Questions tagged [grpc]

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GRPC streaming not working when forwarded via Apache reverse proxy

I have a gRPC service and I want to deploy it behind an Apache reverse proxy. The apache configuration is similar to the following: LoadModule http2_module modules/mod_http2.so LoadModule ...
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0 votes
1 answer
86 views

grpc_pass nginx configuration

When I do the same with resolver and set grpc_pass it fails: `server { listen 443 http2: server _name opc.org.com; ssl....; location / { resolver 127.0....
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0 answers
587 views

GRPC call returns 'PROTOCOL_ERROR (0X1)' for a .NET application on EKS

My .NET application is deployed to an EKS cluster, which has an ingress defined with the following relevant annotations kubernetes.io/ingress.class: alb alb.ingress.kubernetes.io/ssl-policy: ...
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2 votes
1 answer
555 views

Why is Nginx truncating the JSON streaming response?

Our stack is Client(Browser) <-> Nginx Reverse Proxy <-> Webserver(Flask+Gunicorn) <-> Golang gRPC server The problem is when the client makes a call to the /realtimedata endpoint, ...
1 vote
1 answer
314 views

EC2 GRPC install hangs after 12 hours still no install

I'm pretty sure it's because I am using t2.nano and not something a little more beefy. But I have used laravel forge to provision an ec2 server, I can't deploy my application however because I need to ...
-1 votes
1 answer
1k views

Too many RPC connections make web socket closed

Several servers are connected via RPC. There are times when apps in OS have too many RPC calls, which causes the network to become closed. What is the best way to debug or configure my OS? "msg&...
2 votes
0 answers
1k views

Unable to receive gRPC error during a response streaming call using HAProxy in HTTP mode

I'm working on a gRPC application that will be served behind HAProxy using the http mode. If the server application immediately (ie. before sending any responses) aborts the response streaming call ...
0 votes
0 answers
3k views

gRPC failed with StatusCode.UNAVAILABLE: failed to connect to all addresses

I am trying to set up Tinode messenger on Debian 10 Buster server. For some reason when I run a Pyhon command to access messenger's grpc service on localhost, port 16060: python tn-cli.py --login-...
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2 votes
1 answer
4k views

Does Azure Application Gateway support gRPC connections?

I've set up an Azure Application Gateway with Azure Kubernetes Service using the Azure Application Gateway Ingress Controller (AGIC) and confirmed that it's working correctly using the sample ...
1 vote
1 answer
2k views

Connection incorrectly preserved when using gRPC on ISTIO

We've seen some odd behaviour on our kubernetes cluster. We have two test applications that speak gRPC. One sends a subscription message and the other sends back a stream of responses. The envisaged ...
2 votes
0 answers
354 views

Having trouble with gRPC calls behind an (AWS classic) load balancer

I have a server written in Python 3.6, using frameworks flask (1.0.2), and SQLAlchemy (2.4.0). I have some rest calls going out to third-party services such as vision APIs. I have a few API calls ...
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3 votes
1 answer
6k views

why do I need a certificate to establish a secure gRPC connection as a client?

When using gRPC over plain TCP the client establishes a channel with the server like this (in ruby): stub = Helloworld::Greeter::Stub.new(service_url, :this_channel_is_insecure) but then, when I ...
0 votes
1 answer
160 views

Expired DHCP lease on restored VM snapshot interfering with active gRPC connection?

I am using gRPC to communicate between Java (running on the host) and Python (running on my Guest VMs). My software sets up some VMs at startup with libvirt. I specify my network with a DHCP range ...
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1 vote
2 answers
1k views

Http2 load balancer by using L4

As far as I known, L4 load balancer maintains 2 TCP connections: One is from front side to Load balancer LB terminate above connection, create new TCP connection , change IP/Port of TCP packet to ...
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2 votes
0 answers
466 views

Nginx self-signed certificates for gRPC server

I want to set up a gRPC service behind nginx that also serves letsencrypt enabled https services. I want to enable and disable access from client services (other websites) on a regular basis. So if ...
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1 vote
0 answers
1k views

How to configure dynamic routing of gRPC requests with envoy, nomad and consul

We use nomad to deploy our applications - which provide gRPC endpoints - as tasks. The tasks are then registered to Consul, using nomad's service stanza. The routing for our applications is achieved ...
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