TCP is kind of the full feature kid on the block. You might do better making up a protocol that has what you want and skip on the rest. There are real latency

TCP is kind of the full feature kid on the block. You might do better making up a protocol that has what you want and skip on the rest. There are real latency costs for parts of TCP that a game will never use i.e. Nagle's algorithm(sure you can turn that one off but every thing has its cost and you can't turn off everything you don't need in TCP). I am surprised how infrequently RTP comes up in these conversations. Something close to RTP seems like it would be ideal for games.