Questions tagged [grpc]

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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-...
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24 views

gRPC protocol buffer can be built into client side contract, does that mean every backend change forcing the frontend to update?

gRPC protocol buffer can be built into client side contract, does that mean every backend change forcing the frontend to update? What about in microservice world, deploy the gRPC changes on one ...
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1answer
536 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 ...
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1answer
347 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 ...
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214 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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2k 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 ...
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1answer
96 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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2answers
702 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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0answers
363 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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660 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 ...