firefox visit openwrt juci got a running cycle. F12 network print these messages:

[whales-lee]

RPC init 01-juci.js:1:1794421
connecting to rpc server at (ws://192.168.80.134/websocket/) 01-juci.js:1:1763229
Firefox can’t establish a connection to the server at ws://192.168.80.134/websocket/. 01-juci.js:1:1763059
connection failed! 01-juci.js:1:1763437
onerror http://192.168.80.134/js/01-juci.js:1
could not connect to rpc interface 01-juci.js:1:1794765
UCI Init 01-juci.js:1:1794842
No uci rpc object present! 01-juci.js:1:1788418
connection closed! 01-juci.js:1:1763513
UCI failed to initialize! 01-juci.js:1:1794940
init http://192.168.80.134/js/01-juci.js:1
j http://192.168.80.134/js/01-juci.js:1
fireWith http://192.168.80.134/js/01-juci.js:1
f[0] http://192.168.80.134/js/01-juci.js:1
init http://192.168.80.134/js/01-juci.js:1
JUCI Init 01-juci.js:1:1795008
init: config 01-juci.js:1:1802569

root@OpenWrt:/etc/init.d# ubus list
dhcp
dnsmasq
file
hotplug.dhcp
hotplug.iface
hotplug.neigh
hotplug.net
hotplug.ntp
hotplug.tftp
iwinfo
log
luci-rpc
network
network.device
network.interface
network.interface.lan
network.interface.loopback
network.wireless
rc
rpc-sys
service
session
system
uci
root@OpenWrt:/etc/init.d# ps | grep ubus
1974 ubus 924 S /sbin/ubusd
2361 root 1316 S /sbin/rpcd -s /var/run/ubus/ubus.sock -t 30
4341 root 1104 R grep ubus
root@OpenWrt:/etc/init.d#
root@OpenWrt:/etc/init.d#
root@OpenWrt:/etc/init.d# ps | grep ubus
1974 ubus 924 S /sbin/ubusd
2361 root 1316 S /sbin/rpcd -s /var/run/ubus/ubus.sock -t 30
4343 root 1104 R grep ubus
root@OpenWrt:/etc/init.d# ps | grep rpcd
2361 root 1316 S /sbin/rpcd -s /var/run/ubus/ubus.sock -t 30
3481 root 11224 S /usr/bin/orangerpcd -p /usr/lib/orange/api/
4345 root 1104 R grep rpcd
root@OpenWrt:/etc/init.d# ps | grep lighttpd
3130 http 5200 S /usr/sbin/lighttpd -f /etc/lighttpd/lighttpd.conf
4347 root 1104 R grep lighttpd

[whales-lee]

build libwebsocket disable ipv6 will cause another problem:
Thread 2 "ws_server" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 4304.4305]
0x00007ffff7f78d69 in _orange_socket_callback (wsi=0x7ffff7b27ac0, reason=LWS_CALLBACK_FILTER_NETWORK_CONNECTION, _user=0x7ffff7b54908, in=0xa, len=0) at orange_ws_server.c:173
173 if(user && *user && (*user)->disconnect){
(gdb) backtrace
#0 0x00007ffff7f78d69 in _orange_socket_callback (wsi=0x7ffff7b27ac0, reason=LWS_CALLBACK_FILTER_NETWORK_CONNECTION, _user=0x7ffff7b54908, in=0xa, len=0) at orange_ws_server.c:173
#1 0x00007ffff7f40d30 in rops_handle_POLLIN_listen (pt=0x7ffff7b2f2a0, wsi=0x7ffff7b27ac0, pollfd=0x7ffff7b28040)
at /home/leo/code/openwrt-all/build_dir/target-x86_64_musl/libwebsockets-openssl/libwebsockets-4.2.1/lib/roles/listen/ops-listen.c:128
#2 0x00007ffff7f27d84 in lws_service_fd_tsi (tsi=0, pollfd=0x7ffff7b28040, context=0x7ffff7b2f020)
at /home/leo/code/openwrt-all/build_dir/target-x86_64_musl/libwebsockets-openssl/libwebsockets-4.2.1/lib/core-net/service.c:735
#3 lws_service_fd_tsi (context=context@entry=0x7ffff7b2f020, pollfd=0x7ffff7b28040, tsi=tsi@entry=0)
at /home/leo/code/openwrt-all/build_dir/target-x86_64_musl/libwebsockets-openssl/libwebsockets-4.2.1/lib/core-net/service.c:624
#4 0x00007ffff7f15bb0 in _lws_plat_service_forced_tsi (context=context@entry=0x7ffff7b2f020, tsi=tsi@entry=0)
at /home/leo/code/openwrt-all/build_dir/target-x86_64_musl/libwebsockets-openssl/libwebsockets-4.2.1/lib/plat/unix/unix-service.c:51
#5 0x00007ffff7f15e3a in _lws_plat_service_tsi (tsi=0, timeout_ms=, context=0x7ffff7b2f020)
at /home/leo/code/openwrt-all/build_dir/target-x86_64_musl/libwebsockets-openssl/libwebsockets-4.2.1/lib/plat/unix/unix-service.c:216
#6 _lws_plat_service_tsi (context=0x7ffff7b2f020, timeout_ms=, tsi=0)
at /home/leo/code/openwrt-all/build_dir/target-x86_64_musl/libwebsockets-openssl/libwebsockets-4.2.1/lib/plat/unix/unix-service.c:72
#7 0x00007ffff7f27e76 in lws_service (context=0x7ffff7b2f020, timeout_ms=timeout_ms@entry=60000)
at /home/leo/code/openwrt-all/build_dir/target-x86_64_musl/libwebsockets-openssl/libwebsockets-4.2.1/lib/core-net/service.c:805
#8 0x00007ffff7f788f8 in _websocket_server_thread (ptr=0x7ffff7f65890) at orange_ws_server.c:469
#9 0x00007ffff7fdc658 in ?? ()
#10 0x0000000000000000 in ?? ()

if(user && *user && (*user)->disconnect){
DEBUG("ws_client requested a disconnect!\n");
return -1;
}

code *user point to a invalid memory. cause core dump.

[whales-lee]

patched orange_ws_server.c will fix this.

--- a/src/orange_ws_server.c
+++ b/src/orange_ws_server.c
@@ -166,6 +166,10 @@ static void orange_srv_ws_client_delete(

static int _orange_socket_callback(struct lws *wsi, enum lws_callback_reasons reason, void *_user, void *in, size_t len){
// TODO: keeping user data in protocol is probably not the right place. Fix it.
+

• if(LWS_CALLBACK_FILTER_NETWORK_CONNECTION == reason)

•   return 0;
  

• const struct lws_protocols *proto = lws_get_protocol(wsi);
  struct orange_srv_ws_client **user = (struct orange_srv_ws_client **)_user;