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.

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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* Unless required by applicable law or agreed to in writing,
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* KIND, either express or implied. See the License for the
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#include <proton/connection.hpp>
#include <proton/container.hpp>
#include <proton/message.hpp>
#include <proton/message_id.hpp>
#include <proton/messaging_handler.hpp>
#include <iostream>
#include <map>
#include <string>
#include <cctype>
#include "fake_cpp11.hpp"
class server : public proton::messaging_handler {
std::string conn_url_;
std::string addr_;
proton::connection conn_;
std::map<std::string, proton::sender> senders_;
public:
server(const std::string& u, const std::string& a) :
conn_url_(u), addr_(a) {}
void on_container_start(proton::container& c) OVERRIDE {
conn_ = c.connect(conn_url_);
conn_.open_receiver(addr_);
std::cout << "Server connected to " << conn_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] = conn_.open_sender(reply_to);
}
senders_[reply_to].send(reply);
}
};
int main(int argc, char** argv) {
try {
std::string conn_url = argc > 1 ? argv[1] : "//127.0.0.1:5672";
std::string addr = argc > 2 ? argv[2] : "examples";
server srv(conn_url, addr);
proton::container(srv).run();
return 0;
} catch (const std::exception& e) {
std::cerr << e.what() << std::endl;
}
return 1;
}
messaging_handler.hpp
message.hpp
proton::container
A top-level container of connections, sessions, and links.
Definition: container.hpp:50
proton::messaging_handler::on_container_start
virtual void on_container_start(container &)
The container event loop is starting.
proton::connection
A connection to a remote AMQP peer.
Definition: connection.hpp:43
proton::messaging_handler::on_message
virtual void on_message(delivery &, message &)
A message is received.
proton::delivery
A received message.
Definition: delivery.hpp:39
connection.hpp
proton::messaging_handler
A handler for Proton messaging events.
Definition: messaging_handler.hpp:62
proton::message::correlation_id
void correlation_id(const message_id &)
Set the ID for matching related messages.
proton::connection::open_receiver
receiver open_receiver(const std::string &addr)
Open a receiver for addr on default_session().
proton::connection::open_sender
sender open_sender(const std::string &addr)
Open a sender for addr on default_session().
message_id.hpp
proton::message::body
void body(const value &x)
Set the body. Equivalent to body() = x.
proton::message::reply_to
void reply_to(const std::string &)
Set the address for replies.
proton::container::run
void run()
Run the container in the current thread.
container.hpp
proton::container::connect
returned< connection > connect(const std::string &conn_url, const connection_options &conn_opts)
Connect to conn_url and send an open request to the remote peer.
proton::message::to
void to(const std::string &)
Set the destination address.
proton::message
An AMQP message.
Definition: message.hpp:50