P2P messages use null bytes as padding when the field size is larger than the content. For example, a command field is interpreted as 12 byte ASCII, so the version command is typically as follows:
version\0\0\0\0\0
My question is, is it also valid to have inner null bytes? eg:
ver\0sion\0\0\0\0
Some protocol applications I notice treat inner null bytes as valid, which seems mistaken.