TWSocketServer.IcsHosts

When originally designed TWSocketServer only supported listening on a single IP address and port, subsequently MultiListenSockets were added to listen on multiple IP addresses and ports, and TSslWSocketServer SSL support required a lot of extra code in the application to specify SSL certificates, protocols, ciphers and security using multiple SslContexts for multiple hosts.

The IcsHosts property is an alternate way for specifying multiple listeners for TSslWSocketServer that allows multiple hosts to be specified, each with one or two IP addresses and non-SSL and SSL port bindings, SSL certificates and private key (perhaps combined in a bundle), SSL context and security level, and other web server host related properties (used by higher level components). Each IcsHost has one or more HostNames to which it will recognise, that can share IP addresses.

If IcsHosts is specified, TSslWSocketServer ignores existing bindings and SSL context, and creates new bindings and initializes an SSL context for each host checking and reporting all server certificate chains. To ease implementation, functions are provided to read IcsHosts and TWSocketServer from an INI file, or they may be specified through IDE form properties and saved by other means.

Note IcsHosts is only available for TSslWSocketServer, not TWSocketServer, but you don't need to use SSL for any Hosts.