[指南]计算机网络实验.doc

陕西师范大学　计算机网络　实验报告 实验三 HTTP 一、实验目的 1.通过使用wireshark软件掌握基本的GET，HTTP /响应交互和消息格式 2．掌握探索HTTP协议的方法。 二、实验器材 1.PC机电脑一台。 2．下载wireshark软件并安装 三、实验操作步骤及结果 1. The Basic HTTP GET/response interaction 1 Start up your web browser. 2. Start up the Wireshark packet sniffer, as described in the Introductory lab (but don’t yet begin packet capture). Enter “http” (just the letters, not the quotation marks) in the display-filter-specification window, so that only captured HTTP messages will be displayed later in the packet-listing window. (We’re only interested in the HTTP protocol here, and don’t want to see the clutter of all captured packets). 3. Wait a bit more than one minute (we’ll see why shortly), and then begin Wireshark packet capture. 4. Enter the following to your browser /wireshark-labs/HTTP-wireshark-file1.html Your browser should display the very simple, one-line HTML file. 5. Stop Wireshark packet capture. 实验截图如下： 1. Is your browser running HTTP version 1.0 or 1.1? What version of HTTP is the server running? 我的浏览器上运行的HTTP版本是1.1，在版本为的HTTP服务器上运行。 2. What languages (if any) does your browser indicate that it can accept to the server? 表明可以接受的语言是： 3. What is the IP address of your computer? Of the server? 我的计算机的IP地址是：8 ，服务器是：2。 4. What is the status code returned from the server to your browser? 5. When was the HTML file that you are retrieving last modified at the server?  6. How many bytes of content are being returned to your browser? 7. By inspecting the raw data in the packet content window, do you see any headers within the data that are not displayed in the packet-listing window? If so, name one 以下网页可得：HYPERLINK /wireshark-labs/HTTP-wireshark-file1.html/wireshark-labs/HTTP-wireshark-file1.html Congratulations.Youvedownloadedthefile /wireshark-labs/HTTP-wireshark-file1.html! 2. The HTTP CONDITIONAL GET/response interaction ? Start up the Wireshark packet sniffer ? Enter the following URL into your browser /wireshark-labs/HTTP-wireshark-file2.html You