Restbed

Restbed is a comprehensive and consistent programming model for building applications that require seamless and secure communication over HTTP, with the ability to model a range of business processes, designed to target mobile, tablet, desktop and embedded production environments.

It's akin to embedding NGINX into your companies own product line. -- Solutions Architect, Bellrock Technology

Features

Feature	Description
WebSockets	Full-duplex communication channels over a single TCP connection.
Server-Sent Events	Server-Sent Events enables efficient server-to-client streaming of text-based event data—e.g., real-time notifications or updates generated on the server.
Comet	Long polling model to allow long-held HTTP requests for pushing data from the server to client.
SSL/TLS	Secure over the wire communication allowing you to transmit private data online.
Session Management	Create custom HTTP session persistence and management logic.
HTTP Pipelining	A technique allowing multiple HTTP requests to be sent on a single TCP connection without waiting for the corresponding responses.
Path Parameters	Annotate URIs with custom path parameters such as resource keys, revisions, etc...
Query Parameters	Automated query parameter parsing.
Header Filters	Filter incoming HTTP requests by headers.
Logging	Customise how and where log entries are created.
Multi-Path Resources	Give a resource multiple paths for improved readability.
Customisable Methods	Add your own custom HTTP methods.
Compression	Adaptability to address any form of compression GZip, Deflate, etc...
Encoding	Adaptability to address any form of encoding UTF-32, ASCII, etc...
Rules Engine	Reduce complexity by processing incoming requests with readable units of code.
HTTP/HTTPS	Built in client capabilities with optional SSL peer certificate verification. Deprecated
IPv4/IPv6	Internet Protocol Version 4/6 Network Support.
Architecture	Asynchronous single or multi-threaded architecture, capable of addressing the C10K problem.
Converters	Built-in Path, Query, and Header conversions for primary data-types.
Authentication	Separate Service and/or Resource level authentication.
Error Handling	Separate Service and/or Resource level error handling.
Address Binding	Bind HTTP and/or HTTPS services to separate IP addresses.
Signal Handling	Capture OS generated process signals.
Documentation	High-quality documentation covering the architecture and API.
Compliance	Flexibility to address HTTP 1.0/1.1+ compliance.
Mature	Secure, Stable, and extensively tested since 2013.
Community	Active, vibrant and energetic open source community.
Support	Commercial support is available from Corvusoft.

Example

#include <memory>
#include <cstdlib>
#include <restbed>

using namespace std;
using namespace restbed;

void post_method_handler( const shared_ptr< Session > session )
{
    const auto request = session->get_request( );

    int content_length = request->get_header( "Content-Length", 0 );

    session->fetch( content_length, [ ]( const shared_ptr< Session > session, const Bytes & body )
    {
        fprintf( stdout, "%.*s\n", ( int ) body.size( ), body.data( ) );
        session->close( OK, "Hello, World!", { { "Content-Length", "13" } } );
    } );
}

int main( const int, const char** )
{
    auto resource = make_shared< Resource >( );
    resource->set_path( "/resource" );
    resource->set_method_handler( "POST", post_method_handler );

    auto settings = make_shared< Settings >( );
    settings->set_port( 1984 );
    settings->set_default_header( "Connection", "close" );

    Service service;
    service.publish( resource );
    service.start( settings );

    return EXIT_SUCCESS;
}

More in-depth examples can be found here. To see Restbed used in anger, please visit Corvusoft's RestQ project.

License

The Restbed framework is dual licensed; See LICENSE for full details.

Support

Please contact sales@corvusoft.co.uk, for support and licensing options including bespoke software development, testing, design consultation, training, mentoring and code review.

Please submit all enhancements, proposals, and defects via the issue tracker; Alternatively ask a question on StackOverflow tagged #restbed.

Build

git clone --recursive https://github.com/corvusoft/restbed.git
mkdir restbed/build
cd restbed/build
cmake [-DBUILD_SSL=NO] [-DBUILD_TESTS=NO] ..
make install
make test

You will now find all required components installed in the distribution sub-folder.

Building with external libraries

If you wish to build with external libraries (OpenSSL, ASIO).

git clone https://github.com/corvusoft/restbed.git
mkdir restbed/build
cd restbed/build
cmake [-DBUILD_SSL=NO] [-DBUILD_TESTS=NO] ..
make install
make test

Windows Build Instructions

For Microsoft Visual Studio instructions please see feature #17.

Building restbed - Using vcpkg

You can download and install restbed using the vcpkg dependency manager:

git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
./bootstrap-vcpkg.sh
./vcpkg integrate install
./vcpkg install restbed

The restbed port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please create an issue or pull request on the vcpkg repository.

Documentation

This codebase is intended to be as self documenting as possible. We have supplied many examples and test suites to help aid developers.

You can locate the latest design and API documentation here.

Minimum Requirements

Resource	Requirement
Compiler	C++14 compliant or above
OS	BSD, Linux, Mac OSX, Windows, Raspbian

Road Map

Milestone	Feature	Status
0.0	Asynchronous HTTP Service	complete
1.0	HTTP 1.0 Compliance	complete
2.0	HTTP 1.1 Compliance	complete
2.5	Secure Socket Layer	complete
2.5	Simultaneous Network Ports (HTTP/HTTPS)	complete
3.0	Rules Engine	complete
3.5	Schedule Tasks on Service run-loop	complete
3.5	Multi-Threaded service capability	complete
3.5	Bind Service to specific Address	complete
3.5	Session Management	complete
4.0	HTTP Client	complete
4.0	Signal Handling	complete
4.5	API Documentation	complete
4.5	Web Sockets	complete
5.0	Client-side SSL certificates	development
5.0	Resource Caching	development
5.0	Runtime Modifications	development
5.0	HTTP 2 compliance	development
5.0	Refactor, Reduce, Reuse	pending

Contact

Method	Description
Twitter	Tweet us your questions & feature requests.
support@corvusoft.co.uk	Support related queries.
sales@corvusoft.co.uk	Sale related queries.

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