Remote server do not response util connection is closed.

[RyanCode]

I use apache guacmole which base on freerdp to connect to the remote desktop.In my test, if various events are triggered at high frequency, sometimes it will get stuck , and the remote machine will not send data packets(tcpdump will not recieve any packets).err log:BIO_read returned a system error 110: Connection timed out.I searched the history issue of freerdp and found no answer to this problem

[akallabeth]

@RyanCode ok, to sum up your description 'something went wrong'
sorry, please add a little more detail on what your setup is (configuration!), what you tested and what is going wrong, this can not be answered otherwise.

[akallabeth]

@RyanCode before wasting time investigating a very old version you should probably just update the current client and check if the issue was already addressed.
(there have been 16 versions in between and I don´t remember every bug that was fixed ;))

[RyanCode]

I have upgraded the version to the latest,This problem will still arise

[akallabeth]

@RyanCode good. then

1. which connection settings do you use?
2. which openssl version is in use?
3. what is the target RDP server? (windows version, xrdp, ogon, ...)
4. if possible, can you reproduce this with a direct connection (xfreerdp) too?

[RyanCode]

It‘s out network problem,I test with wget,also send some TCP RST,But why is freerdp blocked and why not disconnect directly？

[akallabeth]

ok, so it is the network.
it blocks until the SSL/TLS connection times out, that is the reason. (just try a wget with a https url)