Comments (7)
It's there. For non-streaming RPCs (e.g. https://github.com/grpc/grpc-go/blob/master/examples/route_guide/server/server.go#L75) it is the first arg. For streaming RPCs (e.g. https://github.com/grpc/grpc-go/blob/master/examples/route_guide/server/server.go#L86) it is available by calling the Context
method on the stream value.
from grpc-go.
Ah. I only saw the steaming examples. Thanks for this 👍
from grpc-go.
Reopening this for a clarification.
On the client, if I do this:
ctx = ctx.WithValue(someKey, someValue)
And on the server:
value := ctx.Value(someKey)
Should I not expect to get the value back?
from grpc-go.
You should not expect that. You need to use the metadata mechanism.
from grpc-go.
I can see that a deadline set on the client gets propagated to the server. Any reason for excluding the values (apart from serialization/deserialization headaches) ?
from grpc-go.
Those are a bit more than headaches. They are major design issues. And there's only a limited set of context values that make sense to transit across machines transparently.
from grpc-go.
I just saw https://godoc.org/google.golang.org/grpc/metadata
Thanks for the clarification though :)
from grpc-go.
Related Issues (20)
- How to make server-stream run in a non-blocking state and handle other requests HOT 10
- Improve Logger Performance When Disabled HOT 5
- Flaky Test: RingHash_ReattemptWhenGoingFromTransientFailureToIdle
- xdsclient: reduce the number of ADS requests
- grpctest: minor improvements to the test logger implementation
- xdsclient: support environment variable protection for fallback
- Incorporate `mem` package into custom HTTP/2 Framer
- Examples using the `experimental` stats package HOT 3
- about grpc.NewClient,It will not check the validity of the target ? HOT 1
- Minor typos HOT 7
- clientconn: Subconn state may transition from CONNECTING directly to IDLE HOT 3
- Flaky Test: Balancer_TwoAddresses_WeightExpiration HOT 2
- Add a test for scenarios touched in 7505
- RetryPolicy backoff value being randomized makes no sense compared to C++ reference client HOT 3
- pickfirst: Don't use internal.ShuffleAddressListForTesting directly HOT 1
- grpc usage on unix sockets: strange grpc registry behaviour HOT 2
- Question about option experimental.WithRecvBufferPool HOT 2
- Flake: Test/BlockingPickSCNotReady
- Valid allow-all Authz Policy return permission denied HOT 10
- bug: `FATAL: [core] grpc: Server.RegisterService found duplicate service registration for "grpc.health.v1.Health"` HOT 3
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from grpc-go.