Wireshark lab1

Topics: HTTP, Hypertext Transfer Protocol, Web server Pages: 3 (555 words) Published: October 16, 2014
Wireshark Lab 2: HTTP
Mark:
Question
Is your browser running HTTP version
1.0 or 1.1? What version of HTTP is
the
server running?

Answer
My browser is running HTTP 1.1. The
server is running HTTP 1.1

2

What languages (if any) does your
browser indicate that it can accept to
the
server?

en-us

3

What is the IP address of your
computer? Of the gaia.cs.umass.edu
server?

My IP: 192.168.2.14
Server IP: 128.119.254.12

4

What is the status code returned from
the server to your browser?

200

5

When was the HTML file that you are
retrieving last modified at the server?

Wed, 16 Jan 2013 03:26:01 GMT

6

How many bytes of content are being
returned to your browser?

128

7

By inspecting the raw data in the packet No, I don’t see any in the HTTP message content window, do you see any
below
headers within the data that are not
displayed in the packet-listing window?
If so, name one.

8

Inspect the contents of the first HTTP
GET request from your browser to the
server. Do you see an “IF-MODIFIED-

1

No There is no if-modified-since in the
fitrst GET

SINCE” line in the HTTP GET?
9

Inspect the contents of the server
response. Did the server explicitly
return the contents of the file? How can
you tell?

Yes, There a text returned in response to
the first GET.

10 Now inspect the contents of the second
HTTP GET request from your browser
to the server. Do you see an “IFMODIFIED-SINCE:” line in the HTTP GET? If so, what information follows
the “IF-MODIFIED-SINCE:” header?

Yes. This is the time for last modified for
website. It is still 24 Jan 2013 22:15:01
GMT

11 What is the HTTP status code and
phrase returned from the server in
response to this second HTTP GET?
Did the server explicitly return the
contents of the file?
Explain.

304. There is no text returned in response
to second GET because the file has not
been modified. Then, server didn’t send
text again....
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