This image illustrates DTLS handshake statuses and different messages during the DTLS handshake. The following steps are performed before the status of the handshake is determined:

• Create SSL/TLS SSLEngines
• Create Buffers
• Set Client of Server mode
• Begin Handshake
• Set Maximum Fragment Size

This image illustrates some of the possible handshake statuses. The section Understanding SSLEngine Operation Statuses describes these statuses in more detail:

• NEED_TASK
• NEED_WRAP
• NEED_UNWRAP
• NEED_UNWRAP_AGAIN
• FINISHED