[zeromq-dev] Why router address is string, not integer?

[zebbey at gmail.com]

Hello,
I'm making a server program, which need to handle up to 10000 untrust client.
Usually, each client will send about 20 - 30 message per second.
When a message is coming, the server get the message's address, which is a string.
And the server want to know where the message come from. 
So, the server need do a string-hash operation.

I have not yet analyzed whether it have performance issues.
But I think, if the address is a integer, then the program will run faster.
So I'm wondering why the router address is a string, not integer?

Thank you !
--
Zeb