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# Test service endpoint for W3C validation
This test application is intended to be used as a test service for the [W3C
Distributed Tracing Validation
Service](https://github.com/w3c/trace-context/tree/master/test). It is
implemented according to [these
instructions](https://github.com/w3c/trace-context/tree/master/test#implement-test-service).
## Usage
1: Build and start the test service endpoint:
```sh
./w3c_tracecontext_http_test_server
Listening to http://localhost:30000/test
```
A custom port number for the test service to listen to can be specified:
```sh
./w3c_tracecontext_http_test_server 31339
Listening to http://localhost:31339/test
```
The test service will print the full URI that the validation service can connect
to.
2: In a different terminal, set up and start the validation service according to
the
[instructions](https://github.com/w3c/trace-context/tree/master/test#run-test-cases),
giving the address of the test service endpoint as argument:
```sh
python test.py http://localhost:31339/test
```
One can also use the `Dockerfile` provided in this folder to conveniently run
the validation service:
```sh
docker build --tag w3c_driver .
docker run --network host w3c_driver http://localhost:31339/test
```
3: The validation service will run the test suite and print detailed test
results.
4: Stop the test service by invoking `/stop`. Make sure to use the correct port number.
```sh
# Assuming the service is currently running at port 30000
curl http://localhost:30000/stop
```
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