On 08/03/2010 04:37, Shirely wrote:
No error log.
This is the return packet
No. Time Source Destination Protocol
Info
3749 202.714770 118.142.22.3 192.168.1.109 HTTP
HTTP/1.1 200 OK
Sure, but that does the access log say, does it also say zero bytes sent?
What happens if the line:
Utility.writeToFile("/WP.txt",str +"\n");
throws an exception?
The only line which writes output to the response is after that line, so
if something stops the page before or at that line, then the response
body will be empty.
Admittedly, I can't think of a way for the page to stop there as a
result of an exception and still send a 200 status, but it's worth
exploring.
Your JSP seems simple, but I can't tell exactly where it's writing the
WP.txt file to, so this may also be causing a problem.
p
Frame 3749 (170 bytes on wire, 170 bytes captured)
Ethernet II, Src: Tp-LinkT_d2:89:3a (00:25:86:d2:89:3a), Dst:
Tp-LinkT_b8:40:30 (00:27:19:b8:40:30)
Internet Protocol, Src: 118.142.22.3 (118.142.22.3), Dst: 192.168.1.109
(192.168.1.109)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
Total Length: 156
Identification: 0x112b (4395)
Flags: 0x02 (Don't Fragment)
Fragment offset: 0
Time to live: 119
Protocol: TCP (0x06)
Header checksum: 0xa38a [correct]
Source: 118.142.22.3 (118.142.22.3)
Destination: 192.168.1.109 (192.168.1.109)
Transmission Control Protocol, Src Port: http (80), Dst Port: 52568 (52568),
Seq: 1, Ack: 379, Len: 116
Source port: http (80)
Destination port: 52568 (52568)
[Stream index: 71]
Sequence number: 1 (relative sequence number)
[Next sequence number: 117 (relative sequence number)]
Acknowledgement number: 379 (relative ack number)
Header length: 20 bytes
Flags: 0x18 (PSH, ACK)
Window size: 65536 (scaled)
Checksum: 0xa7be [validation disabled]
[Good Checksum: False]
[Bad Checksum: False]
[SEQ/ACK analysis]
Hypertext Transfer Protocol
HTTP/1.1 200 OK\r\n
[Expert Info (Chat/Sequence): HTTP/1.1 200 OK\r\n]
Request Version: HTTP/1.1
Response Code: 200
Server: Apache-Coyote/1.1\r\n
Transfer-Encoding: chunked\r\n
Date: Mon, 08 Mar 2010 04:21:06 GMT\r\n
\r\n
HTTP chunked response
End of chunked encoding
Chunk size: 0 octets
Chunk boundary
0000 00 27 19 b8 40 30 00 25 86 d2 89 3a 08 00 45 00 .'....@0.%...:..E.
0010 00 9c 11 2b 40 00 77 06 a3 8a 76 8e 16 03 c0 a8 ....@.w...v.....
0020 01 6d 00 50 cd 58 78 1e 12 3a 3e 9b 5f d4 50 18 .m.P.Xx..:>._.P.
0030 01 00 a7 be 00 00 48 54 54 50 2f 31 2e 31 20 32 ......HTTP/1.1 2
0040 30 30 20 4f 4b 0d 0a 53 65 72 76 65 72 3a 20 41 00 OK..Server: A
0050 70 61 63 68 65 2d 43 6f 79 6f 74 65 2f 31 2e 31 pache-Coyote/1.1
0060 0d 0a 54 72 61 6e 73 66 65 72 2d 45 6e 63 6f 64 ..Transfer-Encod
0070 69 6e 67 3a 20 63 68 75 6e 6b 65 64 0d 0a 44 61 ing: chunked..Da
0080 74 65 3a 20 4d 6f 6e 2c 20 30 38 20 4d 61 72 20 te: Mon, 08 Mar
0090 32 30 31 30 20 30 34 3a 32 31 3a 30 36 20 47 4d 2010 04:21:06 GM
00a0 54 0d 0a 0d 0a 30 0d 0a 0d 0a T....0....
Pid Ster wrote:
On 06/03/2010 18:36, Shirely wrote:
I already monitor it by network packet level, I found that server side
have
receive the reqeust. and it have response it by sending out a packet. but
the response packet only have a "0" at the body part.
How many bytes does the access log say it sent?
Is there any error in any other log?
p
Shirley
n828cl wrote:
From: Shirely [mailto:shir...@powerelab.com]
Subject: Re: Tomcat response Blank Page
Then, I found that when it display blank page, it will not update the
session counter and also didn't read to text file.
Sounds like something in between is responding to the request, rather
than
it reaching the server. Try running Wireshark on each end and see if
you
can catch the failure.
- Chuck
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