Update UTCP to correctly handle timeouts sending data.

[meshlink] / test / channels-failure.c

diff --git a/test/channels-failure.c b/test/channels-failure.c
new file mode 100644 (file)
index 0000000..db88896
--- /dev/null
+++ b/test/channels-failure.c
@@ -0,0 +1,152 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <assert.h>
+
+#include "../src/meshlink.h"
+#include "utils.h"
+
+static void log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, const char *text) {
+       static struct timeval tv0;
+       struct timeval tv;
+
+       if(tv0.tv_sec == 0) {
+               gettimeofday(&tv0, NULL);
+       }
+
+       gettimeofday(&tv, NULL);
+       fprintf(stderr, "%u.%.03u ", (unsigned int)(tv.tv_sec - tv0.tv_sec), (unsigned int)tv.tv_usec / 1000);
+
+       if(mesh) {
+               fprintf(stderr, "(%s) ", mesh->name);
+       }
+
+       fprintf(stderr, "[%d] %s\n", level, text);
+}
+
+static bool accept_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
+       (void)mesh;
+       (void)channel;
+       (void)port;
+       (void)data;
+       (void)len;
+
+       return true;
+}
+
+static struct sync_flag poll_flag;
+static size_t poll_len;
+
+static void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
+       meshlink_set_channel_poll_cb(mesh, channel, NULL);
+       poll_len = len;
+       set_sync_flag(&poll_flag, true);
+}
+
+static struct sync_flag receive_flag;
+static size_t receive_len;
+
+static void receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
+       (void)mesh;
+       (void)channel;
+       (void)data;
+
+       receive_len = len;
+       set_sync_flag(&receive_flag, true);
+}
+
+int main() {
+       meshlink_set_log_cb(NULL, MESHLINK_DEBUG, log_cb);
+
+       // Open three meshlink instances.
+
+       meshlink_handle_t *mesh1 = meshlink_open("channels_failure_conf.1", "foo", "channels", DEV_CLASS_BACKBONE);
+       meshlink_handle_t *mesh2 = meshlink_open("channels_failure_conf.2", "bar", "channels", DEV_CLASS_BACKBONE);
+
+       assert(mesh1);
+       assert(mesh2);
+
+       meshlink_enable_discovery(mesh1, false);
+       meshlink_enable_discovery(mesh2, false);
+
+       meshlink_set_log_cb(mesh1, MESHLINK_DEBUG, log_cb);
+       meshlink_set_log_cb(mesh2, MESHLINK_DEBUG, log_cb);
+
+       // Import and export both side's data
+
+       meshlink_add_address(mesh1, "localhost");
+       meshlink_add_address(mesh2, "localhost");
+
+       char *data1 = meshlink_export(mesh1);
+       char *data2 = meshlink_export(mesh2);
+
+       assert(data1);
+       assert(data2);
+
+       assert(meshlink_import(mesh1, data2));
+       assert(meshlink_import(mesh2, data1));
+
+       free(data1);
+       free(data2);
+
+       // Set the callbacks.
+
+       meshlink_set_channel_accept_cb(mesh2, accept_cb);
+
+       // Open a channel from foo to bar
+
+       meshlink_node_t *bar = meshlink_get_node(mesh1, "bar");
+       assert(bar);
+
+       meshlink_channel_t *channel = meshlink_channel_open(mesh1, bar, 7, receive_cb, NULL, 0);
+       assert(channel);
+
+       meshlink_set_channel_poll_cb(mesh1, channel, poll_cb);
+
+       // Start both instances
+
+       assert(meshlink_start(mesh1));
+       assert(meshlink_start(mesh2));
+
+       // Wait for the channel to be established
+
+       assert(wait_sync_flag(&poll_flag, 10));
+       assert(poll_len != 0);
+
+       sleep(1);
+
+       // Stop mesh2, then try to send data to it. We should get a notification that the channel has closed after a while.
+
+       assert(!check_sync_flag(&receive_flag));
+
+       meshlink_stop(mesh2);
+
+       assert(meshlink_channel_send(mesh1, channel, "hello", 5) == 5);
+
+       assert(wait_sync_flag(&receive_flag, 70));
+       assert(receive_len == 0);
+
+       meshlink_channel_close(mesh1, channel);
+
+       // Try setting up a new channel while bar is still down.
+
+       poll_flag.flag = false;
+       receive_flag.flag = false;
+
+       channel = meshlink_channel_open(mesh1, bar, 7, NULL, NULL, 0);
+       assert(channel);
+
+       meshlink_set_channel_poll_cb(mesh1, channel, poll_cb);
+
+       assert(wait_sync_flag(&poll_flag, 70));
+       assert(poll_len == 0);
+
+       // Clean up.
+
+       meshlink_close(mesh1);
+       meshlink_close(mesh2);
+
+       return 0;
+}