Trojan UoT: Fix memory/goroutine leak

[patterniha]

in detail: #5050 (comment), #5050 (comment)

in short: #5050 (comment)

[Fangliding]

直接实现一个connIdle不就是了

[patterniha]

ok, wait.

[patterniha]

in fact, we didn't implement connIdle for socks and shadowsocks too.
but because inbound is also UDP for them and inbound-udp-worker has 120-seconds idle-timeout, We didn't feel any problem, i mentioned this problem before: #4795 (comment).

please wait..., i want to fix it all.

[Fangliding]

别再动了 那些东西就是没有超时时间 因为它们没有连接的概念 只是uot有一个连接所以要管而已

[patterniha]

ok.

[patterniha]

done.
also, UplinkOnly/DownlinkOnly is meaningless for uot.

[kastov]

@patterniha @Fangliding

gor_test_new.prof.zip

Seems like finally fixed. RAM usage pretty stable

[patterniha]

Seems like finally fixed. RAM usage pretty stable

I fixed another bug that I didn't cause. I spent almost a week on it, but no respect, no appreciation, no ...
It was a really disappointing week.

[patterniha]

READY.

[kastov]

@patterniha thanks!