Questions tagged [grpc]

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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, ...
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16 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 ...
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115 views

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 50052: webBuilder....
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1answer
76 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&...
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25 views

GRPC (HTTP2) with GCP instance

I am testing out both GRPC, which uses HTTP2, and the nanos unikernel. I have written a small test server in Golang that has an internal GRPC server that has requests made by a client connection in ...
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24 views

ELB dropping persistent gRPC server-side stream

We're setting up a load balancer for our IoT server. There is (currently) a single gRPC server, to which the devices must connect. The load balancer is set up to perform HTTPS encryption, and allow ...
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533 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 ...
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2k 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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1answer
2k 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
1k 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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270 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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1answer
4k 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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123 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
953 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
387 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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826 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 ...