Enabling SSL session reuse
An SSL session is started by a handshake procedure that involves multiple round trips (see the following figure). The client and server have to exchange four messages with a latency of around 50 milliseconds each. In total, we have at least 200 milliseconds of overhead while establishing a secure connection. In addition to that, both the client and the server need to perform public-key cryptographic operations in order to share a common secret. These operations are computationally expensive.
Normal SSL handshake
The client can request an abbreviated handshake in effect (see the following figure), saving a full round-trip ...
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