246 lines
10 KiB
C++
246 lines
10 KiB
C++
#include "server_https.hpp"
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#include "client_https.hpp"
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//Added for the json-example
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#define BOOST_SPIRIT_THREADSAFE
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#include <boost/property_tree/ptree.hpp>
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#include <boost/property_tree/json_parser.hpp>
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//Added for the default_resource example
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#include <fstream>
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#include <boost/filesystem.hpp>
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#include <vector>
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#include <algorithm>
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#include "crypto.hpp"
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using namespace std;
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//Added for the json-example:
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using namespace boost::property_tree;
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typedef SimpleWeb::Server<SimpleWeb::HTTPS> HttpsServer;
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typedef SimpleWeb::Client<SimpleWeb::HTTPS> HttpsClient;
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//Added for the default_resource example
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void default_resource_send(const HttpsServer &server, const shared_ptr<HttpsServer::Response> &response,
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const shared_ptr<ifstream> &ifs);
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int main() {
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//HTTPS-server at port 8080 using 1 thread
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//Unless you do more heavy non-threaded processing in the resources,
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//1 thread is usually faster than several threads
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HttpsServer server("server.crt", "server.key");
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server.config.port=8080;
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//Add resources using path-regex and method-string, and an anonymous function
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//POST-example for the path /string, responds the posted string
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server.resource["^/string$"]["POST"]=[](shared_ptr<HttpsServer::Response> response, shared_ptr<HttpsServer::Request> request) {
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//Retrieve string:
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auto content=request->content.string();
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//request->content.string() is a convenience function for:
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//stringstream ss;
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//ss << request->content.rdbuf();
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//auto content=ss.str();
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*response << "HTTP/1.1 200 OK\r\nContent-Length: " << content.length() << "\r\n\r\n" << content;
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// Alternatively, use one of the convenience functions, for instance:
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// response->write(content);
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};
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//POST-example for the path /json, responds firstName+" "+lastName from the posted json
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//Responds with an appropriate error message if the posted json is not valid, or if firstName or lastName is missing
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//Example posted json:
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//{
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// "firstName": "John",
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// "lastName": "Smith",
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// "age": 25
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//}
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server.resource["^/json$"]["POST"]=[](shared_ptr<HttpsServer::Response> response, shared_ptr<HttpsServer::Request> request) {
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try {
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ptree pt;
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read_json(request->content, pt);
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auto name=pt.get<string>("firstName")+" "+pt.get<string>("lastName");
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*response << "HTTP/1.1 200 OK\r\n"
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<< "Content-Type: application/json\r\n"
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<< "Content-Length: " << name.length() << "\r\n\r\n"
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<< name;
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}
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catch(const exception &e) {
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*response << "HTTP/1.1 400 Bad Request\r\nContent-Length: " << strlen(e.what()) << "\r\n\r\n" << e.what();
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}
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// Alternatively, using a convenience function:
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// try {
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// ptree pt;
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// read_json(request->content, pt);
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// auto name=pt.get<string>("firstName")+" "+pt.get<string>("lastName");
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// response->write(name, {{"Content-Type", "application/json"}});
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// }
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// catch(const exception &e) {
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// response->write(SimpleWeb::StatusCode::client_error_bad_request, e.what());
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// }
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};
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//GET-example for the path /info
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//Responds with request-information
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server.resource["^/info$"]["GET"]=[](shared_ptr<HttpsServer::Response> response, shared_ptr<HttpsServer::Request> request) {
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stringstream stream;
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stream << "<h1>Request from " << request->remote_endpoint_address << " (" << request->remote_endpoint_port << ")</h1>";
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stream << request->method << " " << request->path << " HTTP/" << request->http_version << "<br>";
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for(auto &header: request->header)
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stream << header.first << ": " << header.second << "<br>";
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//find length of content_stream (length received using content_stream.tellp())
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stream.seekp(0, ios::end);
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*response << "HTTP/1.1 200 OK\r\nContent-Length: " << stream.tellp() << "\r\n\r\n" << stream.rdbuf();
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// Alternatively, using a convenience function:
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// stringstream stream;
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// stream << "<h1>Request from " << request->remote_endpoint_address << " (" << request->remote_endpoint_port << ")</h1>";
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// stream << request->method << " " << request->path << " HTTP/" << request->http_version << "<br>";
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// for(auto &header: request->header)
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// stream << header.first << ": " << header.second << "<br>";
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// response->write(stream);
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};
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//GET-example for the path /match/[number], responds with the matched string in path (number)
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//For instance a request GET /match/123 will receive: 123
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server.resource["^/match/([0-9]+)$"]["GET"]=[](shared_ptr<HttpsServer::Response> response, shared_ptr<HttpsServer::Request> request) {
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string number=request->path_match[1];
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*response << "HTTP/1.1 200 OK\r\nContent-Length: " << number.length() << "\r\n\r\n" << number;
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// Alternatively, using a convenience function:
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// response->write(request->path_match[1]);
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};
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//Get example simulating heavy work in a separate thread
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server.resource["^/work$"]["GET"]=[](shared_ptr<HttpsServer::Response> response, shared_ptr<HttpsServer::Request> /*request*/) {
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thread work_thread([response] {
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this_thread::sleep_for(chrono::seconds(5));
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string message="Work done";
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*response << "HTTP/1.1 200 OK\r\nContent-Length: " << message.length() << "\r\n\r\n" << message;
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});
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work_thread.detach();
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};
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//Default GET-example. If no other matches, this anonymous function will be called.
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//Will respond with content in the web/-directory, and its subdirectories.
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//Default file: index.html
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//Can for instance be used to retrieve an HTML 5 client that uses REST-resources on this server
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server.default_resource["GET"]=[&server](shared_ptr<HttpsServer::Response> response, shared_ptr<HttpsServer::Request> request) {
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try {
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auto web_root_path=boost::filesystem::canonical("web");
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auto path=boost::filesystem::canonical(web_root_path/request->path);
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//Check if path is within web_root_path
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if(distance(web_root_path.begin(), web_root_path.end())>distance(path.begin(), path.end()) ||
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!equal(web_root_path.begin(), web_root_path.end(), path.begin()))
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throw invalid_argument("path must be within root path");
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if(boost::filesystem::is_directory(path))
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path/="index.html";
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SimpleWeb::CaseInsensitiveMultimap header;
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// Uncomment the following line to enable Cache-Control
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// header.emplace("Cache-Control", "max-age=86400");
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#ifdef HAVE_OPENSSL
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// Uncomment the following lines to enable ETag
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// {
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// ifstream ifs(path.string(), ifstream::in | ios::binary);
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// if(ifs) {
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// auto hash=SimpleWeb::Crypto::to_hex_string(SimpleWeb::Crypto::md5(ifs));
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// header.emplace("ETag", "\""+hash+"\"");
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// auto it=request->header.find("If-None-Match");
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// if(it!=request->header.end()) {
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// if(!it->second.empty() && it->second.compare(1, hash.size(), hash)==0) {
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// response->write(SimpleWeb::StatusCode::redirection_not_modified, header);
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// return;
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// }
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// }
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// }
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// else
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// throw invalid_argument("could not read file");
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// }
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#endif
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auto ifs=make_shared<ifstream>();
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ifs->open(path.string(), ifstream::in | ios::binary | ios::ate);
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if(*ifs) {
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auto length=ifs->tellg();
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ifs->seekg(0, ios::beg);
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header.emplace("Content-Length", to_string(length));
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response->write(header);
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default_resource_send(server, response, ifs);
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}
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else
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throw invalid_argument("could not read file");
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}
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catch(const exception &e) {
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response->write(SimpleWeb::StatusCode::client_error_bad_request, "Could not open path "+request->path+": "+e.what());
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}
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};
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server.on_error=[](std::shared_ptr<HttpsServer::Request> /*request*/, const SimpleWeb::error_code &/*ec*/) {
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// handle errors here
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};
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thread server_thread([&server](){
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//Start server
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server.start();
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});
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//Wait for server to start so that the client can connect
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this_thread::sleep_for(chrono::seconds(1));
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//Client examples
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//Second Client() parameter set to false: no certificate verification
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HttpsClient client("localhost:8080", false);
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// synchronous request examples
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auto r1=client.request("GET", "/match/123");
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cout << r1->content.rdbuf() << endl; // Alternatively, use the convenience function r1->content.string()
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string json_string="{\"firstName\": \"John\",\"lastName\": \"Smith\",\"age\": 25}";
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auto r2=client.request("POST", "/string", json_string);
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cout << r2->content.rdbuf() << endl;
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// asynchronous request example
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client.request("POST", "/json", json_string, [](std::shared_ptr<HttpsClient::Response> response, const SimpleWeb::error_code &ec) {
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if(!ec)
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cout << response->content.rdbuf() << endl;
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});
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client.io_service->reset(); // needed because the io_service has been run already in the synchronous examples
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client.io_service->run();
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server_thread.join();
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return 0;
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}
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void default_resource_send(const HttpsServer &server, const shared_ptr<HttpsServer::Response> &response,
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const shared_ptr<ifstream> &ifs) {
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//read and send 128 KB at a time
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static vector<char> buffer(131072); // Safe when server is running on one thread
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streamsize read_length;
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if((read_length=ifs->read(&buffer[0], buffer.size()).gcount())>0) {
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response->write(&buffer[0], read_length);
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if(read_length==static_cast<streamsize>(buffer.size())) {
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server.send(response, [&server, response, ifs](const SimpleWeb::error_code &ec) {
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if(!ec)
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default_resource_send(server, response, ifs);
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else
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cerr << "Connection interrupted" << endl;
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});
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}
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}
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}
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