13"
And it fails.
- therefore function backend_connect() calls once again ask_capability() - this time with automatic==AUTO_NO
if (ask) {
/* get the capabilities */
mechlist = ask_capability(ret->out, ret->in, prot,
&ret->capability, AUTO_NO);
}
- however this time it seems that function ask_capability() "hangs up". It never ends.
It tries to read stream but probably sync_server doesn't send anything.
do {
if (prot_fgets(str, sizeof(str), pin) == NULL) break; <================================
/* look for capabilities in the string */
for (c = prot->capa_cmd.capa; c->str; c++) {
if ((tmp = strstr(str, c->str)) != NULL) {
*capa = *capa | c->flag;
if (c->flag == CAPA_AUTH) {
if (prot->capa_cmd.parse_mechlist)
ret = prot->capa_cmd.parse_mechlist(str, prot);
else
ret = xstrdup(tmp+strlen(c->str));
}
}
}
if (!resp) {
/* multiline response with no distinct end (IMAP banner) */
prot_NONBLOCK(pin);
}
/* look for the end of the capabilities */
} while (!resp || strncasecmp(str, resp, strlen(resp)));
Do you know what can be wrong?
Kind Regards,
Henryk
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