我正在尝试理解http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2。
HTTP/1.1 header field values can be folded onto multiple lines if the continuation line begins with a space or horizontal tab. All linear white space, including folding, has the same semantics as SP. A recipient MAY replace any linear white space with a single SP before interpreting the field value or forwarding the message downstream.
LWS = [CRLF] 1*( SP | HT )
我可以在没有放置任何标题值的情况下放置任意数量的<CR><LF><SP>
吗?
也就是说,这样是有效的:Header:<CR><LF><SP><CR><LF><SP>Value