I got the strange issue with sending message, which is reproducible by following steps:
Send a few messages (Successfully)
Send app to background
Resume app in few seconds
Send other message
Result: All messages from step 4 will be failed to send.
So any possible scenarios where reconnection might not be triggered when moving the app to background and back on foreground. I created another app but it work normally excepted the old one.
Hi @phongvhd93 would you tell me what SDK version you are currently using? and are you saying after step 4, all messages just fail to send no matter how long you waited?