mg_get_user_connection_data( conn );| Parameter | Type | Description | 
|---|---|---|
| conn | const struct mg_connection * | The connection for which to return the user data | 
| Type | Description |
| :--- | :--- |
|void *|A pointer to the user data, or NULL if no user data was registered with the connection|
The function mg_get_user_connection_data() returns the user data associated with a connection. This user data is represented with a pointer which has been previously registered with a call to mg_set_user_connection_data();. With this function it is possible to pass state information between callback functions referring to a specific connection.