I have two processes,for A and B
process A register two ubus object(for other processes invoke) ,and it also subscribes another process B.
process B often started later than A,so I use ubus_timer to subscribes process B 5s once until subscribe successful in process A.
the problem is that when A subscribes B successful by ubus_timer,A can not receive any ubus message?
use command "ubus call A xxx" will be block.
it looks like A is blocked,but A can send ubus notify 5s once
Here are some logs
A add_object
<- 273ae208 #00000000 add_object: {"objpath":"ql-netd","signature":{"datacall":{"id":5,"len":5,"data":3}}}
-> e78a3392 #00000000 invoke: {"objid":-1393543936,"method":"ubus.object.add","data":{"id":1169706053,"path":"ql-netd"}}
-> 150f4ab9 #00000000 invoke: {"objid":26989734,"method":"ubus.object.add","data":{"id":1169706053,"path":"ql-netd"}}
-> 273ae208 #00000000 data: {"objid":1169706053,"objtype":1749708283}
-> 273ae208 #00000000 status: {"status":0}
<- e78a3392 #00000000 status: {"status":0,"objid":-1393543936}
<- 273ae208 #00000000 add_object: {"objpath":"ql-netd.unsol","signature":{}}
-> e78a3392 #00000000 invoke: {"objid":-1393543936,"method":"ubus.object.add","data":{"id":-1992422665,"path":"ql-netd.unsol"}}
-> 150f4ab9 #00000000 invoke: {"objid":26989734,"method":"ubus.object.add","data":{"id":-1992422665,"path":"ql-netd.unsol"}}
-> 273ae208 #00000000 data: {"objid":-1992422665,"objtype":-898668707}
-> 273ae208 #00000000 status: {"status":0}
<- e78a3392 #00000000 status: {"status":0,"objid":-1393543936}
<- 273ae208 #893e0af7 notify: {"objid":-1992422665,"method":"say Hi!","data":{},"no_reply":true}
A subscribes B,B not started,so subscribes failed
<- 273ae208 #00000000 add_object: {}
-> 273ae208 #00000000 data: {"objid":1904170873}
-> 273ae208 #00000000 status: {"status":0}
<- 150f4ab9 #00000000 status: {"status":0,"objid":26989734}
<- 150f4ab9 #00000000 status: {"status":0,"objid":26989734}
<- 273ae208 #00000000 lookup: {"objpath":"ql-netagent.unsol"}
-> 273ae208 #00000000 status: {"status":4}
B start
<- 3df41fa4 #00000000 add_object: {"objpath":"modem_pdn","signature":{"start":{"apn":3,"pincode":3,"user":3,"password":3,"auth_type":5,"ip_type":5},"stop":{"apn":3},"status":{"apn":3},"add_route":{"ifid":5,"ip_type":5,"v4_addr":3},"del_route":{"ifid":5,"ip_type":5,"v4_addr":3}}}
-> e78a3392 #00000000 invoke: {"objid":-1393543936,"method":"ubus.object.add","data":{"id":-416912521,"path":"modem_pdn"}}
-> 150f4ab9 #00000000 invoke: {"objid":26989734,"method":"ubus.object.add","data":{"id":-416912521,"path":"modem_pdn"}}
-> 3df41fa4 #00000000 data: {"objid":-416912521,"objtype":1388643946}
-> 3df41fa4 #00000000 status: {"status":0}
<- e78a3392 #00000000 status: {"status":0,"objid":-1393543936}
<- 150f4ab9 #00000000 status: {"status":0,"objid":26989734}
<- 3df41fa4 #00000000 add_object: {"objpath":"modem_reset","signature":{}}
-> e78a3392 #00000000 invoke: {"objid":-1393543936,"method":"ubus.object.add","data":{"id":-905437688,"path":"modem_reset"}}
-> 150f4ab9 #00000000 invoke: {"objid":26989734,"method":"ubus.object.add","data":{"id":-905437688,"path":"modem_reset"}}
-> 3df41fa4 #00000000 data: {"objid":-905437688,"objtype":-417569822}
-> 3df41fa4 #00000000 status: {"status":0}
<- e78a3392 #00000000 lookup: {"objpath":"modem_reset"}
-> e78a3392 #00000000 data: {"objpath":"modem_reset","objid":-905437688,"objtype":-417569822,"signature":{}}
-> e78a3392 #00000000 status: {"status":0}
<- e78a3392 #00000000 subscribe: {"objid":-1210667152}
-> 3df41fa4 #00000000 notify: {"objid":-905437688,"active":true}
-> e78a3392 #00000000 status: {"status":0}
<- 150f4ab9 #00000000 status: {"status":0,"objid":26989734}
<- e78a3392 #00000000 status: {"status":0,"objid":-1393543936}
<- 3df41fa4 #00000000 add_object: {"objpath":"ql-netagent.unsol","signature":{}}
-> e78a3392 #00000000 invoke: {"objid":-1393543936,"method":"ubus.object.add","data":{"id":1024522508,"path":"ql-netagent.unsol"}}
-> 150f4ab9 #00000000 invoke: {"objid":26989734,"method":"ubus.object.add","data":{"id":1024522508,"path":"ql-netagent.unsol"}}
-> 3df41fa4 #00000000 data: {"objid":1024522508,"objtype":1406114180}
-> 3df41fa4 #00000000 status: {"status":0}
<- e78a3392 #00000000 status: {"status":0,"objid":-1393543936}
<- 150f4ab9 #00000000 status: {"status":0,"objid":26989734}
<- f6754139 #5c7fac46 notify: {"objid":1551871046,"method":"system status","data":{"msg_id":16392,"data_len":8,"data":"刓u0019T$"},"no_reply":true}
<- f6754139 #5c7fac46 notify: {"objid":1551871046,"method":"system status","data":{"msg_id":16391,"data_len":8,"data":"刓u0019T$"},"no_reply":true}
A subscribes B successful by ubus_timer
<- 273ae208 #00000000 add_object: {}
-> 273ae208 #00000000 data: {"objid":426396253}
-> 273ae208 #00000000 status: {"status":0}
<- 273ae208 #00000000 lookup: {"objpath":"ql-netagent.unsol"}
-> 273ae208 #00000000 data: {"objpath":"ql-netagent.unsol","objid":1024522508,"objtype":1406114180,"signature":{}}
-> 273ae208 #00000000 status: {"status":0}
<- 273ae208 #00000000 subscribe: {"objid":426396253}
-> 3df41fa4 #00000000 notify: {"objid":1024522508,"active":true}
-> 273ae208 #00000000 status: {"status":0}
use command "ubus call A xxx" failed
-> 6884526b #6884526b hello: {}
<- 6884526b #00000000 lookup: {"objpath":"ql-netd"}
-> 6884526b #00000000 data: {"objpath":"ql-netd","objid":1169706053,"objtype":1749708283,"signature":{"datacall":{"id":5,"len":5,"data":3}}}
-> 6884526b #00000000 status: {"status":0}
<- 6884526b #45b84c45 invoke: {"objid":1169706053,"method":"datacall","data":{"id":"0","len":"1","data":"cnnet"}}
-> 273ae208 #6884526b invoke: {"objid":1169706053,"method":"datacall","data":{"id":"0","len":"1","data":"cnnet"},"user":"root","group":"root"}
<- 273ae208 #00000000 status: {"status":4,"objid":0}
A send notify 5s once
<- 273ae208 #893e0af7 notify: {"objid":-1992422665,"method":"alive","data":{},"no_reply":true}