Random connection closed

Alpaca Integration Applications
1

Hi,

I am trying to test my algo on paper trading. all is going well then for some reason the connection was closed. The computer was idle, I didn’t input anything. Can someone please explain this?

Thanks

E

2

Hi,
server communication may sometimes break.
since v.049.0 (latest is 0.49.1) we do a ws reconnection when that happens.
make sure you are using the latest version.

3

Hi Shlomi,
Thanks for your reply. I am using the latest version. Is there a command you can call in the “on_close” function to automatically reconnect?

thanks in advance

4

it is automatically defined to reconnect.
do you have a stacktrace with the error you get?

5

there is no error, it just closes connection on its own. I haven’t written anything to reopen the connection because I can’t find anything online. I’m sure there is a simple solution but it has escaped me so far lol

6

add a logger to your script.
do it like this:

import logging
logging.basicConfig(format='%(asctime)s %(message)s', level=logging.INFO)

also, define the websocket connection in debug mode:

StreamConn(ALPACA_API_KEY,
           ALPACA_SECRET_KEY,
           base_url="https://paper-api.alpaca.markets",
           debug=True)  # <============== ADD THIS

this should give you more information

7

that doesn’t seem to work, I have it written like this:

api = tradeapi.REST(API_KEY, SECRET_KEY, BASE_URL, api_version=‘v2’)

unexpected key word arg.

8

are you sure you have the latest version of alpaca-trade-api?

9

No I’m confused sorry. I thought v2 would be newer than 0.49.1. I have changed my version to that and it still closes connection on its own.

10

wait for the market to open

11

Hi Shlomi, Sorry to be a pest but I am struggling to get to grips with this. I have changed the version to 0.49.1, though now I am unable to get account() and place orders. What am I missing?

12

there was nothing done in those areas (account / orders ) in the last 3 versions of the sdk
shouldn’t be related to that

13

It was the only thing I changed. once changed back to v2 all that stuff works fine again. Is there a change in notation I should be aware of?

14

v2 is the default api version. you don’t need to specify it.
make sure you read the readme file to learn how to use the sdk: https://github.com/alpacahq/alpaca-backtrader-api