On Sat, Feb 21, 2009 at 03:42:24PM +0100, Leon de Rooij wrote:
Hi Andrew,
Thanks for your help so far, I hope you can help me a bit further as I don't get any reply from the FS erlang node, or so it seems.. Here is what I've done:
- The erlang_event.conf.xml is unchanged:
<configuration name="erlang_event.conf" description="Erlang Socket Client"> <settings> <param name="listen-ip" value="127.0.0.1"/> <param name="listen-port" value="8031"/> <param name="nodename" value="freeswitch"/> <param name="cookie" value="ClueCon"/> <param name="shortname" value="true"/> <param name="encoding" value="string"/> </settings> </configuration>
You actually installed this to the right place? It's not installed by default... The defaults *should* be sane anyway, but I'm just checking.
- mod_erlang_event is not loaded in FS.
- First I start "epmd -d -d"
epmd: Sat Feb 21 13:12:56 2009: epmd running - daemon = 0 epmd: Sat Feb 21 13:12:56 2009: try to initiate listening port 4369 epmd: Sat Feb 21 13:12:56 2009: starting epmd: Sat Feb 21 13:12:56 2009: entering the main select() loop
- After that I "load mod_erlang_event" in FS:
2009-02-21 13:13:36 [DEBUG] mod_erlang_event.c:1324 mod_erlang_event_load() sections 16 2009-02-21 13:13:36 [CONSOLE] switch_loadable_module.c:858 switch_loadable_module_load_file() Successfully Loaded [mod_erlang_event] 2009-02-21 13:13:36 [NOTICE] switch_loadable_module.c:240 switch_loadable_module_process() Adding Application 'erlang' 2009-02-21 13:13:36 [NOTICE] switch_loadable_module.c:260 switch_loadable_module_process() Adding API Function 'erlang' 2009-02-21 13:13:36 [DEBUG] mod_erlang_event.c:1401 mod_erlang_event_runtime() Socket up listening on 127.0.0.1:8031 2009-02-21 13:13:36 [DEBUG] mod_erlang_event.c:1426 mod_erlang_event_runtime() Connected and published erlang cnode at freeswitch@erlyfs
- For which epmd gives the following output:
epmd: Sat Feb 21 13:13:36 2009: opening connection on file descriptor 4 epmd: Sat Feb 21 13:13:36 2009: got 25 bytes ***** 00000000 00 17 78 1f 5f 68 00 00 05 00 01 00 0a 66 72 65 |..x._h.......fre| ***** 00000010 65 73 77 69 74 63 68 00 00 | eswitch..| epmd: Sat Feb 21 13:13:36 2009: ** got ALIVE2_REQ epmd: Sat Feb 21 13:13:36 2009: registering 'freeswitch:1', port 8031 epmd: Sat Feb 21 13:13:36 2009: type 104 proto 0 highvsn 5 lowvsn 1 epmd: Sat Feb 21 13:13:36 2009: got 4 bytes ***** 00000000 79 00 00 01 |y...| epmd: Sat Feb 21 13:13:36 2009: ** sent ALIVE2_RESP for "freeswitch"
- Then I start an erl shell on that same machine with "erl -sname ldr - setcookie ClueCon". Output of epmd:
epmd: Sat Feb 21 13:16:24 2009: opening connection on file descriptor 5 epmd: Sat Feb 21 13:16:24 2009: got 18 bytes ***** 00000000 00 10 78 8e 2c 4d 00 00 05 00 05 00 03 6c 64 72 |..x.,M.......ldr| ***** 00000010 00 00 |..| epmd: Sat Feb 21 13:16:24 2009: ** got ALIVE2_REQ epmd: Sat Feb 21 13:16:24 2009: registering 'ldr:1', port 36396 epmd: Sat Feb 21 13:16:24 2009: type 77 proto 0 highvsn 5 lowvsn 5 epmd: Sat Feb 21 13:16:24 2009: got 4 bytes ***** 00000000 79 00 00 01 |y...| epmd: Sat Feb 21 13:16:24 2009: ** sent ALIVE2_RESP for "ldr"
As far as I understand the freeswitch@erlyfs node cannot be seen with nodes() ? So does that mean that I also cannot net_adm:ping() it ?
Yes, it's a 'hidden' node, as all non-erlang nodes are. However, it should be visible in the output of epmd -names.
Anyway, I tried sending some tuples as is shown on the wiki, but I get no reply:
(ldr@erlyfs)1> {foo, freeswitch@erlyfs} ! {api, status, ""}, receive X -> X after 1000 -> timeout end. timeout (ldr@erlyfs)2>
- Epmd gives some logs:
epmd: Sat Feb 21 13:19:09 2009: opening connection on file descriptor 6 epmd: Sat Feb 21 13:19:09 2009: got 13 bytes ***** 00000000 00 0b 7a 66 72 65 65 73 77 69 74 63 68 |..zfreeswitch| epmd: Sat Feb 21 13:19:09 2009: ** got PORT2_REQ epmd: Sat Feb 21 13:19:09 2009: got 23 bytes ***** 00000000 77 00 1f 5f 68 00 00 05 00 01 00 0a 66 72 65 65 | w.._h.......free| ***** 00000010 73 77 69 74 63 68 00 | switch.| epmd: Sat Feb 21 13:19:09 2009: ** sent PORT2_RESP (ok) for "freeswitch" epmd: Sat Feb 21 13:19:09 2009: closing connection on file descriptor 6
- And in tcpdump on lo, I see that epmd is contacted after which some traffic was sent to FS:
13:19:09.535293 IP 172.31.0.13.34678 > 172.31.0.13.4369: S 2875169966:2875169966(0) win 32792 <mss 16396,sackOK,timestamp 17946545 0,nop,wscale 6> ... 13:19:09.536834 IP 172.31.0.13.4369 > 172.31.0.13.34678: . ack 15 win 512 <nop,nop,timestamp 17946546 17946546> 13:19:09.536923 IP 172.31.0.13.47054 > 172.31.0.13.8031: S 2868322908:2868322908(0) win 32792 <mss 16396,sackOK,timestamp 17946546 0,nop,wscale 6> 13:19:09.536935 IP 172.31.0.13.8031 > 172.31.0.13.47054: R 0:0(0) ack 2868322909 win 0
Shouldn't FS then send a message back to the process in my erl shell ?
I tried logging all events in fs_cli, by entering "/event plain all", but I see no events at all coming from erlang, just some heartbeats..
Also, I recompiled the module with EI_DEBUG defined as suggested on the wiki. Still I don't see anything in the CLI when set to debug logging.
This is the part that's confusing me, you should be seeing *something*, especially with EI_DEBUG on, because in that case you see *everything* that is sent to or received by the erlang module. Let me to a 'make current' and doublecheck something didn't get broken along the way. Andrew