Getting "AMQP cannot create socket" error

[jadhavshital]

https://github.com/akalend/amqpcpp/blob/master/examples/example_consume.cpp
Line no :- 37
123123:akalend@localhost:5672/private
From the above string I am assuming :-

Username : akalend
Password : 123123
Hosname : localhost
Port : 5672

What is private?
Is this my assumption correct?
Because my input string is admin:admin@localhost:5672/private and I am getting an error Server connection error 530.

Kindly help.