Answered: dentify the version of HTTP us

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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HTTP_Capture

Identify the version of HTTP used by the client’s browser and the version used by the web server.
Identify and list the IP address and port of the host machine (web server).
Identify and list the IP address and port of the client machine (web browser).

Transcribed Image Text:lo. Time Source Destination Protocol Length Info 1 0.000000 2 0.046905 3 0.046956 192.168.1.140 174.143.213.184 TCP 74 57678 + 80 [SYN] Seq=0 Win=5840 Len=0 MSS=1460 SACK PERM=1 TSval=2216538 TSecr=0 WS=128 174.143.213.184 192.168.1.140 TCP 74 80 + 57678 [SYN, ACK] Seg=0 Ack=1 Win=5792 Len=0 MSS=1460 SACK PERM=1 TSval=835172936 TSecr=2216538 WS=64 192.168.1.140 174.143.213.184 TCP 66 57678 + 80 [ACK] Seg=1 Ack=1 Win=5888 Len=0 TSval=2216543 TSecr=835172936 174.143.213.184 HTTP 200 GET /images/layout/logo.png HTTP/1.0 66 80 + 57678 [ACK] Seq=1 Ack=135 Win=6912 Len=0 TSval=835172948 TSecr=2216543 1514 80 + 57678 [ACK] Seq=1 Ack=135 Win=6912 Len=1448 TSval=835172948 TSecr=2216543 [TCP segment of a reassembled PDU] 4 0.047068 192.168.1.140 5 0.094268 6 0.096673 174.143.213.184 192.168.1.140 TCP 174.143.213.184 192.168.1.140 TCP 7 0.096702 8 0.096785 9 0.096789 66 57678 + 80 [ACK] Seq=135 Ack=1449 Win=8832 Len=0 TSval=2216548 TSecr=835172948 1514 80 → 57678 [ACK] Seq=1449 Ack=135 Win=6912 Len=1448 TSval=835172948 TSecr=2216543 [TCP segment of a reassembled PDU] 66 57678 + 80 [ACK] Seg=135 Ack=2897 Win=11648 Len=0 TSval=2216548 TSecr=835172948 192.168.1.140 174.143.213.184 TCP 174.143.213.184 192.168.1.140 TCP 192.168.1.140 174.143.213.184 TCP 10 0.100001 174.143.213.184 192.168.1.140 TCP 1514 80 → 57678 [ACK] Seg=2897 Ack=135 Win=6912 Len=1448 TSval=835172948 TSecr=2216543 [TCP segment of a reassembled PDU] 11 0.100023 66 57678 + 80 [ACK] Seq=135 Ack=4345 Win=14592 Len=0 TSval=2216548 TSecr=835172948 1514 80 + 57678 [ACK] Seq=4345 Ack=135 Win=6912 Len=1448 TSval=835172961 TSecr=2216548 [TCP segment of a reassembled PDU] 192.168.1.140 174.143.213.184 TCP 12 0.144237 174.143.213.184 192.168.1.140 TCP v Frame 4: 200 bytes on wire (1600 bits), 200 bytes captured (1600 bits) Encapsulation type: Ethernet (1) Arrival Time: Mar 1, 2011 14:45:13.313889000 Central Standard Time [Time shift for this packet: 0.000000000 seconds] Epoch Time: 1299012313.313889000 seconds [Time delta from previous captured frame: 0.000112000 seconds] [Time delta from previous displayed frame: 0.000112000 seconds] [Time since reference or first frame: 0.047068000 seconds] Frame Number: 4 Frame Length: 200 bytes (1600 bits) Capture Length: 200 bytes (1600 bits) [Frame is marked: False] [Frame is ignored: False] [Protocols in frame: eth:ethertype:ip:tcp:http] [Coloring Rule Name: HTTP] [Coloring Rule String: http || tcp.port == 80 || http2] v Ethernet II, Src: ASUSTEKC_b3:01:84 (00:1d:60:b3:01:84), Dst: Actionte_2f:47:87 (00:26:62:2f:47:87) v Destination: Actionte_2f:47:87 (00:26:62:2f:47:87) Address: Actionte_2f:47:87 (00:26:62:2f:47:87) = LG bit: Globally unique address (factory default) IG bit: Individual address (unicast) ......0. .... .... .... ...0 .... .... .... .... .... v Source: ASUSTEKC_b3:01:84 (00:1d:60:b3:01:84) Address: ASUSTEKC_b3:01:84 (00:1d:60:b3:01:84) = LG bit: Globally unique address (factory default) = IG bit: Individual address (unicast) ..0. .... ...0 .... .... .... Type: IPV4 (Ox0800) v Internet Protocol Version 4, Src: 192.168.1.140, Dst: 174.143.213.184 0100 .... = Version: 4 .... 0101 = Header Length: 20 bytes (5) v Differentiated Services Field: Øx00 (DSCP: cse, ECN: Not-ECT) 0000 00.. = Differentiated Services Codepoint: Default (0) .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0) Total Length: 186 Identification: Øxcb5d (52061)

$> Flags: Øx018 (PSH, ACK) Window: 108 [Calculated window size: 6912] [Window size scaling factor: 64] Checksum: Øx7d05 [unverified] [Checksum Status: Unverified] Urgent Pointer: 0 > Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps > [SEQ/ACK analysis] > [Timestamps] TCP payload (325 bytes) TCP segment data (325 bytes) [16 Reassembled TCP Segments (22045 bytes): #6(1448), #8(1448), #10(1448), #12(1448), #14 Hypertext Transfer Protocol HTTP/1.1 200 OK\r\n > [Expert Info (Chat/Sequence): HTTP/1.1 200 OK\r\n] Response Version: HTTP/1.1 Status Code: 200 [Status Code Description: OK] Response Phrase: OK Server: nginx/0.8.53\r\n Date: Tue, 01 Mar 2011 20:45:16 GMT\r\n Content-Type: image/png\r\n v Content-Length: 21684\r\n [Content length: 21684] Last-Modified: Fri, 21 Jan 2011 03:41:14 GMT\r\n Connection: keep-alive\r\n Keep-Alive: timeout=20\r\n Expires: Wed, 29 Feb 2012 20:45:16 GMT\r\n Cache-Control: max-age=31536000\r\n Cache-Control: public\r\n Vary: Accept-Encoding\r\n Accept-Ranges : bytes\r\n \r\n [HTTP response 1/1] [Time since request: 0.152882000 seconds] [Request in frame: 41 [Request URI: http://packetlife.net/images/layout/logo.png] File Data: 21684 bytes Portable Network Graphics$

Transcribed Image Text:> Flags: Øx018 (PSH, ACK) Window: 108 [Calculated window size: 6912] [Window size scaling factor: 64] Checksum: Øx7d05 [unverified] [Checksum Status: Unverified] Urgent Pointer: 0 > Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps > [SEQ/ACK analysis] > [Timestamps] TCP payload (325 bytes) TCP segment data (325 bytes) [16 Reassembled TCP Segments (22045 bytes): #6(1448), #8(1448), #10(1448), #12(1448), #14 Hypertext Transfer Protocol HTTP/1.1 200 OK\r\n > [Expert Info (Chat/Sequence): HTTP/1.1 200 OK\r\n] Response Version: HTTP/1.1 Status Code: 200 [Status Code Description: OK] Response Phrase: OK Server: nginx/0.8.53\r\n Date: Tue, 01 Mar 2011 20:45:16 GMT\r\n Content-Type: image/png\r\n v Content-Length: 21684\r\n [Content length: 21684] Last-Modified: Fri, 21 Jan 2011 03:41:14 GMT\r\n Connection: keep-alive\r\n Keep-Alive: timeout=20\r\n Expires: Wed, 29 Feb 2012 20:45:16 GMT\r\n Cache-Control: max-age=31536000\r\n Cache-Control: public\r\n Vary: Accept-Encoding\r\n Accept-Ranges : bytes\r\n \r\n [HTTP response 1/1] [Time since request: 0.152882000 seconds] [Request in frame: 41 [Request URI: http://packetlife.net/images/layout/logo.png] File Data: 21684 bytes Portable Network Graphics

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