server.cpp

The server part of a request-response example, that receives requests via the examples node, converts the body to uppercase and sends the result back to the indicated reply address.

/*
*
* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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#include "options.hpp"
#include <proton/connection.hpp>
#include <proton/default_container.hpp>
#include <proton/messaging_handler.hpp>
#include <proton/tracker.hpp>
#include <proton/url.hpp>
#include <iostream>
#include <map>
#include <string>
#include <cctype>
#include "fake_cpp11.hpp"
class server : public proton::messaging_handler {
private:
typedef std::map<std::string, proton::sender> sender_map;
proton::url url;
proton::connection connection;
sender_map senders;
public:
server(const std::string &u) : url(u) {}
void on_container_start(proton::container &c) OVERRIDE {
connection = c.connect(url);
connection.open_receiver(url.path());
std::cout << "server connected to " << url << std::endl;
}
std::string to_upper(const std::string &s) {
std::string uc(s);
size_t l = uc.size();
for (size_t i=0; i<l; i++)
uc[i] = static_cast<char>(std::toupper(uc[i]));
return uc;
}
void on_message(proton::delivery &, proton::message &m) OVERRIDE {
std::cout << "Received " << m.body() << std::endl;
std::string reply_to = m.reply_to();
proton::message reply;
reply.to(reply_to);
reply.body(to_upper(proton::get<std::string>(m.body())));
reply.correlation_id(m.correlation_id());
if (!senders[reply_to]) {
senders[reply_to] = connection.open_sender(reply_to);
}
senders[reply_to].send(reply);
}
};
int main(int argc, char **argv) {
std::string address("amqp://0.0.0.0:5672/examples");
example::options opts(argc, argv);
opts.add_value(address, 'a', "address", "listen on URL", "URL");
try {
opts.parse();
server srv(address);
proton::default_container(srv).run();
return 0;
} catch (const example::bad_option& e) {
std::cout << opts << std::endl << e.what() << std::endl;
} catch (const std::exception& e) {
std::cerr << e.what() << std::endl;
}
return 1;
}