0000135: Range requests may overlap, may be unordered

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Category

Severity

Reproducibility

Date Submitted

Last Update

0000135

[Resin]

minor

always

05-04-05 00:00

05-10-05 00:00

Reporter

sam

View Status

public

Assigned To

Priority

high

Resolution

unable to reproduce

Status

closed

Product Version

3.0.12

Summary

0000135: Range requests may overlap, may be unordered

Description

RSN-126
(rep by C Braunstein)

The Adobe acrobat client makes Range requests that are not
ordered, and may overlap. This may result from the Distiller
option of "Optimize for fast web viewing"

In particular, the first request in the log below has a third
range that overlaps the first two ranges, and the last request
has 27 unordered ranges specified in a single request.

The http spec does not require that the ranges are ordered, and
specifically gives an example of an overlapping range:

"
Several legal but not canonical specifications of the second 500
bytes (byte offsets 500-999, inclusive):
bytes=500-600,601-999
bytes=500-700,601-999
"

[17:30:38.697] [7] GET /hogwarts/gryffindor/pdf/400/4A40E69B6E4A6A2753FCEB57E729F5F
6.pdf HTTP/1.1
[17:30:38.697] [7] Accept: */*
[17:30:38.697] [7] Range: bytes=471883-472998, 474989-475608,
36616-72859
[17:30:38.697] [7] Accept-Encoding: gzip, deflate ; SV1)
[17:30:38.697] [7] User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1 ; SV1)
[17:30:38.697] [7] Host: new.knovel.com
[17:30:38.697] [7] Connection: Keep-Alive
[17:30:38.697] [7] Cache-Control: no-cache
[17:30:38.697] [7] Cookie: JSESSIONID=3Nbxsx_CNX6jVtuF
[17:30:38.697] using cache: /hogwarts/gryffindor/pdf/400/4A40E69B6E4A6A2753FCEB57E7 29F5F6.pdf
[17:30:38.697] [7] HTTP/1.1 206 Partial Content
[17:30:38.697] [7] ETag: "EM4v8VOLS/l"
[17:30:38.697] [7] Last-Modified: Mon, 07 Feb 2005 19:48:23 GMT
[17:30:38.697] [7] Accept-Ranges: bytes
[17:30:38.697] [7] Cache-Control: max-age=86400
[17:30:38.697] [7] Expires: Tue, 03 May 2005 21:30:38 GMT
[17:30:38.697] [7] Content-Type: multipart/byteranges; boundary=--98+eNEaORBt
[17:30:38.697] [7] Transfer-Encoding: chunked
[17:30:38.697] [7] chunk: 93
[17:30:38.697] [7] chunk: 95
[17:30:38.697] [7] chunk: 93
[17:30:38.775] [7] chunk: 21
[17:30:38.947] [7] keepalive
6.pdf HTTP/1.1
[17:30:39.479] [7] GET /hogwarts/gryffindor/pdf/400/4A40E69B6E4A6A2753FCEB57E729F5F
6.pdf HTTP/1.1
[17:30:39.479] [7] Accept: */*
[17:30:39.479] [7] Range: bytes=470335-471882
[17:30:39.479] [7] Accept-Encoding: gzip, deflate ; SV1)
[17:30:39.479] [7] User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1 ; SV1)
[17:30:39.479] [7] Host: new.knovel.com
[17:30:39.479] [7] Connection: Keep-Alive
[17:30:39.479] [7] Cache-Control: no-cache
[17:30:39.479] [7] Cookie: JSESSIONID=3Nbxsx_CNX6jVtuF
[17:30:39.479] using cache: /hogwarts/gryffindor/pdf/400/4A40E69B6E4A6A2753FCEB57E7
29F5F6.pdf
[17:30:39.479] [7] HTTP/1.1 206 Partial Content
[17:30:39.479] [7] ETag: "EM4v8VOLS/l"
[17:30:39.479] [7] Last-Modified: Mon, 07 Feb 2005 19:48:23 GMT
[17:30:39.479] [7] Accept-Ranges: bytes
[17:30:39.479] [7] Cache-Control: max-age=86400
[17:30:39.479] [7] Expires: Tue, 03 May 2005 21:30:39 GMT
[17:30:39.479] [7] Content-Range: bytes 470335-471882/475609
[17:30:39.479] [7] Content-Type: application/pdf
[17:30:39.479] [7] Content-Length: 1548
[17:30:39.479] [7] keepalive
[17:30:39.557] [7] GET /hogwarts/gryffindor/pdf/400/4A40E69B6E4A6A2753FCEB57E729F5F
6.pdf HTTP/1.1
[17:30:39.557] [7] Accept: */*
[17:30:39.557] [7] Range: bytes=473971-474988, 473969-473970, 461472-462758, 462 759-463993, 467144-468420, 465917-467143, 464192-465454, 463994-464191, 72860-73091, 73092-102629, 102630-104675, 459982-461262, 461263-461471, 104676-107445, 107446-112985, 112986-115755, 465659-465916, 465455-465658, 115756-121295, 468421-469644, 469645-469885, 121296-146955, 146956-149465, 149466-152699, 152700-155933, 469886-470334, 155934-198703
[17:30:39.557] [7] Accept-Encoding: gzip, deflate ; SV1)
[17:30:39.557] [7] User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1 ; SV1)
[17:30:39.557] [7] Host: new.knovel.com
[17:30:39.557] [7] Connection: Keep-Alive
[17:30:39.557] [7] Cache-Control: no-cache
[17:30:39.557] [7] Cookie: JSESSIONID=3Nbxsx_CNX6jVtuF
[17:30:39.557] using cache: /hogwarts/gryffindor/pdf/400/4A40E69B6E4A6A2753FCEB57E7
29F5F6.pdf
[17:30:39.557] [7] HTTP/1.1 206 Partial Content
[17:30:39.557] [7] ETag: "EM4v8VOLS/l"
[17:30:39.557] [7] Last-Modified: Mon, 07 Feb 2005 19:48:23 GMT
[17:30:39.557] [7] Accept-Ranges: bytes
[17:30:39.557] [7] Cache-Control: max-age=86400
[17:30:39.557] [7] Expires: Tue, 03 May 2005 21:30:39 GMT
[17:30:39.557] [7] Content-Type: multipart/byteranges; boundary=--4zxUUUhwupA
[17:30:39.557] [7] Transfer-Encoding: chunked
[17:30:39.557] [7] chunk: 93
[17:30:39.557] [7] chunk: 95
[17:30:39.557] [7] chunk: 95
[17:30:39.557] [7] chunk: 95
[17:30:39.557] [7] chunk: 95
[17:30:39.557] [7] chunk: 95
[17:30:39.557] [7] chunk: 95
[17:30:39.557] [7] chunk: 95
[17:30:39.557] [7] chunk: 93
[17:30:39.557] [7] chunk: 94
[17:30:39.619] [7] chunk: 95
[17:30:39.619] [7] chunk: 95
[17:30:39.619] [7] chunk: 95
[17:30:39.619] [7] chunk: 95
[17:30:39.619] [7] chunk: 95
[17:30:39.791] [7] chunk: 95
[17:30:39.791] [7] chunk: 95
[17:30:39.791] [7] chunk: 95
[17:30:39.791] [7] chunk: 95
[17:30:39.791] [7] chunk: 95
[17:30:39.791] [7] chunk: 95
[17:30:39.791] [7] chunk: 95
[17:30:39.947] [7] chunk: 95
[17:30:39.947] [7] chunk: 95
[17:30:39.947] [7] chunk: 95
[17:30:39.947] [7] chunk: 95
[17:30:39.947] [7] chunk: 95
[17:30:40.979] [7] chunk: 21
[17:30:41.088] [7] keepalive
[17:30:50.541] closing connection
TcpConnection[id=resin-tcp-connection-*:80-17,
socket=JniSocketImpl$18360202[60555872],port=Port[null:80]], total=7

Additional Information

Attached Files

Relationships

Notes
(0000161) sam 05-04-05 00:00	RSN-130

(0000162) ferg 05-04-05 00:00	server/058j, server/058k Verified that Resin is returning overlapping and unordered ranges correctly.

Issue History
Date Modified	Username	Field	Change
05-04-05 00:00	sam	New Issue
11-30-05 00:00	administrator	Fixed in Version	=> 3.0.13

Mantis 1.0.0rc3[^]

30 total queries executed.
28 unique queries executed.