I figured it out. I rewrote the webserver backend and frontend to use
websockets instead of what I was doing!
On Tuesday, November 23, 2021 at 4:12:51 PM UTC-5 Paul Cote wrote:
>
> I've just tried this with Apache2 as well and I'm getting the same random
> truncations. Maybe this is a gRPC issue?
> On Monday, November 22, 2021 at 1:13:10 PM UTC-5 Paul Cote wrote:
>
>> Hello,
>>
>> I've been struggling to resolve this particular issue. I have a Golang
>> gRPC server which streams data to a Flask/Gunicorn webserver and then
>> passes it on to the client. I have Nginx running as a reverse proxy in
>> front of my webserver
>>
>> Client(Browser) <-> Nginx Reverse Proxy <-> Webserver(Flask/Gunicorn)
>> <-> go-grpc server
>>
>> Essentially, the user on their browser will click a button which is just
>> an AJAX call (/stream) to the backend webserver. Then the webserver, which
>> is the gRPC client, will make the actual gRPC call and yield all responses
>> back to the client. Some of them get truncated. For example if we expect:
>>
>> {
>> "source": "serviceA",
>> "timestamp": 123490435,
>> "data": {
>> "1": 3446.706,
>> "2": -45.343464,
>> ...
>> "200": 5.3545
>> }
>> }
>>
>> We may only get:
>> {
>> "source": "serviceA",
>> "ti
>>
>> And then:
>> mestamp": 123490435,
>> "data": {
>> "1": 3446.706,
>> "2": -45.343464,
>> ...
>> "200": 5.3545
>> }
>> }
>> In the next frame. Where the truncation happens is random and when it
>> happens is also random. If my setup doesn't make any sense, please let me
>> know on better ways to integrate a gRPC client.
>>
>> I've isolated the problem to nginx. If I run this without nginx, I get no
>> truncations. I've tried `proxy_buffering off;` and a myriad other nginx
>> paramters but nothing seems to work.
>>
>> Thank you,
>>
>> Paul C.
>>
>
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