no they are case-insensitive as per RFC2616 4.2 Message Headers HTTP header fields, which include general-header (section 4.5), request-header (section 5.3), response-header (section 6.2), and entity-header (section 7.1) fields, follow the same generic format as that given in Section 3.1 of RFC 822 [9]. Each header field consists of a name followed by a colon … Read more
Nope, all it’s there for is to tell the browser which character set to decode your response with.
The accepted answer is very practical. Make sure you see it. But there are two foundational differences I will discuss in depth: Where header and parameters are placed in an HTTP Request A URL is different from an HTTP Message. An HTTP Message can either be a Request or a Response. In this answer I … Read more
The way the HTTP spec defines it, if the server knows how to support the Range header, it will. That in turn, requires it to return a 206 Partial Content response code with a Content-Range header, when it returns content to you. Otherwise, it will simply ignore the Range header in your request, and return … Read more
It is usually a good idea to use the headers for metadata and the body for the data that is used by the business logic. Some points to consider: 1) If the data is sent via HTTP instead of HTTPS, the proxy servers can modify the headers. 2) If you are using the REST protocol … Read more
See the HTTP 1.1 specification on what the Age header field is intended to be used for: The Age response-header field conveys the sender’s estimate of the amount of time since the response (or its revalidation) was generated at the origin server. This information is used by intermediate proxies to convey an estimate of how … Read more
TL;DR Some header names such as Authorization have special rules about caching as well as proxy & client handling; your custom header names would not get the special behavior unless you modified every single proxy & client. The point of using the common Authorization: <type> <value> header as defined in RFC7234 is mostly to ensure … Read more
Node version 12 depracated OutgoingMessage.prototype._headers, which is used in http-server. Issue is listed at: https://github.com/http-party/http-server/issues/537 https://nodejs.org/api/deprecations.html#deprecations_dep0066_outgoingmessage_prototype_headers_outgoingmessage_prototype_headernames Using node 12.0.0 I get the same error using http-server. Switching to 10.11.0 removes the error.
(Putting the full solution here so people who haven’t got as far as enabling the web inspector will see it.) First ensure that the Develop menu is enabled: in the Advanced pane in Safari Preferences (Cmd + ,) select “Show Develop menu in menu bar”. Then, from the Develop menu select Show Page Resources (Cmd … Read more
Try ETag: “4ae413bd”. The value of an ETag must follow the ABNF form: entity-tag = [ weak ] opaque-tag weak = “W/” opaque-tag = quoted-string quoted-string = ( <“> *(qdtext | quoted-pair ) <“> ) qdtext = <any TEXT except <“>> quoted-pair = “\” CHAR CHAR = <any US-ASCII character (octets 0 – 127)> TEXT … Read more