Why does attachment upload API timeout?

Paul van Cingel August 18, 2020

Other Trello API calls work fine.

Attachment uploads to cards worked fine until a few days ago. Now times out after 20 seconds.

java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)

I have amended java httpclient timeouts and see "connection reset by peer" every 20 seconds:

2020/08/18 09:18:39 AM [INFO] - url : https://api.trello.com/1/cards/5d5ddxxxxxxxxx4546/attachments?key=0732872xxxxxxxxxd7e24204687&token=074c7ce3b07xxxxxxxxx88f9440f&name=ABCD_Glass_Current_Stock.pdf
2020/08/18 09:18:58 AM [INFO] - I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
2020/08/18 09:18:58 AM [INFO] - Retrying request
2020/08/18 09:19:18 AM [INFO] - I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
2020/08/18 09:19:18 AM [INFO] - Retrying request
2020/08/18 09:19:38 AM [INFO] - I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
2020/08/18 09:19:38 AM [INFO] - Retrying request
2020/08/18 09:19:58 AM [ERROR] - error.unknown : Connection reset by peer: socket write error
java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)

1 answer

0 votes
Iain Dooley
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August 18, 2020

@Paul van Cingel in order to eliminate the possibility that there is something dodgy going on in your code, have you tried doing it with curl and seeing if you get the same problem?

curl -v -F "file=@test.pdf" "https://api.trello.com/1/cards/CARDID/attachments?key=KEY&token=TOKEN

that should give you a bunch of output and a bit more insight into what's going on, if that doesn't work then it'll make a stronger case when you contact Trello support, if that does work then there's probably something else wrong on your side of the fence.

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