network protocol testing

I. Analysis of the Three-way handshake protocol First, let's look at one of the most common things in our life: During our online shopping, we often chat with customer service like this: We asked Customer Service about something, Customer Service answered, and then we broke the network... After a while, we will log on again and receive a response from the customer service. This interaction process co

"Speed test" can be explained in many ways, in the Internet people's point of view is mainly concerned with the Internet access to network resources. To this end, there are a number of websites that also provide test scripts and services that test the speed of access from visitors to the site. This test method is very simple, but due to many factors, test results are generally only as a specific application to access this particular site (such as: HTT

; byte[] B =New byte[1024]; //Write InputStream content to Bytearrayoutputstream while((len= inputstream.read (b, 0, 1024))!=-1) {Bytearrayoutputstream.write (b,0, Len); } //Get Response ContentString responsestring =bytearrayoutputstream.tostring (); System.out.println (responsestring); //parse the XML data for the response. //....Inputstream.close (); Bytearrayoutputstream.close (); } /**http://schemas.xmlsoap.org/soap/envelope/"> http://server.w

){ - httppost.releaseconnection (); - } - if(httpclient!=NULL){ - httpclient.close (); - } in}Catch(IOException e) { - e.printstacktrace (); to } + } -}Three. Raw parameter delivery for the POST request:1 Public voidpost (string URL, string body) {2Closeablehttpclient httpClient =NULL;3HttpPost HttpPost =NULL;4 Try {5HttpClient =Httpclients.createdefault ();6Requestconfig requestconfig = Requestconfig.custom (). SetSocketTimeout (20000). Setco

We use the Internet every day, have you ever wondered how it is implemented?Billions of computers worldwide, connected together, 22 communication. Beijing, a piece of network card sent out the signal, Shenzhen, another card incredibly received, the two actually do not know each other's physical location, you do not think this is a very magical thing?in order to make the various computers can be interconnected, ARPANET specified a set of computer commu

Fluke network's distributed analyzer (OPV-WGA, hereinafter referred to as WGA) analyzes the distributed switching Environment Network with a new method, allowing users to view the entire layer-7 network in the most rapid and simple way as needed. WGA works with the network monitoring Console (NIS-OPV) and Protocol Anal

, switch to HTML page checkSingle-step request verification OK, we can build a test suite.Right-click on the request and select Add TestCaseEnter test suite nameEnter test Case nameClick OKWhen the request is added to the use case, we can set the assertionThe subsequent operation is the same as the webserver operationWe can set the parameterization, like the above soapui we can go to seleniumReprint to: http://mp.weixin.qq.com/s?__biz=MjM5OTI2MTQ3OA==mid=210125128idx=2sn= 326b730a969a5c268c3fac8

Session[sid:2, Target:iqn.2017-03.centos-i1:target1, portal:192.168.136.101,3260]Logout of [Sid:1, Target:iqn.2017-03.centos-i1:target1, portal:192.168.20.101,3260] successful.Logout of [Sid:2, Target:iqn.2017-03.centos-i1:target1, portal:192.168.136.101,3260] successful.# lsblk # Verify that the device is logout# iscsiadm-m Node-tiqn.2017-03.centos-i1:target1–l # re-login, the case here is a two-pathLogging in to [Iface:default, Target:iqn.2017-03.centos-i1:target1, portal:192.168.20.101,3260]

Layer-7 network protocol functions layer functions in the TCP/IP family OSI TCP/IP protocol family www.2cto.com Application Layer file transmission, email, file service, virtual terminal TFTP, HTTP, SNMP, FTP, SMTP, DNS, RIP, Telnet presentation layer data formatting, code conversion, data encryption no protocol Sessi

Network programming, and obtain protocol data by protocol name-Linux general technology-Linux technology and application information. The following is a detailed description. # Include # Include Int main () { Struct protent * pro; Pro = getprotobyname ("tcp "); Printf ("protocol name: % s \ n"

in order to provide services to the client, get the contents of the client, you can get the client object connected through the Accept method.3, you can communicate by getting the socket stream in the socket object and the specific client.4, if the communication is over, close the resource. Note: To close the client first, then close the server.Class tcpserver{public static void Main (string[] args) throws exception{ServerSocket ss = new ServerSocket (10002);//Socket Service set up for serverSo

Read Catalogue I. Operating System Fundamentals Two. Principles of network communication 2.1 The essence of the Internet is a series of network protocols 2.2 OSI layer Seven protocol 2.3 TCP/IP five-layer model explained 2.3.1 Physical Layer 2.3.2 Data Link Layer 2.3.3 Network Layer

This series of articles summarizes Linux network stacks, including:(1) Linux Network protocol Stack Summary(2) Network multipart offload technology Gso/tso/ufo/lro/gro in non-virtualized Linux environment(3) QEMU/KVM Network multipart offload technology in virtualized Linux

I. Internet ProtocolConnecting two computers to the Internet is actually a set of uniform standards, which are called Internet protocols, and the essence of the Internet is a series of network protocols. Second, why should have Internet ProtocolInternet Protocol is the equivalent of English in the computer world. Its features: a standard that defines how computers connect to the Internet, and computers that

This article mainly introduces the network protocol overview: the physical layer, the connection layer, the network layer, the transport layer, the application layer detailed, this article uses the postman and the Post office in the life to help to understand the complex network pr