[lldb-dev] Failure connecting to lldb-server running in local virtual machine.

[Howard Hellyer via lldb-dev]

Greg Clayton <gclayton at apple.com> wrote on 16/02/2017 17:17:41:

> Sounds like a race condition we need to solve.

It seemed likely but I thought I'd confirm that before I investigated too 
deeply just in case there was anything obvious I'd missed.
 
> This sounds like a very common VM issue. If you can elaborate on 
> what happens with ports on your VM we might be able to deduce some 
> of the problems. Filing a bug will be nice, but since you are 
> running into this issue, seems like you will need to debug it and 
> make it work. We are happy to assist.

Initially I was mapping ports with an offset but as part of investigating 
I simplified things and now my setup just routes ports 1234 and 2345 on my 
machine to 1234 and 2345 on the VM. I might retry with an offset just to 
double check if that changes anything but I don't think it did.

It does seem to be fairly common, it happens with my VM and to another 
colleague using docker. It works with a remote system for me but fails 
with with a remote system for him.

I've had some other bits to look at today but I'll try to take a deeper 
look next week. I'll try to update this thread with what I find as any 
useful suggestions other people have are likely to save a bit of time.

Thanks,

Howard Hellyer
IBM Runtime Technologies, IBM Systems
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IBM United Kingdom Limited - Registered in England and Wales with number 
741598. 
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
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