wireshark抓包实验之http(陕师大)

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1、1.IsyourbrowserrunningHTTPversion1.0or1.1?WhatversionofHTTPistheserverrunning?我的浏览器运行的HTTP版本是1.1服务器运行的HTTP版本是1.12.Whatlanguages(ifany)doesyourbrowserindicatethatitcanaccepttotheserver?我的浏览器能接受服务器的中文。3.WhatistheIPaddressofyourcomputer?Ofthegaia.cs.umass.eduserver?我的电脑的IP地址是192.168.139.

2、53；服务器gaia.cs.umass.edu的IP是128.119.245.12；4.Whatisthestatuscodereturnedfromtheservertoyourbrowser?状态码是2005.WhenwastheHTMLfilethatyouareretrievinglastmodifiedattheserver?最后修正的时间是：Sat,20Oct201215:22:01GMT6.Howmanybytesofcontentarebeingreturnedtoyourbrowser?482字节7.Byinspectingtherawdatai

3、nthepacketcontentwindow,doyouseeanyheaderswithinthedatathatarenotdisplayedinthepacket-listingwindow?Ifso,nameone.？8.InspectthecontentsofthefirstHTTPGETrequestfromyourbrowsertotheserver.Doyouseean“IF-MODIFIED-SINCE”lineintheHTTPGET?无，因为IE浏览器选择工具-Internet选项-删除文件，钩选“删除全部文件”从你的浏览器中移除缓存的文件

4、9.Inspectthecontentsoftheserverresponse.Didtheserverexplicitlyreturnthecontentsofthefile?Howcanyoutell?Yes10.NowinspectthecontentsofthesecondHTTPGETrequestfromyourbrowsertotheserver.Doyouseean“IF-MODIFIED-SINCE:”lineintheHTTPGET?Ifso,whatinformationfollowsthe“IF-MODIFIED-SINCE:”header

5、?有显示的内容：If-Modified-Since:Fri,05Oct201205:25:01GMTr11.WhatistheHTTPstatuscodeandphrasereturnedfromtheserverinresponsetothissecondHTTPGET?Didtheserverexplicitlyreturnthecontentsofthefile?Explain.状态码是304；没有显示返回文件的具体内容，而是返回304告诉客户端其本地cache的页面是最新的，于是客户端就可以直接从本地加载页面了，这样在网络上传输的数据就会大大减少，同

6、时也减轻了服务器的负担。12.HowmanyHTTPGETrequestmessagesweresentbyyourbrowser?2个13.Howmanydata-containingTCPsegmentswereneededtocarrythesingleHTTPresponse?5个14.WhatisthestatuscodeandphraseassociatedwiththeresponsetotheHTTPGETrequest?状态码200短语ok；状态码404短语notfound15.ArethereanyHTTPstatuslinesinthetra

7、nsmitteddataassociatedwithaTCP-induced“Continuation”?16.HowmanyHTTPGETrequestmessagesweresentbyyourbrowser?TowhichInternetaddressesweretheseGETrequestssent?发送了三个HTTPGET请求，分别发送到的IP地址为：128.119.245.12128.119.240.90165.193.140.1417.Canyoutellwhetheryourbrowserdownloadedthetwoimagesseriall

8、y,orw