- #1 Connection type or permission problems

Server is configured to connect with PSK to agent but agent accepts only unencrypted connections

In server or proxy log (with mbed TLS (PolarSSL) 1.3.11)

Get value from agent failed: ssl_handshake(): SSL - The connection indicated an EOF

In server or proxy log (with GnuTLS 3.3.16)

Get value from agent failed: zbx_tls_connect(): gnutls_handshake() failed: \
    -110 The TLS connection was non-properly terminated.

In server or proxy log (with OpenSSL 1.0.2c)

Get value from agent failed: TCP connection successful, cannot establish TLS to [[127.0.0.1]:10050]: \
    Connection closed by peer. Check allowed connection types and access rights

One side connects with certificate but other side accepts only PSK or vice versa

In any log (with mbed TLS (PolarSSL)):

failed to accept an incoming connection: from 127.0.0.1: ssl_handshake():\
    SSL - The server has no ciphersuites in common with the client

In any log (with GnuTLS):

failed to accept an incoming connection: from 127.0.0.1: zbx_tls_accept(): gnutls_handshake() failed:\
    -21 Could not negotiate a supported cipher suite.

In any log (with OpenSSL 1.0.2c):

failed to accept an incoming connection: from 127.0.0.1: TLS handshake returned error code 1:\
    file .\ssl\s3_srvr.c line 1411: error:1408A0C1:SSL routines:ssl3_get_client_hello:no shared cipher:\
    TLS write fatal alert "handshake failure"