Add rcvbuf size to socket

core-buffer/src/UdpReceiver.cpp

@@ -59,6 +59,15 @@ void UdpReceiver::bind(const uint16_t port, const size_t usec_timeout)
             SO_RCVTIMEO,
             (const char*)&udp_socket_timeout,
             sizeof(struct timeval));
+
+    // 12MB
+    int rcvbuf_n_bytes = 12 * 1024 * 1024;
+    setsockopt(
+            socket_fd_,
+            SOL_SOCKET,
+            SO_RCVBUF,
+            &rcvbuf_n_bytes,
+            sizeof(rcvbuf_n_bytes));
 }
 
 bool UdpReceiver::receive(void* buffer, size_t buffer_n_bytes)