Served

Overview

Served is a C++ library for building high performance RESTful web servers.

Served builds upon Boost.ASIO to provide a simple API for developers to create HTTP services in C++.

Features:

• HTTP 1.1 compatible request parser
• Middleware / plug-ins
• Flexible handler API
• Cross-platform compatible

Installation

Requirements

• [Required] - Boost (1.53 or newer)
• [Optional] - Ragel

Building

$ git clone git@github.com:meltwater/served.git
$ mkdir served.build && cd served.build
$ cmake ../served && make

Or, using bazel:

$ git clone git@github.com:meltwater/served.git
$ cd served
$ bazel build :served
$ bazel test :served-test

Getting Started

The most basic example of creating a server and handling a HTTP GET for the path /hello:

#include <served/served.hpp>

int main(int argc, char const* argv[]) {
	// Create a multiplexer for handling requests
	served::multiplexer mux;

	// GET /hello
	mux.handle("/hello")
		.get([](served::response & res, const served::request & req) {
			res << "Hello world!";
		});

	// Create the server and run with 10 handler threads.
	served::net::server server("127.0.0.1", "8080", mux);
	server.run(10);

	return (EXIT_SUCCESS);
}

To test the above example, you could run the following command from a terminal:

$ curl http://localhost:8080/hello -ivh

You can also use named path variables for REST parameters:

mux.handle("/users/{id}")
	.get([](served::response & res, const served::request & req) {
		res << "User: " << req.params["id"];
	});

To test the above example, you could run the following command from a terminal:

$ curl http://localhost:8080/users/dave -ivh

If you need to be more specific, you can specify a pattern to use to validate the parameter:

mux.handle("/users/{id:\\d+}")
	.get([](served::response & res, const served::request & req) {
		res << "id: " << req.params["id"];
	});

To test the above example, you could run the following command from a terminal:

$ curl http://localhost:8080/users/1 -ivh

Method handlers can have arbitrary complexity:

mux.handle("/users/{id:\\d+}/{property}/{value:[a-zA-Z]+")
	.get([](served::response & res, const served::request & req) {
		// handler logic
	});

If you want to automatically log requests, you could use a plugin (or make your own):

#include <served/plugins.hpp>
// ...
mux.use_after(served::plugin::access_log);

You can also access the other elements of the request, including headers and components of the URI:

mux.handle("/posts/{id:\\d+}")
	.post([](served::response & res, const served::request & req) {
		if (req.header("Content-Type") != "application/json") {
			served::response::stock_reply(400, res);
			return;
		}
		res << req.url().fragment();
	});

Compile Options

Option	Purpose
SERVED_BUILD_SHARED	Build shared library
SERVED_BUILD_STATIC	Build static library
SERVED_BUILD_TESTS	Build unit test suite
SERVED_BUILD_EXAMPLES	Build bundled examples
SERVED_BUILD_DEB	Build DEB package (note: you must also have dpkg installed)
SERVED_BUILD_RPM	Build RPM package (note: you must also have rpmbuild installed)

System Compatibility

OS	Compiler	Status
Linux	GCC 4.8	Working
OSX	Clang 3.5	Working

TODO

• Chunked encoding support

Contributing

Pull requests are welcome.

Authors

• @cjgdev
• @Jeffail

Copyright

See LICENSE.md document