Apigee Proxy Upstream Timeout Error (504 gateway error)

[CanOezer]

Hello Guys, I have a problem with Apigee Proxies. The Problem is when I create a Proxy for my Google Cloud Function API, which gets me a response in about 30 seconds to 1 minute. So when I call the API with a Apigee Proxy, it will always get me an error after 30 seconds, although I've changed the configurations of the Proxy. The error says: 

"upstream request timeout" and the status in postman says: 504 Gateway Timeout. 

Ich Apigee has some kind of default timeout settings. I have worked with following documentations but couldn't solve the problem:

https://cloud.google.com/apigee/docs/api-platform/errorcatalog/mp-runtime-errorcatalog?

hl=dehttps://cloud.google.com/apigee/docs/api-platform/reference/endpoint-properties-reference?hl=de... 

My configurations of the xml of the proxy are like this:

Proxy endpoint:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

<ProxyEndpoint name="default">

<PreFlow name="PreFlow">

<Request>

<Step>

<Name>AM-</Name>

</Step>

</Request>

<Response/>

</PreFlow>

<Flows/>

<PostFlow name="PostFlow">

<Request/>

<Response/>

</PostFlow>

<HTTPProxyConnection>

<BasePath>/dev_deploycontracts</BasePath>

<Properties>

<Property name="io.timeout.millis">200000</Property>

</Properties>

</HTTPProxyConnection>

<RouteRule name="default">

<TargetEndpoint>default</TargetEndpoint>

</RouteRule>

</ProxyEndpoint>

_______________________________________________

Target endpoint:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

<TargetEndpoint name="default">

<PreFlow name="PreFlow">

<Request>

<Step>

<Name>add-cors</Name>

</Step>

<Step>

<Name>AM-</Name>

</Step>

</Request>

<Response/>

</PreFlow>

<Flows/>

<PostFlow name="PostFlow">

<Request/>

<Response/>

</PostFlow>

<HTTPTargetConnection>

<URL>example.cloud-function.net</URL>

<Properties>

<Property name="io.timeout.millis">200000</Property>

</Properties>

</HTTPTargetConnection>

</TargetEndpoint>

I have also tried it with:

• keepalive.timeout.millis
• connect.timeout.millis
• request.streaming.enabled
• api.timeout

I hope you guys can help me to solve this problem and thanks in advance! 🙂

Regards

Can Özer

@dchiesa1 @dknezic 

[dknezic]

The Load Balancer will also have a timeout that usually defaults to 30 seconds. Also, if you're using PSC this timeout cannot be modified (it's locked to 30s)

[billandr]

Were you able to solve this problem.  The debug doesn't even show the 504 and if I leave debug running; it captures the response from the targetserver; but postman still returns a 504 after 30 seonds. (eventhough that 504 never shows up in the debug and after 45 seconds; the debug shows the response from the target with a 200) Unfortunately Postman never gets this response since it already got the 504.

Any ideas?

[dknezic]

The GCP Load Balancer isn't accounted for in the Apigee debug, it's outside of that view

[billandr]

gtk - I was able to resolve my problem by running:

gcloud compute backend-services update apigee-backend-service-xxxxxx --global --timeout=180 --project=xxxxxx