Port the blackbox meta-connections test using network namespaces.

[meshlink] / test / meta-connections.c

diff --git a/test/meta-connections.c b/test/meta-connections.c
new file mode 100644 (file)
index 0000000..22d7c21
--- /dev/null
+++ b/test/meta-connections.c
@@ -0,0 +1,89 @@
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "meshlink.h"
+#include "devtools.h"
+#include "netns_utils.h"
+#include "utils.h"
+
+static struct sync_flag peer_reachable;
+static struct sync_flag peer_unreachable;
+
+static void nut_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
+       (void)mesh;
+
+       if(!strcmp(node->name, "peer")) {
+               set_sync_flag(reachable ? &peer_reachable : &peer_unreachable, true);
+       }
+}
+
+int main(void) {
+       meshlink_set_log_cb(NULL, MESHLINK_DEBUG, log_cb);
+
+       init_sync_flag(&peer_reachable);
+       init_sync_flag(&peer_unreachable);
+
+       // Set up relay, peer and NUT
+       peer_config_t *peers = setup_relay_peer_nut("metaconn");
+
+       // Wait for peer to connect to NUT
+       devtool_set_meta_status_cb(peers[2].mesh, nut_status_cb);
+
+       for(int i = 0; i < 3; i++) {
+               assert(meshlink_start(peers[i].mesh));
+       }
+
+       assert(wait_sync_flag(&peer_reachable, 5));
+
+       // Test case #1: re-connection to peer after disconnection when connected to the relay node
+
+       // Stop the peer and wait for it to become unreachable
+       reset_sync_flag(&peer_unreachable);
+       meshlink_stop(peers[1].mesh);
+       assert(wait_sync_flag(&peer_unreachable, 5));
+
+       // Restart the peer and wait for it to become reachable
+       reset_sync_flag(&peer_reachable);
+       assert(meshlink_start(peers[1].mesh));
+       assert(wait_sync_flag(&peer_reachable, 5));
+
+       // Test case #2: re-connection to peer after changing peer and NUT's IP address simultaneously,
+       //               while connected to the relay
+
+       reset_sync_flag(&peer_reachable);
+       reset_sync_flag(&peer_unreachable);
+
+       for(int i = 1; i < 3; i++) {
+               change_peer_ip(&peers[i]);
+       }
+
+       for(int i = 1; i < 3; i++) {
+               meshlink_reset_timers(peers[i].mesh);
+       }
+
+       assert(wait_sync_flag(&peer_unreachable, 75));
+       assert(wait_sync_flag(&peer_reachable, 15));
+
+       // Test case #3: re-connect to peer after stopping NUT and changing peer's IP address, no relay
+       reset_sync_flag(&peer_unreachable);
+
+       for(int i = 0; i < 2; i++) {
+               meshlink_stop(peers[i].mesh);
+       }
+
+       change_peer_ip(&peers[1]);
+       assert(wait_sync_flag(&peer_unreachable, 15));
+
+       reset_sync_flag(&peer_reachable);
+       assert(meshlink_start(peers[1].mesh));
+       assert(wait_sync_flag(&peer_reachable, 60));
+
+       // Done.
+
+       close_relay_peer_nut(peers);
+}