web protocols

The HTTP protocol defines eight methods or "actions" to indicate different ways of manipulating the resources specified by Request-uri, as described below:OPTIONS: Returns the HTTP request method that the server supports for a specific resource. You can also test the functionality of your server with a request to send a ' * ' to the Web server.HEAD: Ask the server for a response that is consistent with the GET request, except that the response body wi

Accept (*): text/html,image/*: Browser tells the server which data types are supportedMIME type: Large type/small typeFile type: JPG-image/jpgHTML file: HTML-text/htmlCSS files: css->-text/cssTXT file: txt-> Text/plain......View Tomcat/conf/web.xmlAccept-charset: iso-8859-1: Tell the server that the browser supports encodingaccept-encoding (*):Gzip,compress: Tell the Server Browser which Web page compression format is supportedCommon compression forma

BT Download:is file sharing, such as big Black Bull want to see the Black Cat movie, then the sky, Itsuki, passers-by will be their little black cat movie everyone share a little to see the big Black Cow, this is BT technology.650) this.width=650; "src=" http://os78f4hny.bkt.clouddn.com/20170719001.png "alt=" image "style=" border-style:none; Background-color:rgb (255,255,255); "/>Breakpoint Transfer:Is your file upload or download to 50%, you here suddenly power outage, and so you call you can

, such as our request method is: Get, host: localhost, port 8080, connection Status: Live, receive language: Chinese-English, cookile information, etc., this represents our requestHeaders, this will be sent to the browser. This is the message that the HTTP protocol organizes before request requests, from which we can explore the exact HTTP, which is more profound for us to understand the client-server model. Helps usFor the development of Web sites.V:

BT Download:is file sharing, such as big Black Bull want to see the Black Cat movie, then the sky, Itsuki, passers-by will be their little black cat movie everyone share a little to see the big Black Cow, this is BT technology.Breakpoint Transfer:Is your file upload or download to 50%, you here suddenly power outage, and so you call you can continue to start from 50% upload or download. Actions such as code:HTTP:Hypertext Transfer Protocol, a transport protocol based on TCP.HTTPS:Encrypted trans

There are three main ways to access a Web page using python: Urllib, Urllib2, HttplibUrllib simple, relatively weak function, Httplib simple and powerful, but does not support session1. The simplest page access (get the server-side response package)Res=urllib2.urlopen (URL)Print Res.read ()2. Plus the data to get or postdata={"name": "Hank", "passwd": "HJZ"}Urllib2.urlopen (URL, urllib.urlencode (data))3. Add the HTTP headerheader={"user-agent": "mozi

Network Layer 2 (IPv4 and IPv6 addresses and related protocols) IP (internet protocol) protocol is the core protocol of the TCP/IP protocol family and the network layer of the internet. The current version number is 4, also known as IPv4. The next generation IP protocol version number is 6, that is, IPv6. As described in the network layer function, the IP layer provides the selection and forwarding functions for the Internet. Hosts connected to the In

Network basics of basic computer series-network protocols and basic computer networks What's the network protocol A computer with hardware, operating systems, and software already has functions that can be used. However, to realize communication between a computer and a computer, a series of standards must be followed.Internet Protocol. The function of Internet protocol is to define how computers access the Internet and how computers connect to the In

TPC/IP protocol is a Transport layer protocol, which mainly solves how data is transmitted in the network, and HTTP is the application layer protocol, which mainly solves how to wrap the data.Regarding the relationship between TCP/IP and HTTP protocol, the network has a relatively easy to understand introduction:"When we transmit data, we can only use the (Transport Layer) TCP/IP protocol, but in that case, if there is no application layer, the data content is not recognized and if you want to m

protocol and specification is the most basic, you understand that after the advent of new technologies, you will find déjà vu. can extrapolate, achieve their own open agreement, the internet era, Li style= "List-style-type:square" >1 and other citizens are people who establish norms and agreements 2 and other citizens are the people who provide services 3 and other citizens are people who develop software 4 and other citizens are people who sell hardware

context, the Internet of Things and M2M technology came into being. Although it is easy for people to connect to the Internet, it is difficult to access the Internet for those micro devices. In a world that is currently made up of PCs, information exchange is implemented via TCP and Application layer protocol HTTP. But for small devices, implementing TCP and HTTP protocols is clearly an excessive requirement. The COAP protocol was designed to allow s

IPV6 has been clamoring for years, but the General Service is mainly IPV4, although many applications or Web servers have provided IPV6 access, but it is estimated that the distance is much longer. Compile nginx must compile:--with-ipv6, otherwise cannot use!! 1: Simultaneously listens to the Ipv4+ipv6 80 ports server {Listen [::]:80;}2: Monitor the Ipv4+ipv6 80 ports separately server {Listen 80;Listen [::]:80 Ipv6only=on;}3: Monitor only the IPV6

backbone network, people connected to it through the IPIP (IP Encapsulation IP) tunnel. The Unix program mrouted can understand the DVMRP and IGMP protocols, but the Internet Router cannot. Many customers who want to adopt Multicast technology are still asking their ISP why some protocols do not work. DVMRP refers to the distance vector multicast routing protocol. It uses IGMP subcode 13 and implements the

architecture 2. Switch application processing to Open Systems (Windows and Unix) 3. IP addresses are widely used as interconnection protocols None of these trends is surprising. Using the IP protocol, Intel-compatible open-system servers have dominated modern data centers. Given this dominant processing architecture, Ethernet Interconnection is a logical choice, and no other network protocols can occupy su

When Adobe, Microsoft, sun and other giants began to show their favor for "Open Source", the era of "open source" is approaching! Originally from: sinoprise.com/read.php? Tid-662-page-e-fpage-1.html (unfortunately this link has not been opened), I basically did not change, just some typographical and finishing.References: http://www.fsf.org/licensing/licenses/ There are many open-source protocols today, and there are currently 58 open-source

Link: http://www.awflasher.com/blog/archives/939 When Adobe, Microsoft, sun and other giants began to show their favor for "Open Source", the era of "open source" is approaching! Originally from: sinoprise.com/read.php? Tid-662-page-e-fpage-1.html (unfortunately this link has not been opened), I basically did not change, just some typographical and finishing.References: http://www.fsf.org/licensing/licenses/ There are many open-source protocols today

VPN protocols: PPTP, L2TP, and OpenVPN1. Concepts of PPTP, L2TP, and OpenVPN Tunneling Protocols 1. Default port number of PPTP (Point to Point Tunneling Protocol): 1723 PPTP, or PPTF Protocol. This protocol is a new enhanced security protocol developed on the basis of the PPP protocol. It supports multi-protocol Virtual Private Network (VPN) and can pass the password authentication protocol (PAP) and Exten