Update UTCP to support fragmenting packets on UDP style channels.

[meshlink] / test / channels-udp.c

diff --git a/test/channels-udp.c b/test/channels-udp.c
index 27265aac420328c9a9d11107f75126b85d7d339f..0c24a9376e04f979fb80921154e1e7169f6ac863 100644 (file)
--- a/test/channels-udp.c
+++ b/test/channels-udp.c
@@ -20,6 +20,7 @@ struct client {
        meshlink_handle_t *mesh;
        meshlink_channel_t *channel;
        size_t received;
+       bool got_large_packet;
 };
 
 static void server_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
@@ -52,10 +53,14 @@ static void client_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *chann
        (void)data;
 
        // We expect always the same amount of data from the server.
-       assert(len == 1000);
        assert(mesh->priv);
        struct client *client = mesh->priv;
+       assert(len == 512 || len == 2000);
        client->received += len;
+
+       if(len == 2000) {
+               client->got_large_packet = true;
+       }
 }
 
 static void status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
@@ -135,9 +140,21 @@ int main() {
                assert(clients[i].channel);
        }
 
+       // Send a packet larger than the MTU
+
+       char large_data[2000] = "";
+
+       for(int i = 0; i < 3; i++) {
+               assert(meshlink_channel_send(server, channels[i], large_data, sizeof(large_data)) == sizeof(large_data));
+       }
+
+       // Assert that packets larger than 64 kiB are not allowed
+
+       assert(meshlink_channel_send(server, channels[0], large_data, 65537) == -1);
+
        // Stream packets from server to clients for 5 seconds at 40 Mbps (1 kB * 500 Hz)
 
-       char data[1000];
+       char data[512];
        memset(data, 'U', sizeof(data));
 
        for(int j = 0; j < 2500; j++) {
@@ -165,8 +182,9 @@ int main() {
        }
 
        for(int i = 0; i < 3; i++) {
-               assert(clients[i].received >= 2400000);
-               assert(clients[i].received <= 2500000);
+               assert(clients[i].received >= 1000000);
+               assert(clients[i].received <= 1282000);
+               assert(clients[i].got_large_packet);
        }
 
        // Clean up.