[openssl-users] Getting SSL_ERROR_SYSCALL for an incoming DTLS Connection on an existing DTLS Connection on the same port

Vineet Kumar Srivastava svineet at kodiakptt.com
Fri Jul 15 07:43:13 UTC 2016


Hi,
  On an existing DTLS connection i.e. DTLS handshake already done successfully on port 5000 if server gets an incoming DTLS Connection i.e. DTLS Client Hello packet then SSL_read is generating SSL_ERROR_SYSCALL.
  Can anyone give me a clue as to why.
  Scenario is that Client had established a DTLS connection with server on port 5000 of server. IP address of client changes may be due to transition from Wi-Fi to 3G or vice-versa. So, now Client will again try to establish DTLS connection with server on same port 5000 of server.
  Please anyone let me know as to
Q1. why SSL_read is generating the error SSL_ERROR_SYSCALL and what can be done to proceed ?
Q2. Whether we can handle another incoming DTLS connection on an existing DTLS Connection on the same port without cleaning-up the already existing DTLS connection ?

Thanks in advance for the help,
Vineet Srivastava
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