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Questions tagged [grpc]

16 questions
3
votes
1 answer

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 implement TLS on the server and put in my LetsEncrypt…
Toby 1 Kenobi
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2
votes
0 answers

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 going out RESTfuly (To make sure APIs don't hang…
Dinal24
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2
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0 answers

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 CompanyC joins I ill give them a client certificate…
user464895
2
votes
1 answer

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, Flask then opens the gRPC connection and starts receiving data via a…
Paul Côté
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2
votes
1 answer

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 guestbook app. I then used almost the exact configuration…
Charles Green
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1
vote
2 answers

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 forward to backend. In HTTP2/gGPRC, client-server…
neojh
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1
vote
0 answers

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 with envoy proxy. We are running central envoy…
DaDaDom
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1
vote
1 answer

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 install GRPC. I have followed these…
Lewis Smith
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1
vote
0 answers

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 with specific error, then the client application…
Michał Getka
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1
vote
1 answer

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 behaviour is that this stream stays up until…
Julian Birch
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0
votes
1 answer

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 like this: ...
BluesSolo
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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:…
Aditya
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0
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0 answers

Google Endpoint Developer Portal for gRPC api reports errors

I've created my gRPC endpoints and uploaded my config file. The api works perfectly but the developer portal reports the following error. Not sure what am I supposed to do or how to troubleshoot this.
Razvan Cristian Lung
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0
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0 answers

gRPC via CloudFlare results in HTTP/2 internal error code 2

My setup: .Net gRPC Server <-> Nginx <-> CloudFlare <-> gRPC client (C#/Python) My .Net gRPC Server configured to support insecured http2, listen at port…
Hieu
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0
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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-basic=alice:alice123 server returns: gRPC failed…
Tfsur
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