Move accept_connections() to osd_messenger_t, add a simple uring OSD stub

osd.cpp

@@ -265,7 +265,7 @@ restart:
     {
         if (events[i].data.fd == listen_fd)
         {
-            accept_connections();
+            c_cli.accept_connections(listen_fd);
         }
         else
         {
@@ -279,42 +279,6 @@ restart:
     }
 }
 
-void osd_t::accept_connections()
-{
-    // Accept new connections
-    sockaddr_in addr;
-    socklen_t peer_addr_size = sizeof(addr);
-    int peer_fd;
-    while ((peer_fd = accept(listen_fd, (sockaddr*)&addr, &peer_addr_size)) >= 0)
-    {
-        assert(peer_fd != 0);
-        char peer_str[256];
-        printf("[OSD %lu] new client %d: connection from %s port %d\n", this->osd_num, peer_fd,
-            inet_ntop(AF_INET, &addr.sin_addr, peer_str, 256), ntohs(addr.sin_port));
-        fcntl(peer_fd, F_SETFL, fcntl(listen_fd, F_GETFL, 0) | O_NONBLOCK);
-        int one = 1;
-        setsockopt(peer_fd, SOL_TCP, TCP_NODELAY, &one, sizeof(one));
-        c_cli.clients[peer_fd] = {
-            .peer_addr = addr,
-            .peer_port = ntohs(addr.sin_port),
-            .peer_fd = peer_fd,
-            .peer_state = PEER_CONNECTED,
-            .in_buf = malloc(c_cli.receive_buffer_size),
-        };
-        // Add FD to epoll
-        set_fd_handler(peer_fd, [this](int peer_fd, int epoll_events)
-        {
-            c_cli.handle_peer_epoll(peer_fd, epoll_events);
-        });
-        // Try to accept next connection
-        peer_addr_size = sizeof(addr);
-    }
-    if (peer_fd == -1 && errno != EAGAIN)
-    {
-        throw std::runtime_error(std::string("accept: ") + strerror(errno));
-    }
-}
-
 void osd_t::exec_op(osd_op_t *cur_op)
 {
     clock_gettime(CLOCK_REALTIME, &cur_op->tv_begin);