Symmetrical bi-directional communication
Network nodes engage in an asymmetric transactional session. The nodes negotiate transactional role reversal and further communication under a reversed asymmetric transactional session.
1. A method of communication between a first private node and a second private node, said method comprising:
said first private node obtaining a first address in a first private address space;
said second private node obtaining a second address in a second private address space;
said first private node contacting a public node and establishing a first asymmetric transactional session therewith, said session being uniquely identifiable, said first asymmetric transactional session being supported by a first network connection;
said first private node adopting a server role relative to said first network connection;
said public node adopting a client role relative to said first network connection;
said second private node contacting said public node and establishing a second asymmetric transactional session therewith, said session being uniquely identifiable, said second asymmetric transactional session being supported by a second network connection;
said second private node adopting a server role relative to said second network connection;
said public node adopting a client role relative to said second network connection; and
said public node relaying communication between said first node and said second node.
2. A method according to claim 1 , further comprising: said first private node establishing a third asymmetric transactional session, said session being uniquely identifiable, with said public node and said second private node establishing a fourth asymmetric transactional session with said public node, said session being uniquely identifiable.
3. A method according to claim 2 , wherein said third asymmetric transactional session is supported by a third network connection and said fourth asymmetric transactional session is supported by a fourth network connection.
4. A method according to claim 3 , wherein said first, second, third, and fourth asymmetric transactional sessions comprise HTTP sessions.
5. A method according to claim 1 , wherein said first and second network connections comprise TCP network connections.
6. A method according to claim 5 , wherein said first and second network connections comprise tunneled network connections.
7. A method according to claim 6 , wherein said tunneled connections comprise secure socket layer connections.
8. An apparatus for communication between a first private node and a second private node, said apparatus comprising:
at least one processor; and
memory to carry out the steps of:
said first private node obtaining a first address in a first private address space;
said second private node obtaining a second address in a second private address space;
said first private node contacting a public node and establishing a first asymmetric transactional session therewith, said session being uniquely identifiable, said first asymmetric transactional session being supported by a first network connection;
said first private node adopting a server role relative to said first network connection;
said public node adopting a client role relative to said first network connection;
said second private node contacting said public node and establishing a second asymmetric transactional session therewith, said session being uniquely identifiable, said second asymmetric transactional session being supported by a second network connection;
said second private node adopting a server role relative to said second network connection;
said public node adopting a client role relative to said second network connection; and
said public node relaying communication between said first node and said second node.
9. An apparatus according to claim 8 , wherein said memory further carries out the steps of: said first private node establishing a third asymmetric transactional session, said session being uniquely identifiable, with said public node and said second private node establishing a fourth asymmetric transactional session with said public node, said session being uniquely identifiable.
10. An apparatus according to claim 9 , wherein said third asymmetric transactional session is supported by a third network connection and said fourth asymmetric transactional session is supported by a fourth network connection.
11. An apparatus according to claim 10 , wherein said first, second, third, and fourth asymmetric transactional sessions comprise HTTP sessions.
12. An apparatus according to claim 8 , wherein said first and second network connections comprise TCP network connections.
13. An apparatus according to claim 12 , wherein said first and second network connections comprise tunneled network connections.
14. An apparatus according to claim 13 , wherein said tunneled connections comprise secure socket layer connections.