boost redis library not working with valkey server (redis fork)

[PristalMMangattu]

Hi, I have the following program using boost redis library with valkey,

==============START===============================

include <boost/asio.hpp>

include <boost/redis.hpp>

include <boost/redis/src.hpp>

include <boost/system/error_code.hpp>

include

include

include

namespace net = boost::asio; using boost::redis::connection; using boost::redis::request; using boost::redis::response;

int main() { try { net::io_context io_context;

    // Create a Redis connection
            auto redis_conn = std::make_shared<connection>(io_context);

    // Create a config object
    boost::redis::config cfg;
    cfg.addr = {"127.0.0.1", "8767"};
            cfg.username = "default";

    // Connect to the Redis server
    redis_conn->async_run(cfg, {boost::redis::logger::level::debug}, [redis_conn, &io_context](const boost::system::error_code& ec) {
                    if (ec) {
            std::cout << "Error connecting to Redis: " << ec.message() << std::endl;
            return;
        }

                    std::cout << "Connected to the server\n";
                    io_context.stop();
    });

            std::cout << "Running io_context...\n";
    // Run the io_context to perform asynchronous operations
    io_context.run();
            std::cout << "io_context completed\n";
} catch (const std::exception& e) {
    std::cout << "Error: " << e.what() << std::endl;
    return 1;
}

return 0;

} ============END================================

Issue : Even though when this program is run, I see the connection is getting accepted in valkey logs like below,

=================START=========================== 1369804:M 20 Nov 2024 21:29:02.115 - DB 0: 3 keys (0 volatile) in 4 slots HT. 1369804:M 20 Nov 2024 21:29:05.613 - Accepted 127.0.0.1:45132 <=== Connected here. 1369804:M 20 Nov 2024 21:29:07.149 - DB 0: 3 keys (0 volatile) in 4 slots HT. =================END===========================

I don't see "Connected to the server\n" message getting printed, which means the completion token is not getting called. The following is redis logs,

==================START========================== valkey_try$ ./server Running io_context... (Boost.Redis) run-all-op: resolve addresses 127.0.0.1:8767 (Boost.Redis) run-all-op: connected to endpoint 127.0.0.1:8767 (Boost.Redis) writer-op: 85 bytes written. (Boost.Redis) reader-op: 171 bytes read. (Boost.Redis) hello-op: Success (Boost.Redis) writer-op: 32 bytes written. (Boost.Redis) reader-op: 18 bytes read. (Boost.Redis) writer-op: 32 bytes written. (Boost.Redis) reader-op: 18 bytes read. ==================END===========================

I see valkey also supports resp3, will boost redis work with valkey ? Is there any issue with the code I am trying ?

[criatura2]

The program looks ok, you don't see "Connected to the server\n" printed because async_run will can its callback only when it finishes running. You can try calling async_exec to see if you can send commands.

[PristalMMangattu]

@criatura2 Thank you looking into the Issue. I have verified that, I could send a command using async_exec. I was under the impression that completion token would be executed on successful connection.

I know this is not a platform for queries but since API level detailed documentation is missing in, https://www.boost.org/doc/libs/1_84_0/libs/redis/doc/html/index.html

Following is what I understood, please let me know if I am wrong somewhere,

1. completion token is only executed if the connection is terminated by the client itself using redis_conn.cancel()
2. corollary is that, completion token for async_exec is required only for stopping the io_context(if required) or for cleanup purpose.