[1] RFC 5246 - The Transport Layer Security (TLS) Protocol Version 1.2 ( 版) http://tools.ietf.org/html/rfc5246#page-81

server

The server is the application entity that responds to requests for

connections from clients. See also "client".

[2] RFC 6125 - Representation and Verification of Domain-Based Application Service Identity within Internet Public Key Infrastructure Using X.509 (PKIX) Certificates in the Context of Transport Layer Security (TLS) ( 版) https://tools.ietf.org/html/rfc6125#section-1.8

TLS server: An entity that assumes the role of a server in a

Transport Layer Security [TLS] negotiation; in this specification

we assume that the TLS server is an application service.