More robust connection algorithm

Stolen from uTox

1 files changed, 19 insertions, 0 deletions

diff --git a/main.c b/main.c
index 73ad1d0..2694ce4 100644
--- a/main.c
+++ b/main.c
@@ -494,6 +494,12 @@ int parse_lossless_packet(void *sender_uc, const uint8_t *data, uint32_t len)
         return -1;
     }
 
+        if(!data)
+        {
+                fprintf(stderr, "Got NULL pointer from toxcore - WTF?\n");
+                return -1;
+        }
+
     if(data[0] != PROTOCOL_MAGIC_HIGH || data[1] != PROTOCOL_MAGIC_LOW)
     {
         fprintf(stderr, "Received data frame with invalid protocol magic number 0x%x%x\n", data[0], data[1]);
@@ -836,6 +842,19 @@ int main(int argc, char *argv[])
     tox_options.proxy_enabled = 0;
 
     tox = tox_new(&tox_options);
+        if(tox == NULL)
+        {
+                fprintf(stderr, "tox_new() failed - trying without proxy\n");
+                if(!tox_options.proxy_enabled || (tox_options.proxy_enabled = 0, (tox = tox_new(&tox_options)) == NULL))
+                {
+                        fprintf(stderr, "tox_new() failed - trying without IPv6\n");
+                        if(!tox_options.ipv6enabled || (tox_options.ipv6enabled = 0, (tox = tox_new(&tox_options)) == NULL))
+                        {
+                                fprintf(stderr, "tox_new() failed - exiting\n");
+                                exit(1);
+                        }
+                }
+        }
 
     set_tox_username(tox);