Function moq_versions 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn moq_versions(
    dst: *mut moq_string,
    count: usize,
) -> i32

List the protocol versions offered during the handshake by default.

Writes up to count names into dst and returns the total number available, which may be larger than count. Pass a NULL dst with a zero count to size the array first. Each name borrows a static string valid for the life of the process, so a caller building a menu can hold them indefinitely.

Work-in-progress versions are omitted, since they are not advertised unless pinned; moq_client_set_versions still accepts them by name.

Returns the total count on success, or a negative code on failure.

Safety

• The caller must ensure that dst is either NULL with a zero count, or a valid pointer to count writable moq_string values.