tox_new now sets error to TOX_ERR_NEW_PORT_ALLOC when binding to port fails.

auto_tests/messenger_test.c

@@ -337,7 +337,7 @@ int main(int argc, char *argv[])
     /* IPv6 status from global define */
     Messenger_Options options = {0};
     options.ipv6enabled = TOX_ENABLE_IPV6_DEFAULT;
-    m = new_messenger(&options);
+    m = new_messenger(&options, 0);
 
     /* setup a default friend and friendnum */
     if (m_addfriend_norequest(m, (uint8_t *)friend_id) < 0)

testing/Messenger_test.c

@@ -112,7 +112,7 @@ int main(int argc, char *argv[])
 
     Messenger_Options options = {0};
     options.ipv6enabled = ipv6enabled;
-    m = new_messenger(&options);
+    m = new_messenger(&options, 0);
 
     if ( !m ) {
         fputs("Failed to allocate messenger datastructure\n", stderr);

toxcore/Messenger.c

@@ -1593,24 +1593,34 @@ static void LANdiscovery(Messenger *m)
 }
 
 /* Run this at startup. */
-Messenger *new_messenger(Messenger_Options *options)
+Messenger *new_messenger(Messenger_Options *options, unsigned int *error)
 {
     Messenger *m = calloc(1, sizeof(Messenger));
 
+    if (error)
+        *error = MESSENGER_ERROR_OTHER;
+
     if ( ! m )
         return NULL;
 
+    unsigned int net_err = 0;
+
     if (options->udp_disabled) {
         /* this is the easiest way to completely disable UDP without changing too much code. */
         m->net = calloc(1, sizeof(Networking_Core));
     } else {
         IP ip;
         ip_init(&ip, options->ipv6enabled);
-        m->net = new_networking_ex(ip, options->port_range[0], options->port_range[1]);
+        m->net = new_networking_ex(ip, options->port_range[0], options->port_range[1], &net_err);
     }
 
     if (m->net == NULL) {
         free(m);
+
+        if (error && net_err == 1) {
+            *error = MESSENGER_ERROR_PORT;
+        }
+
         return NULL;
     }
 
@@ -1654,6 +1664,9 @@ Messenger *new_messenger(Messenger_Options *options)
     set_nospam(&(m->fr), random_int());
     set_filter_function(&(m->fr), &friend_already_added, m);
 
+    if (error)
+        *error = MESSENGER_ERROR_NONE;
+
     return m;
 }
 

toxcore/Messenger.h

@@ -711,11 +711,20 @@ void custom_lossless_packet_registerhandler(Messenger *m, void (*packet_handler_
 int send_custom_lossless_packet(const Messenger *m, int32_t friendnumber, const uint8_t *data, uint32_t length);
 
 /**********************************************/
+
+enum {
+    MESSENGER_ERROR_NONE,
+    MESSENGER_ERROR_PORT,
+    MESSENGER_ERROR_OTHER
+};
+
 /* Run this at startup.
  *  return allocated instance of Messenger on success.
  *  return 0 if there are problems.
+ *
+ *  if error is not NULL it will be set to one of the values in the enum above.
  */
-Messenger *new_messenger(Messenger_Options *options);
+Messenger *new_messenger(Messenger_Options *options, unsigned int *error);
 
 /* Run this before closing shop
  * Free all datastructures.

toxcore/network.c

@@ -471,7 +471,7 @@ static void at_shutdown(void)
  */
 Networking_Core *new_networking(IP ip, uint16_t port)
 {
-    return new_networking_ex(ip, port, port + (TOX_PORTRANGE_TO - TOX_PORTRANGE_FROM));
+    return new_networking_ex(ip, port, port + (TOX_PORTRANGE_TO - TOX_PORTRANGE_FROM), 0);
 }
 
 /* Initialize networking.
@@ -481,8 +481,10 @@ Networking_Core *new_networking(IP ip, uint16_t port)
  *
  *  return Networking_Core object if no problems
  *  return NULL if there are problems.
+ *
+ * If error is non NULL it is set to 0 if no issues, 1 if bind failed, 2 if other.
  */
-Networking_Core *new_networking_ex(IP ip, uint16_t port_from, uint16_t port_to)
+Networking_Core *new_networking_ex(IP ip, uint16_t port_from, uint16_t port_to, unsigned int *error)
 {
     /* If both from and to are 0, use default port range
      * If one is 0 and the other is non-0, use the non-0 value as only port
@@ -501,6 +503,9 @@ Networking_Core *new_networking_ex(IP ip, uint16_t port_from, uint16_t port_to)
         port_to = temp;
     }
 
+    if (error)
+        *error = 2;
+
     /* maybe check for invalid IPs like 224+.x.y.z? if there is any IP set ever */
     if (ip.family != AF_INET && ip.family != AF_INET6) {
 #ifdef DEBUG
@@ -643,6 +648,9 @@ Networking_Core *new_networking_ex(IP ip, uint16_t port_from, uint16_t port_to)
             if (tries > 0)
                 errno = 0;
 
+            if (error)
+                *error = 0;
+
             return temp;
         }
 
@@ -658,6 +666,10 @@ Networking_Core *new_networking_ex(IP ip, uint16_t port_from, uint16_t port_to)
                  ip_ntoa(&ip), port_from, port_to);
 
     kill_networking(temp);
+
+    if (error)
+        *error = 1;
+
     return NULL;
 }
 

toxcore/network.h

@@ -362,9 +362,11 @@ void networking_poll(Networking_Core *net);
  *
  * return Networking_Core object if no problems
  * return NULL if there are problems.
+ *
+ * If error is non NULL it is set to 0 if no issues, 1 if bind failed, 2 if other.
  */
 Networking_Core *new_networking(IP ip, uint16_t port);
-Networking_Core *new_networking_ex(IP ip, uint16_t port_from, uint16_t port_to);
+Networking_Core *new_networking_ex(IP ip, uint16_t port_from, uint16_t port_to, unsigned int *error);
 
 /* Function to cleanup networking stuff (doesn't do much right now). */
 void kill_networking(Networking_Core *net);

toxcore/tox.c

@@ -154,13 +154,18 @@ Tox *tox_new(const struct Tox_Options *options, const uint8_t *data, size_t leng
         }
     }
 
-    Messenger *m = new_messenger(&m_options);
+    unsigned int m_error;
-    //TODO: TOX_ERR_NEW_MALLOC
+    Messenger *m = new_messenger(&m_options, &m_error);
-    //TODO: TOX_ERR_NEW_PORT_ALLOC
 
     if (!new_groupchats(m)) {
         kill_messenger(m);
+
+        if (m_error == MESSENGER_ERROR_PORT) {
+            SET_ERROR_PARAMETER(error, TOX_ERR_NEW_PORT_ALLOC);
+        } else {
             SET_ERROR_PARAMETER(error, TOX_ERR_NEW_MALLOC);
+        }
+
         return NULL;
     }