http

HTTP Unary calling (Request-Response).

In HTTP request-response calling, both the client and the server can send requests and responses. The client uses HTTP request methods (such as GET, POST, etc.) to send requests, and specifies the requested URL, HTTP protocol version, request headers, request body and other related information. The server receives the request, processes it, and generates an HTTP response, which includes HTTP status code, response headers, response body, and other related information. After the request is processed, the HTTP connection is automatically closed, and the interaction between the client and the server ends.

Usage

We can use the following command to view the directory tree.

$ examples/features/http/
examples/features/http/
├── client
│   ├── BUILD
│   ├── client.cc
│   └── trpc_cpp_fiber.yaml
├── CMakeLists.txt
├── README.md
├── run_cmake.sh
├── run.sh
└── server
    ├── BUILD
    ├── http_server.cc
    └── trpc_cpp_fiber.yaml

We can use the following script to quickly compile and run a program.

sh examples/features/http/run.sh

• Compilation

We can run the following command to compile the client and server programs.

bazel build  //examples/features/http/server:http_server
bazel build  //examples/features/http/client:client

Alternatively, you can use cmake.

# build trpc-cpp libs first, if already build, just skip this build process.
$ mkdir -p build && cd build && cmake -DCMAKE_BUILD_TYPE=Release .. && make -j8 && cd -
# build examples/http
$ mkdir -p examples/features/http/build && cd examples/features/http/build && cmake -DCMAKE_BUILD_TYPE=Release .. && make -j8 && cd -

• Run the server program

We can run the following command to start the server program.

CMake build targets can be found at build of this directory, you can replace below server&client binary path when you use cmake to compile.

bazel-bin/examples/features/http/server/http_server --config=examples/features/http/server/trpc_cpp_fiber.yaml

• Run the client program

We can run the following command to start the client program.

bazel-bin/examples/features/http/client/client --client_config=examples/features/http/client/trpc_cpp_fiber.yaml 

The content of the output from the client program is as follows:

name: GET string, ok: 1
name: GET json, ok: 1
name: GET http response, ok: 1
name: GET http response(not found), ok: 1
name: HEAD string, ok: 1
name: POST string, ok: 1
name: POST json, ok: 1
name: POST string, then wait http response, ok: 1
name: UNARY invoking, ok: 1
final result of http calling: 1