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The end of the header section is indicated by an empty field line, resulting in the transmission of two consecutive CR-LF pairs. In the past, long lines could be folded into multiple lines; continuation lines are indicated by the presence of a space (SP) or horizontal tab (HT) as the first character on the next line.
In addition to aspects of server-driven content negotiation by content type and by language specified in RFC 7231, there are extensions defining other aspects of content negotiation, such as Memento which describes use of a Accept-Datetime header to retrieve version of a resource's representation at particular points in time [1] and the IETF/W3C's Content Negotiation by Profile [2] which ...
This is a list of the IP protocol numbers found in the field Protocol of the IPv4 header and the Next Header field of the IPv6 header. It is an identifier for the encapsulated protocol and determines the layout of the data that immediately follows the header. Both fields are eight bits wide.
Under HTTP 1.0, connections should always be closed by the server after sending the response. [1]Since at least late 1995, [2] developers of popular products (browsers, web servers, etc.) using HTTP/1.0, started to add an unofficial extension (to the protocol) named "keep-alive" in order to allow the reuse of a connection for multiple requests/responses.
Ethernet II MTU (1500) less PPPoE header (8); extensions exist DS-Lite over PPPoE 1452 Ethernet II MTU (1500) less PPPoE header (8) and IPv6 header (40) PPPoE jumbo frames 1493–9190 or more [13] Ethernet Jumbo Frame MTU (1501–9198) less PPPoE header (8) IEEE 802.11 Wi-Fi (WLAN) 2304 [14] The maximum MSDU size is 2304 before encryption.
Click the Security tab. 4. Deselect "Enable Protected Mode." 5. Restart Internet Explorer and sign in to AOL Mail again. ...
[9] start_response is a callable itself, taking two positional parameters, status and response_headers. Line 2 calls start_response, specifying "200 OK" as the HTTP status and a "Content-Type" response header. Line 3 makes the function into a generator. The body of the response is returned as an iterable of byte strings.
For example, in the IP suite, the contents of a web page are encapsulated with an HTTP header, then by a TCP header, an IP header, and, finally, by a frame header and trailer. The frame is forwarded to the destination node as a stream of bits , where it is decapsulated into the respective PDUs and interpreted at each layer by the receiving node.