http explained

This process is called content negotiation. { bidder: 'ix', params: { siteId: '195464', size: [120, 600] }}, The file-upload POST data is not URL-encoded (in the standard application/x-www-form-urlencoded), but uses a new MIME type of multipart/form-data. The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. Instead, it uses "Pragma: no-cache". {code: 'ad_leftslot', pubstack: { adUnitName: 'cdo_leftslot', adUnitPath: '/2863368/leftslot' }, mediaTypes: { banner: { sizes: [[120, 600], [160, 600]] } },

{code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } },

For example, the browser translated the URL http://www.nowhere123.com/doc/index.html into the following request message: When this request message reaches the server, the server can take either one of these actions: An example of the HTTP response message is as shown: The browser receives the response message, interprets the message and displays the contents of the message on the browser's window according to the media type of the response (as in the Content-Type response header). If-Modified-Since: date - Tell the server to send the page only if it has been modified after the specific date. The server processes the request and sends a response back after which client disconnect the connection. { bidder: 'sovrn', params: { tagid: '346693' }}, { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, { bidder: 'appnexus', params: { placementId: '11654157' }}, As mention earlier, HTTP support content negotiation between the client and the server. 'pa pdd chac-sb tc-bd bw hbr-20 hbss lpt-25' : 'hdn'">. }]

For Example: Suppose that the client requests for "index.html" and send an "Accept-Language: en-us". dfpSlots['houseslot_b'] = googletag.defineSlot('/2863368/houseslot', [], 'ad_houseslot_b').defineSizeMapping(mapping_houseslot_b).setTargeting('sri', '0').setTargeting('vp', 'btm').setTargeting('hp', 'center').setTargeting('ad_group', Adomik.randomAdGroup()).addService(googletag.pubads());

If the requested document is available, the server returns the document with a response status code "200 OK". If the server has encoded (or compressed) version of the document requested, it can return an encoded version supported by the client. The server can also choose to encode the document before returning to the client to reduce the transmission time. A client can use one of these request methods to send a request message to an HTTP server. Send an HTTP message: HTTP messages (before HTTP/2) are human-readable. To trigger a POST request, you can use an HTML form with attribute method="post" or write your own network program. The directive LanguagePriority can be used to specify the language preference in case of a tie during content negotiation or if the client does not express a preference. In an IP network, each machine is assigned an unique IP address (e.g., 165.1.2.3), and the IP software is responsible for routing a message from the source IP to the destination IP. Apache HTTP server is a popular industrial-strength production server, produced by Apache Software Foundation (ASF) @ www.apache.org.  ASF is an open-source software foundation.  That is to say, Apache HTTP server is free, with source code. Basically, HTTP is a TCP/IP based communication protocol, that is used to deliver data (HTML files, image files, query results, etc.) The old encoding type "application/x-www-form-urlencoded" is inefficient for sending binary data and non-ASCII characters. 'increment': 1, The HTTP protocol is also a stateless protocol meaning that the server isn’t required to store session information, and each request is independent of the other.- See this wiki This means: 1. HTTP messages, as defined in HTTP/1.1 and earlier, are human-readable. RFC 1867: "Form-based File upload in HTML", 1995, (obsoleted by RFC2854). A portion of these different asset allocations is explained by the liability structure, but another part remains unexplained. name: "pbjs-unifiedid", googletag.pubads().setCategoryExclusion('lcp').setCategoryExclusion('resp').setCategoryExclusion('wprod'); { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot_flex' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }},

} { bidder: 'ix', params: { siteId: '195451', size: [300, 250] }},

{ bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }},

enableSendAllBids: false, { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }},

The client may open a new connection, reuse an existing connection, or open several TCP connections to the servers.

{ bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, In HTTP/2, these messages are embedded into a binary structure, a frame, allowing optimizations like compression of headers and multiplexing.

POST method will be discussed later. { bidder: 'ix', params: { siteId: '555365', size: [160, 600] }}, This process is called content-type negotiation. The following shows a sample HTTP request message: The format of the HTTP response message is as follows: The first line is called the status line, followed by optional response header(s). { bidder: 'sovrn', params: { tagid: '346698' }}, The POST request takes the following syntax: Request headers Content-Type and Content-Length is necessary in the POST request to inform the server the media type and the length of the request body. The response header "Allow" tells the client the methods allowed.

Using GET request to send the query string has the following drawbacks: POST method overcomes these drawbacks. A special IP address 127.0.0.1 always refers to your own machine.  It's domian name is "localhost" and can be used for local loopback testing. { bidder: 'ix', params: { siteId: '195467', size: [300, 50] }}, TCP multiplexes applications within an IP machine. window.__tcfapi('addEventListener', 2, function(tcData, success) { HTTP (Hypertext Transfer Protocol) is perhaps the most popular application protocol used in the Internet (or The WEB). Sometimes, HEAD is not listed. Optionally, a body containing the fetched resource. The HTTP server interprets the request message, and returns you an appropriate response message, which is either the resource you requested or an error message.

{code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } },

An HTTP message consists of a message header and an optional message body, separated by a blank line, as illustrated below: The format of an HTTP request message is as follow: The first line of the header is called the request line, followed by optional request headers. var pbTabletSlots = [

The browser translates these directions in HTTP requests, and further interprets the HTTP responses to present the user with a clear response. It is the foundation of any data exchange on the Web and it is a client-server protocol, which means requests are initiated by the recipient, usually the Web browser. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }},

To present a Web page, the browser sends an original request to fetch the HTML document that represents the page. dfpSlots['houseslot_a'] = googletag.defineSlot('/2863368/houseslot', [300, 250], 'ad_houseslot_a').defineSizeMapping(mapping_houseslot_a).setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'right').setTargeting('ad_group', Adomik.randomAdGroup()).addService(googletag.pubads()); "I assure you that maman's doing it on purpose," Liza thought necessary to explain to Shatov. Introduced in HTTP/1.0, HTTP headers make this protocol easy to extend and experiment with. HTTP (Hypertext Transfer Protocol) is perhaps the most popular application protocol used in the Internet (or The WEB). type: "html5",

{code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, { bidder: 'appnexus', params: { placementId: '11654174' }}, The stabilization of the surface mode of oscillations can be explained as follows. RFC 2854: "The text/html media type", 2000. var dfpSlots = {}; In this example, the directory "htdocs\forbidden" is configured to deny all access in the Apache HTTP server configuration file "httpd.conf" as follows: HTTP/1.1 server supports so-called virtual hosts.

I see I shall have to explain this, although I had hoped to get right along with my story.

} When it is to be cooked in this way, prepare it in the manner just explained. DELETE: Ask the server to delete the data. var mapping_btmslot_a = googletag.sizeMapping().addSize([746, 0], [[300, 250], 'fluid']).addSize([0, 0], [[300, 250], [320, 50], [300, 50], 'fluid']).build();

{ bidder: 'openx', params: { unit: '541042770', delDomain: 'idm-d.openx.net' }}, { bidder: 'openx', params: { unit: '541042770', delDomain: 'idm-d.openx.net' }},

A HTTP server (such as Apache HTTP Server or Apache Tomcat Server) is needed to study the HTTP protocol.

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