Function switch_channel_get_variable_strdup

pub unsafe extern "C" fn switch_channel_get_variable_strdup(
    channel: *mut switch_channel_t,
    varname: *const c_char,
) -> *const c_char

\brief Retrieve a copy of a variable from a given channel. switch_safe_free() call will be required. \param channel channel to retrieve variable from \param varname the name of the variable \return a strdup copy the value of the requested variable without using a memory pool.