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131 lines
4.0 KiB
C++
Executable File
131 lines
4.0 KiB
C++
Executable File
/*
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This example illustrates the use of the HTTP extension to the server object
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from the dlib C++ Library.
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It creates a server that always responds with a simple HTML form.
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To view the page this program displays you should go to http://localhost:5000
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*/
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#include <iostream>
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#include <sstream>
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#include <string>
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#include "dlib/server.h"
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using namespace dlib;
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using namespace std;
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class web_server : public server::http_1a_c
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{
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void on_request (
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const std::string& path,
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std::string& result,
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const map_type& queries,
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const map_type& cookies,
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queue_type& new_cookies,
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const map_type& incoming_headers,
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map_type& response_headers,
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const std::string& foreign_ip,
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const std::string& local_ip,
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unsigned short foreign_port,
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unsigned short local_port
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)
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{
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try
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{
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ostringstream sout;
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// We are going to send back a page that contains an HTML form with two text input fields.
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// One field called name. The HTML form uses the post method but could also use the get
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// method (just change method='post' to method='get').
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sout << " <html> <body> "
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<< "<form action='/form_handler' method='post'> "
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<< "User Name: <input name='user' type='text'><br> "
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<< "User password: <input name='pass' type='text'> <input type='submit'> "
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<< " </form>";
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sout << "<br> path = " << path << endl;
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sout << "<br> foreign_ip = " << foreign_ip << endl;
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sout << "<br> foreign_port = " << foreign_port << endl;
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sout << "<br> local_ip = " << local_ip << endl;
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sout << "<br> local_port = " << local_port << endl;
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// If this request is the result of the user submitting the form then echo back
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// the submission.
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if (path == "/form_handler")
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{
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sout << "<h2> Stuff from the query string </h2>" << endl;
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sout << "<br> user = " << queries["user"] << endl;
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sout << "<br> pass = " << queries["pass"] << endl;
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// save these form submissions as cookies.
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string cookie;
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cookie = "user=" + queries["user"];
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new_cookies.enqueue(cookie);
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cookie = "pass=" + queries["pass"];
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new_cookies.enqueue(cookie);
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}
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// Echo any cookies back to the client browser
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sout << "<h2>Cookies we got back from the server</h2>";
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cookies.reset();
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while (cookies.move_next())
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{
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sout << "<br/>" << cookies.element().key() << " = " << cookies.element().value() << endl;
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}
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sout << "<br/><br/>";
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sout << "<h2>HTTP Headers we sent to the server</h2>";
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// Echo out all the HTTP headers we received from the client web browser
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incoming_headers.reset();
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while (incoming_headers.move_next())
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{
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sout << "<br/>" << incoming_headers.element().key() << ": " << incoming_headers.element().value() << endl;
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}
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sout << "</body> </html>";
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result = sout.str();
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}
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catch (exception& e)
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{
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cout << e.what() << endl;
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}
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}
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};
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// create an instance of our web server
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web_server our_web_server;
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void thread()
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{
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cout << "Press enter to end this program" << endl;
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cin.get();
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// this will cause the server to shut down which will in turn cause
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// our_web_server.start() to unblock and thus the main() function will terminate.
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our_web_server.clear();
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}
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int main()
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{
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try
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{
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// create a thread that will listen for the user to end this program
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thread_function t(thread);
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// make it listen on port 5000
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our_web_server.set_listening_port(5000);
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our_web_server.start();
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}
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catch (exception& e)
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{
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cout << e.what() << endl;
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}
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}
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