Qpid Proton C++ API 0.39.0
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The client part of a request-response example.

The client part of a request-response example. Sends requests and prints out responses. Requires an intermediary that supports the AMQP 1.0 dynamic nodes on which the responses are received. The requests are sent through the 'examples' node.

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#include "options.hpp"
#include <iostream>
#include <vector>
class client : public proton::messaging_handler {
std::string url;
std::vector<std::string> requests;
proton::receiver receiver;
client(const std::string &u, const std::vector<std::string>& r) : url(u), requests(r) {}
sender = c.open_sender(url);
// Create a receiver requesting a dynamically created queue
// for the message source.
receiver_options opts = receiver_options().source(source_options().dynamic(true));
receiver = sender.connection().open_receiver("", opts);
void send_request() {
void on_message(proton::delivery &d, proton::message &response) override {
if (requests.empty()) return; // Spurious extra message!
std::cout << requests.front() << " => " << response.body() << std::endl;
if (!requests.empty()) {
} else {
int main(int argc, char **argv) {
std::string url("");
example::options opts(argc, argv);
opts.add_value(url, 'a', "address", "connect and send to URL", "URL");
try {
std::vector<std::string> requests;
requests.push_back("Twas brillig, and the slithy toves");
requests.push_back("Did gire and gymble in the wabe.");
requests.push_back("All mimsy were the borogroves,");
requests.push_back("And the mome raths outgrabe.");
client c(url, requests);
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;
void close()
Close the connection.
receiver open_receiver(const std::string &addr)
Open a receiver for addr on default_session().
A top-level container of connections, sessions, and links.
Definition: container.hpp:50
void run()
Run the container in the current thread.
returned< sender > open_sender(const std::string &addr_url)
Open a connection and sender for addr_url.
A received message.
Definition: delivery.hpp:40
An AMQP message.
Definition: message.hpp:48
void reply_to(const std::string &)
Set the address for replies.
void body(const value &x)
Set the body. Equivalent to body() = x.
Handler for Proton messaging events.
Definition: messaging_handler.hpp:69
virtual void on_message(delivery &, message &)
A message is received.
virtual void on_receiver_open(receiver &)
The remote peer opened the link.
virtual void on_container_start(container &)
The container event loop is starting.
Options for creating a receiver.
Definition: receiver_options.hpp:59
A channel for receiving messages.
Definition: receiver.hpp:41
class source source() const
Get the source node.
A channel for sending messages.
Definition: sender.hpp:40
tracker send(const message &m)
Send a message on the sender.
Options for creating a source node for a sender or receiver.
Definition: source_options.hpp:46
std::string address() const
The address of the source.
class connection connection() const
Return the connection for this transfer.
A connection to a remote AMQP peer.
A top-level container of connections, sessions, and links.
A received message.
An AMQP message.
Handler for Proton messaging events.
Options for creating a receiver.
Options for creating a source node for a sender or receiver.
A tracker for a sent message.