net_tcp_server.c

TCP server: listen on a port, accept one connection, echo bytes.

TCP server: listen on a port, accept one connection, echo bytes.Demonstrates: bj_listen_tcp, bj_accept_tcp, bj_tcp_recv, bj_tcp_send. Pair with net_tcp_client.c to test.

 
#include <banjo/log.h>
#include <banjo/main.h>
#include <banjo/net.h>
#include <banjo/system.h>
 
#include <limits.h>
#include <stdio.h>
 
int main(int argc, char* argv[]) {
    (void)argc;
    (void)argv;
 
    if (!bj_begin(BJ_NETWORK_SYSTEM, 0)) {
        return -1;
    } 
 
    struct bj_error* error = 0;
    struct bj_tcp_listener* listener = bj_listen_tcp(0, 8081, 0, 0, &error);
    if(!listener) {
        bj_err("client: bind failed (%s)", bj_error_message(error));
        bj_clear_error(&error);
        return 1;
    }
    bj_info("server: listening on port %d", bj_tcp_listener_port(listener));
 
    bj_info("server: waiting for client...");
    struct bj_tcp_stream* stream = bj_accept_tcp(listener, UINT32_MAX, &error);
    if(stream) {
        bj_info("server: client connected");
 
        char name[256];
        int n = bj_tcp_recv(stream, name, sizeof(name) - 1);
        if(n > 0) {
            name[n] = '\0';
            bj_info("server: received name: %s", name);
 
            char response[512];
            int len = snprintf(response, sizeof(response), "Hello %s", name);
            bj_tcp_send(stream, response, len);
            bj_info("server: sent greeting");
        }
 
        bj_close_tcp_stream(stream);
        bj_info("server: connection closed");
    }
 
    bj_close_tcp_listener(listener);
 
    bj_end();
 
    return 0;
}