OpenACS / openacs-4 / packages / xotcl-core / tcl

bgdelivery-procs.tcl

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Commits this week: 0
Total Committers: 7
Last Commit: 02 May
Commits this week: 0
Total Lines of Code (LoC): 804
Net change in LoC this week: 0

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Friday 16 Nov 2018
7:39 pm

antoniop

Improve error handling idioms and handle additional error cases where the client has just disconnected

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7:10 pm

antoniop

Try to trap additional disconnection-related errors

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7:03 pm

antoniop

Put the puts operation in the try catch as well

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Friday 09 Nov 2018
12:01 pm

antoniop

Fix typo in comment

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12:00 pm

antoniop

Use finer grained error handling to intercept disconnection from client

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Thursday 08 Nov 2018
3:40 pm

antoniop

Treat failure to flush the channel as just a warning, because this usually just means client (e.g. browser in a chat) closed the connection

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Friday 31 Aug 2018
1:16 pm

gustafn

make sure to initialize global nonce value in bgdevlivery thread

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Sunday 05 Aug 2018
11:09 pm

gustafn

improve spelling

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  2. … 8 more files in changeset.
Wednesday 09 May 2018
5:33 pm

hectorr

Revert massive replacement of empty list creation sentences. The use of '[list]' instead of '{}' adds semantics that could be used for performance improvements in the future, such as using a different internal representation. There is already work in this direction, avoiding the generation of the string representation during comparison of empty strings (huge thanks to Stefan Sobernig for the pointer: https://core.tcl.tk/tcl/info/44527c632ed609c2).

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  2. … 475 more files in changeset.
Tuesday 01 May 2018
10:38 am

gustafn

improve grammar

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Wednesday 25 Apr 2018
9:47 pm

hectorr

Prefer '{}' to '[list]' when creating empty lists

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  2. … 204 more files in changeset.
Tuesday 09 Jan 2018
11:06 am

michaela

Fix typo chartype->charset

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Wednesday 13 Dec 2017
9:42 pm

gustafn

Use consistently xo::library to ensure application specific subclassability

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  2. … 13 more files in changeset.
Thursday 23 Nov 2017
9:05 am

gustafn

Reduce verbosity

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Saturday 21 Oct 2017
3:07 pm

gustafn

prefer XOTcl2 idioms

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Saturday 07 Oct 2017
8:26 pm

gustafn

Make ad_returnfile_background work also without libthread

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8:18 pm

gustafn

white space changes and typos

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8:14 pm

gustafn

improve documentation in the code, and make behavior more explicit

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Tuesday 08 Aug 2017
1:47 am

gustafn

merged changes from the oacs-5-9 branch and resolved conflicts

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  2. … 7834 more files in changeset.
Monday 27 Apr 2015
5:28 pm

victorg

Merging back to HEAD all changes that happened in branch oacs-5-8 between tags: vg-merge-oacs-5-8-from-20141027 and vg-merge-oacs-5-8-from-20150427

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  2. … 520 more files in changeset.
Monday 27 Oct 2014
5:38 pm

victorg

Merging back to HEAD branch oacs-5-8 (using tag vg-merge-oacs-5-8-from-20141027).

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Thursday 21 Mar 2013
10:58 pm

gustafn

- use new naviserver command ns_driversection if available to determine writer spooling

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Thursday 21 Feb 2013
1:31 pm

gustafn

- bgdelivery-procs:

* refactor subscriber logic to avoid code duplication

* implement sweeper to check for stale connections

- chat-procs:

* call bgdelivery sweeper from chat sweeper

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  2. … 1 more file in changeset.
Sunday 17 Feb 2013
12:48 pm

gustafn

- Added the changes mostly provided by Antonio Pisano to update the comet behavior for current browsers, which provide nowadays often more complete HTTP stacks.

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Thursday 14 Feb 2013
7:28 pm

gustafn

- fix parametrization of ns_writer for range requests

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Tuesday 29 Jan 2013
8:39 am

gustafn

- changed comet output to chunked encoding

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Thursday 06 Dec 2012
1:03 pm

gustafn

use lassign instead of lset

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12:55 pm

gustafn

make sure to configure the channel to nonblocking before we close. A close to a blocking channel can block and can therefore block all spools and therefore potentially the full server.

Background: Tcl's fcopy sets a channel to non-blocking. In earlier Tcl versions, the channel was left in the non-blocking state, also after fcopy terminates (e.g. in error cases).

Newer Tcl versions seem to reestablish the earlier state, so we have to care now for the problem in bgdelivery.

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Saturday 03 Nov 2012
3:45 pm

gustafn

- use naviserver writer thread if configured

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Friday 02 Nov 2012
12:40 pm

gustafn

Avoid potential attacks via too many open files.

Background: Tcl uses still select() for event processing, which has a pretty much hardcoded limit of max 1024 files (one has to recompile Tcl, libc, and maybe the kernel). With bgdelivery it is possible to deliver more than 1000 files simultaneously, but Tcl panics, when the number of descriptors is too large. We experienced the problem in a sitation, where the 1000+ requests were produced from a incorrect browser behavior (e.g. iPad issues a series of range requests rapidly without closing the last requests); bgdelivery allows now just one spooling request for a file from a user at one time.

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