RFC3261: SIP:26.2.3 HTTP认证

26.2.3 HTTP Authentication
26.2.3 HTTP认证

   SIP provides a challenge capability, based on HTTP authentication, that relies on the 401 and 407 response codes as well as header fields for carrying challenges and credentials.  Without significant modification, the reuse of the HTTP Digest authentication scheme in SIP allows for replay protection and one-way authentication.

SIP提供了基于HTTP认证的质询能力，该质询能力依赖于401和407响应代码以及用于携带质询和证书的报头字段。在没有重大修改的情况下，在SIP中重用HTTP摘要式身份验证方案可以实现重放保护和单向身份验证。

   The usage of Digest authentication in SIP is detailed in Section 22.

​第22节详细介绍了摘要式身份验证在SIP中的使用。