RPC full reinitialise

#1

Hello,

I have a problem using the RPC. It was working properly before I started to use try/except in the wrong way. It seems it tries to connect to an old non-existing one. I have this problem when I run it in Sublime (Mac side), Grasshopper on Rhino Windows but no problem on Grasshopper on Rhino Mac oddly.

Is there a brute manner to force it to reinitialise?

Thanks,
Robin

Starting a new proxy server…
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Traceback (most recent call last):
…
File “/Users/Robin/Documents/COMPAS/core/compas/src/compas/rpc/proxy.py”, line 238, in start_server
raise RPCServerError(“The server is not available.”)
compas.rpc.errors.RPCServerError: The server is not available.

#2

Would using Proxy().stop_server() help? Alternatively on mac, going to the Activity Monitor and killing the active process could do. On my computer this shows up as python3.x.

#3

Still not working. The error occurs at the instantiation. And restarting my computer does not solve it and killing python via the Activity Monitor neither.

#4

hi robin,

i need a bit more info to help solve the issue.
also, what do you mean by “before i started to use try/except in the wrong way”?

and as a side note, on windows the process running the server will show up on the “Details” tab of the “Task Manager” under “pythonw.exe”…

a method for starting RPC that should always work is to use the Terminal/Anaconda Prompt.

conda activate robin
compas_rpc start

or, more explicitly

conda activate robin
python
>>> from compas.rpc import Proxy
>>> proxy = Proxy()
>>>

let me know how that goes…

#5

Hi Tom,

I tried both methods but the RPC doesn’t appear to start. I aborted the first method because nothing happened after a minute.

Last login: Wed Jun 24 13:01:56 on ttys000
The default interactive shell is now zsh.
To update your account to use zsh, please run chsh -s /bin/zsh.
For more details, please visit https://support.apple.com/kb/HT208050.
(base) MacBook-Pro-de-Robin:~ Robin$ conda activate research
(research) MacBook-Pro-de-Robin:~ Robin$ compas_rpc start
Starting default RPC service on port 1753…
Listening, press CTRL+C to abort…
^CTraceback (most recent call last):
File “/Users/Robin/anaconda3/envs/research/bin/compas_rpc”, line 11, in
load_entry_point(‘COMPAS’, ‘console_scripts’, ‘compas_rpc’)()
File “/Users/Robin/Documents/COMPAS/core/compas/src/compas/rpc/main.py”, line 63, in main
args.func(**vars(args))
File “/Users/Robin/Documents/COMPAS/core/compas/src/compas/rpc/main.py”, line 12, in start
start_service(port)
File “/Users/Robin/Documents/COMPAS/core/compas/src/compas/rpc/services/default.py”, line 38, in start_service
server.serve_forever()
File “/Users/Robin/anaconda3/envs/research/lib/python3.7/socketserver.py”, line 232, in serve_forever
ready = selector.select(poll_interval)
File “/Users/Robin/anaconda3/envs/research/lib/python3.7/selectors.py”, line 415, in select
fd_event_list = self._selector.poll(timeout)
KeyboardInterrupt
(research) MacBook-Pro-de-Robin:~ Robin$ python
Python 3.7.6 | packaged by conda-forge | (default, Mar 23 2020, 22:45:16)
[Clang 9.0.1 ] on darwin
Type “help”, “copyright”, “credits” or “license” for more information.

from compas.rpc import Proxy
proxy = Proxy()
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Traceback (most recent call last):
File “”, line 1, in
File “/Users/Robin/Documents/COMPAS/core/compas/src/compas/rpc/proxy.py”, line 102, in init
self._server = self.start_server()
File “/Users/Robin/Documents/COMPAS/core/compas/src/compas/rpc/proxy.py”, line 238, in start_server
raise RPCServerError(“The server is not available.”)
compas.rpc.errors.RPCServerError: The server is not available.

I tried to reinstall compas with

pip install -e .

but the same occurred.

#6

can you try with a clean environment? something like

conda create -n testrpc python=3.7 --yes
conda activate testrpc
cd path/to/compas
pip install -e .
python
>>> from compas.rpc import Proxy
>>> p = Proxy()
>>> p.stop_server()
>>> p.start_server()
#7

The same happened in the new environment at

p = Proxy()

with this error

Traceback (most recent call last):
File “”, line 1, in
File “/Users/Robin/Documents/COMPAS/core/compas/src/compas/rpc/proxy.py”, line 102, in init
self._server = self.start_server()
File “/Users/Robin/Documents/COMPAS/core/compas/src/compas/rpc/proxy.py”, line 238, in start_server
raise RPCServerError(“The server is not available.”)
compas.rpc.errors.RPCServerError: The server is not available.

I also tried in a new environment from a new folder for COMPAS, but it was the same.

#8

is there anything worth mentioning that happened with your computer before it stopped working? OS update, new installed software, Anaconda installation, …?