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Secures an open socket.

Built-in Message handler[]


secure socket <socket> [with verification [for host <verificationHostName>]]


secure socket ""
open socket to ""
write "unencrypted message" to socket ""
secure socket ""
write "encrypted message" to socket ""
secure socket mySocket with verification for host ""

Use the secure socket command to secure an open socket.

If 'with verification' is specified, when connecting to a remote peer, the client verifies the peers certificate during the handshake process. The sslCertificates property can be used to specify a list of certificates to verify against. In addition you can place system wide certificates in System/Library/OpenSSL/certs. If a verificationhostname is specified, the socket will be verified against that verificationhostname. An example of this is when you want to create a secure connection with a host while tunnelling through a proxy. Specifying the final host allows LiveCode to verify the socket against that host, rather than the proxy server.

If 'without verification' is specified then peers credentials are not authenticated, and any connection is accepted.

Once secured:

  • All pending and future reads from the socket will be assumed to be
  • All pending writes will complete unencrypted. All future writes will
 be encrypted.

If the socket fails secure, a socketError message is sent to the object that opened the socket (not the object that attempted to secure it).

The secure socket command is part of the 

SSL & Encryption library. To ensure that the command works in a standalone application, you must include this custom library when you create your standalone. In the Inclusions pane of the Standalone Application Settings window, make sure the "SSL & Encryption" library checkbox is checked.


  • socket: A reference to an open socket.
  • verificationHostName: The IP address or domain name of the host you want to verify against.

See also: SSL & Encryption library (library),socketError message (message),socketError (message),sslCertificates property (property),sslCertificates (property),