mirror of
https://github.com/boostorg/redis.git
synced 2026-02-22 03:32:22 +00:00
76 lines
1.9 KiB
C++
76 lines
1.9 KiB
C++
/* Copyright (c) 2019 - 2021 Marcelo Zimbres Silva (mzimbres at gmail dot com)
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
#include <iostream>
|
|
#include <chrono>
|
|
|
|
#include <aedis/aedis.hpp>
|
|
|
|
#include "utils.ipp"
|
|
|
|
using namespace aedis;
|
|
|
|
/** In previous examples we sent the command we were interested in and
|
|
* quit (closed) the connection. In this example we send a
|
|
* subscription to a channel and start reading for message
|
|
* indefinitely.
|
|
*
|
|
* Notice we store the id of the connection as seem by redis to be
|
|
* able to identify it.
|
|
*
|
|
* After starting the example you can send messages with the
|
|
* redis-client like this
|
|
*
|
|
* $ redis-cli -3
|
|
* 127.0.0.1:6379> PUBLISH channel1 mmmm
|
|
* (integer) 3
|
|
* 127.0.0.1:6379>
|
|
*
|
|
* The messages will then appear on the terminal you are running the
|
|
* example.
|
|
*/
|
|
net::awaitable<void> subscriber()
|
|
{
|
|
resp3::request req;
|
|
req.push(command::hello, "3");
|
|
req.push(command::subscribe, "channel1", "channel2");
|
|
|
|
auto socket = co_await make_connection("127.0.0.1", "6379");
|
|
co_await async_write(socket, req);
|
|
|
|
std::string buffer;
|
|
resp3::response resp;
|
|
|
|
// Reads the response to the hello command.
|
|
co_await async_read(socket, buffer, resp);
|
|
|
|
// Saves the id of this connection.
|
|
auto const id = resp.raw().at(8).data;
|
|
|
|
// Reads the response to the subscribe command.
|
|
co_await async_read(socket, buffer, resp);
|
|
|
|
// Loops to receive server pushes.
|
|
for (;;) {
|
|
resp.clear();
|
|
co_await async_read(socket, buffer, resp);
|
|
|
|
std::cout
|
|
<< "Subscriber " << id << ":\n"
|
|
<< resp << std::endl;
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
net::io_context ioc;
|
|
co_spawn(ioc, subscriber(), net::detached);
|
|
co_spawn(ioc, subscriber(), net::detached);
|
|
co_spawn(ioc, subscriber(), net::detached);
|
|
ioc.run();
|
|
}
|