62 lines
1.9 KiB
Markdown
62 lines
1.9 KiB
Markdown
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Overview
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--------
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"HTTP persistent connection, also called HTTP keep-alive, or HTTP connection reuse, is the idea of using a single TCP connection to send and receive multiple HTTP requests/responses, as opposed to opening a new connection for every single request/response pair. The newer HTTP/2 protocol uses the same idea and takes it further to allow multiple concurrent requests/responses to be multiplexed over a single connection." -- [Wikipedia](https://en.wikipedia.org/wiki/HTTP_persistent_connection)
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Example
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-------
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```C++
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#include <string>
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#include <memory>
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#include <cstdlib>
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#include <restbed>
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using namespace std;
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using namespace restbed;
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void get_intermittent_method_handler( const shared_ptr< Session > session )
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{
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session->close( OK, "intermittent resource request", { { "Content-Length", "29" }, { "Connection", "close" } } );
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}
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void get_persistent_method_handler( const shared_ptr< Session > session )
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{
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session->yield( OK, "persistent resource request", { { "Content-Length", "27" }, { "Connection", "keep-alive" } } );
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}
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int main( const int, const char** )
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{
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auto persistent = make_shared< Resource >( );
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persistent->set_path( "/resources/persistent" );
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persistent->set_method_handler( "GET", get_persistent_method_handler );
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auto intermittent = make_shared< Resource >( );
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intermittent->set_path( "/resources/intermittent" );
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intermittent->set_method_handler( "GET", get_intermittent_method_handler );
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auto settings = make_shared< Settings >( );
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settings->set_port( 1984 );
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Service service;
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service.publish( persistent );
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service.publish( intermittent );
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service.start( settings );
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return EXIT_SUCCESS;
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}
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```
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Build
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-----
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> $ clang++ -o example example.cpp -l restbed
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Execution
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---------
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> $ ./example
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>
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> $ curl -w'\n' -v 'http://localhost:1984/resources/persistent' 'http://localhost:1984/resources/intermittent'
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