Ethereal-users: [Ethereal-users] Five HTTP 200 responses for one single Request

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From: Raj Sinha <raj.sinha@xxxxxxxxx>
Date: Fri, 4 Nov 2005 13:29:22 -0500
Can some tell me why we are getting five HTTP responses for a single HTTP request.
 
What are we violating in the TCP IP ack that warrants a re transmission five times.
 
I would appreciate any help. Attached is the Etehereal trace. If you apply this filer you can see whats happening
(ip.addr eq 10.60.32.106 and ip.addr eq 10.160.117.16) and (tcp.port eq 80 and tcp.port eq 1032)
 
Frames 50, 173, 1089, 2707 gets re sent.
Raj
 
or see below
No.     Time        Source                Destination           Protocol Info
     23 2.493586    10.160.117.16         10.60.32.106          HTTP     GET /avaya/test/notworking.wml HTTP/1.1
 
Frame 23 (281 bytes on wire, 281 bytes captured)
Ethernet II, Src: 00:04:0d:29:54:60, Dst: 00:00:0c:07:ac:01
Internet Protocol, Src Addr: 10.160.117.16 ( 10.160.117.16), Dst Addr: 10.60.32.106 (10.60.32.106)
Transmission Control Protocol, Src Port: 1032 (1032), Dst Port: http (80), Seq: 0, Ack: 0, Len: 227
    Source port: 1032 (1032)
    Destination port: http (80)
    Sequence number: 0    (relative sequence number)
    Next sequence number: 227    (relative sequence number)
    Acknowledgement number: 0    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0018 (PSH, ACK)
    Window size: 8192
    Checksum: 0xa123 (correct)
Hypertext Transfer Protocol
    GET /avaya/test/notworking.wml HTTP/1.1\r\n
    Accept: image/vnd.wap.wbmp,text/vnd.wap.wml,*/*;q= 0.3\r\n
    Accept-Charset: UTF-8,ISO-8859-1,US-ASCII\r\n
    TE: trailers\r\n
    Host: teleweb\r\n
    User-Agent: AVAYA/IGEN/v2.2+(4620a)/0.0\r\n
    Connection: TE\r\n
    \r\n
 
No.     Time        Source                Destination           Protocol Info
     24 2.493586    10.60.32.106          10.160.117.16         HTTP     HTTP/1.1 200 OK
 
Frame 24 (1514 bytes on wire, 1514 bytes captured)
Ethernet II, Src: 00:09:12:1e:48:06, Dst: 00:04:0d:29:54:60
Internet Protocol, Src Addr: 10.60.32.106 ( 10.60.32.106), Dst Addr: 10.160.117.16 (10.160.117.16)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1032 (1032), Seq: 0, Ack: 227, Len: 1460
    Source port: http (80)
    Destination port: 1032 (1032)
    Sequence number: 0    (relative sequence number)
    Next sequence number: 1460    (relative sequence number)
    Acknowledgement number: 227    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
    Window size: 8090
    Checksum: 0x68a0 (correct)
    SEQ/ACK analysis
Hypertext Transfer Protocol
    HTTP/1.1 200 OK\r\n
    Server: Microsoft-IIS/4.0\r\n
    Date: Mon, 17 Oct 2005 15:24:42 GMT\r\n
    Content-Type: text/vnd.wap.wml\r\n
    Accept-Ranges: bytes\r\n
    Last-Modified: Fri, 22 Jul 2005 09:28:43 GMT\r\n
    ETag: "5687e4c09f8ec51:140f"\r\n
    Content-Length: 2527\r\n
    \r\n
eXtensible Markup Language
 
No.     Time        Source                Destination           Protocol Info
     25 2.493586    10.60.32.106          10.160.117.16         HTTP     Continuation or non-HTTP traffic
 
Frame 25 (1356 bytes on wire, 1356 bytes captured)
Ethernet II, Src: 00:09:12:1e:48:06, Dst: 00:04:0d:29:54:60
Internet Protocol, Src Addr: 10.60.32.106 ( 10.60.32.106), Dst Addr: 10.160.117.16 (10.160.117.16)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1032 (1032), Seq: 1460, Ack: 227, Len: 1302
    Source port: http (80)
    Destination port: 1032 (1032)
    Sequence number: 1460    (relative sequence number)
    Next sequence number: 2762    (relative sequence number)
    Acknowledgement number: 227    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0018 (PSH, ACK)
    Window size: 8090
    Checksum: 0x0624 (correct)
Hypertext Transfer Protocol
    Data (1302 bytes)
 

No.     Time        Source                Destination           Protocol Info
     26 2.503600    10.160.117.16         10.60.32.106          TCP      1032 > http [ACK] Seq=227 Ack=0 Win=8192 Len=0
 
Frame 26 (56 bytes on wire, 56 bytes captured)
Ethernet II, Src: 00:04:0d:29:54:60, Dst: 00:00:0c:07:ac:01
Internet Protocol, Src Addr: 10.160.117.16 ( 10.160.117.16), Dst Addr: 10.60.32.106 (10.60.32.106)
Transmission Control Protocol, Src Port: 1032 (1032), Dst Port: http (80), Seq: 227, Ack: 0, Len: 0
    Source port: 1032 (1032)
    Destination port: http (80)
    Sequence number: 227    (relative sequence number)
    Acknowledgement number: 0    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
    Window size: 8192
    Checksum: 0x9912 (correct)
    SEQ/ACK analysis
 
No.     Time        Source                Destination           Protocol Info
     50 4.676725    10.60.32.106          10.160.117.16         HTTP     HTTP/1.1 200 OK
 
Frame 50 (1514 bytes on wire, 1514 bytes captured)
Ethernet II, Src: 00:09:12:1e:48:06, Dst: 00:04:0d:29:54:60
Internet Protocol, Src Addr: 10.60.32.106 ( 10.60.32.106), Dst Addr: 10.160.117.16 (10.160.117.16)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1032 (1032), Seq: 0, Ack: 227, Len: 1460
    Source port: http (80)
    Destination port: 1032 (1032)
    Sequence number: 0    (relative sequence number)
    Next sequence number: 1460    (relative sequence number)
    Acknowledgement number: 227    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
    Window size: 8090
    Checksum: 0x68a0 (correct)
    SEQ/ACK analysis
Hypertext Transfer Protocol
    HTTP/1.1 200 OK\r\n
    Server: Microsoft-IIS/4.0\r\n
    Date: Mon, 17 Oct 2005 15:24:42 GMT\r\n
    Content-Type: text/vnd.wap.wml\r\n
    Accept-Ranges: bytes\r\n
    Last-Modified: Fri, 22 Jul 2005 09:28:43 GMT\r\n
    ETag: "5687e4c09f8ec51:140f"\r\n
    Content-Length: 2527\r\n
    \r\n
eXtensible Markup Language
 
No.     Time        Source                Destination           Protocol Info
    173 9.053018    10.60.32.106          10.160.117.16         HTTP     HTTP/1.1 200 OK
 
Frame 173 (1514 bytes on wire, 1514 bytes captured)
Ethernet II, Src: 00:09:12:1e:48:06, Dst: 00:04:0d:29:54:60
Internet Protocol, Src Addr: 10.60.32.106 ( 10.60.32.106), Dst Addr: 10.160.117.16 (10.160.117.16)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1032 (1032), Seq: 0, Ack: 227, Len: 1460
    Source port: http (80)
    Destination port: 1032 (1032)
    Sequence number: 0    (relative sequence number)
    Next sequence number: 1460    (relative sequence number)
    Acknowledgement number: 227    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
    Window size: 8090
    Checksum: 0x68a0 (correct)
    SEQ/ACK analysis
Hypertext Transfer Protocol
    HTTP/1.1 200 OK\r\n
    Server: Microsoft-IIS/4.0\r\n
    Date: Mon, 17 Oct 2005 15:24:42 GMT\r\n
    Content-Type: text/vnd.wap.wml\r\n
    Accept-Ranges: bytes\r\n
    Last-Modified: Fri, 22 Jul 2005 09:28:43 GMT\r\n
    ETag: "5687e4c09f8ec51:140f"\r\n
    Content-Length: 2527\r\n
    \r\n
eXtensible Markup Language
 
No.     Time        Source                Destination           Protocol Info
   1089 17.805603   10.60.32.106          10.160.117.16         HTTP     HTTP/1.1 200 OK
 
Frame 1089 (1514 bytes on wire, 1514 bytes captured)
Ethernet II, Src: 00:09:12:1e:48:06, Dst: 00:04:0d:29:54:60
Internet Protocol, Src Addr: 10.60.32.106 ( 10.60.32.106), Dst Addr: 10.160.117.16 (10.160.117.16)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1032 (1032), Seq: 0, Ack: 227, Len: 1460
    Source port: http (80)
    Destination port: 1032 (1032)
    Sequence number: 0    (relative sequence number)
    Next sequence number: 1460    (relative sequence number)
    Acknowledgement number: 227    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
    Window size: 8090
    Checksum: 0x68a0 (correct)
    SEQ/ACK analysis
Hypertext Transfer Protocol
    HTTP/1.1 200 OK\r\n
    Server: Microsoft-IIS/4.0\r\n
    Date: Mon, 17 Oct 2005 15:24:42 GMT\r\n
    Content-Type: text/vnd.wap.wml\r\n
    Accept-Ranges: bytes\r\n
    Last-Modified: Fri, 22 Jul 2005 09:28:43 GMT\r\n
    ETag: "5687e4c09f8ec51:140f"\r\n
    Content-Length: 2527\r\n
    \r\n
eXtensible Markup Language
 
No.     Time        Source                Destination           Protocol Info
   2707 35.300760   10.60.32.106          10.160.117.16         HTTP     HTTP/1.1 200 OK
 
Frame 2707 (1514 bytes on wire, 1514 bytes captured)
Ethernet II, Src: 00:09:12:1e:48:06, Dst: 00:04:0d:29:54:60
Internet Protocol, Src Addr: 10.60.32.106 ( 10.60.32.106), Dst Addr: 10.160.117.16 (10.160.117.16)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1032 (1032), Seq: 0, Ack: 227, Len: 1460
    Source port: http (80)
    Destination port: 1032 (1032)
    Sequence number: 0    (relative sequence number)
    Next sequence number: 1460    (relative sequence number)
    Acknowledgement number: 227    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
    Window size: 8090
    Checksum: 0x68a0 (correct)
    SEQ/ACK analysis
Hypertext Transfer Protocol
    HTTP/1.1 200 OK\r\n
    Server: Microsoft-IIS/4.0\r\n
    Date: Mon, 17 Oct 2005 15:24:42 GMT\r\n
    Content-Type: text/vnd.wap.wml\r\n
    Accept-Ranges: bytes\r\n
    Last-Modified: Fri, 22 Jul 2005 09:28:43 GMT\r\n
    ETag: "5687e4c09f8ec51:140f"\r\n
    Content-Length: 2527\r\n
    \r\n
eXtensible Markup Language
 

Attachment: badone.cap
Description: Binary data