Aravis Port Knock

aravis_port_knock.patch

diff --git a/src/arvgvstream.c b/src/arvgvstream.c
index 4dde0b2..ae032c7 100644
--- a/src/arvgvstream.c
+++ b/src/arvgvstream.c
@@ -41,12 +41,12 @@
 #include <stdio.h>
 #include <errno.h>
 #include <arvwakeupprivate.h>
+#include <netinet/in.h>
 
 #ifdef ARAVIS_BUILD_PACKET_SOCKET
 #include <ifaddrs.h>
 #include <net/if.h>
-#include <netinet/in.h>
 #include <linux/if_packet.h>
 #include <linux/if_ether.h>
 #include <linux/ip.h>
@@ -730,6 +730,17 @@ _loop (ArvGvStreamThreadData *thread_data)
 
 	arv_debug_stream ("[GvStream::loop] Standard socket method");
 
+    // tell the (potential) router to open up the port for the stream data
+
+    struct sockaddr_in dest_addr = {};
+    dest_addr.sin_family = AF_INET;
+    const guint8 *bytes = g_inet_address_to_bytes (thread_data->device_address);
+    dest_addr.sin_addr.s_addr = (*((guint32 *) bytes));
+    dest_addr.sin_port = htons(3957);
+    sendto( g_socket_get_fd (thread_data->socket), "bla", 4, 0, &dest_addr, sizeof(dest_addr));
+
+    // end port request
+
 	poll_fd[0].fd = g_socket_get_fd (thread_data->socket);
 	poll_fd[0].events =  G_IO_IN;
 	poll_fd[0].revents = 0;