exchange: support sorting URLs by client-side preferences
Not all bundles are appropriate for all clients. For example, someone
with a slow Internet connection may want to prefer bz2 bundles over gzip
bundles because they are smaller and don't take as long to transfer.
This is information that a server cannot know on its own. So, we invent
a mechanism for "preferring" server-advertised URLs based on their
attributes.
We could invent a negotiation between client and server where the client
sends its preferences and the sorting/filtering is done server-side.
However, this feels complex. We can avoid complicating the wire protocol
and exposing ourselves to backwards compatible concerns by performing
the sorting locally.
This patch defines a new config option for expressing preferred
attributes in server-advertised bundles.
At Mozilla, we leverage this feature so clients in fast data centers
prefer uncompressed bundles. (We advertise gzip bundles first because
that is a reasonable default.)
I consider this an advanced feature. I'm on the fence as to whether it
should be documented in `hg help config`.
#require killdaemons
Test wire protocol argument passing
Setup repo:
$ hg init repo
Local:
$ hg debugwireargs repo eins zwei --three drei --four vier
eins zwei drei vier None
$ hg debugwireargs repo eins zwei --four vier
eins zwei None vier None
$ hg debugwireargs repo eins zwei
eins zwei None None None
$ hg debugwireargs repo eins zwei --five fuenf
eins zwei None None fuenf
HTTP:
$ hg serve -R repo -p $HGPORT -d --pid-file=hg1.pid -E error.log -A access.log
$ cat hg1.pid >> $DAEMON_PIDS
$ hg debugwireargs http://localhost:$HGPORT/ un deux trois quatre
un deux trois quatre None
$ hg debugwireargs http://localhost:$HGPORT/ \ un deux trois\ qu\ \ atre
un deux trois qu atre None
$ hg debugwireargs http://localhost:$HGPORT/ eins zwei --four vier
eins zwei None vier None
$ hg debugwireargs http://localhost:$HGPORT/ eins zwei
eins zwei None None None
$ hg debugwireargs http://localhost:$HGPORT/ eins zwei --five fuenf
eins zwei None None None
$ hg debugwireargs http://localhost:$HGPORT/ un deux trois onethousandcharactersxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
un deux trois onethousandcharactersxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx None
$ cat error.log
$ cat access.log
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:four=quatre&one=un&three=trois&two=deux (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:four=quatre&one=un&three=trois&two=deux (glob)
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:four=qu++atre&one=+un&three=trois+&two=deux (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:four=qu++atre&one=+un&three=trois+&two=deux (glob)
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:four=vier&one=eins&two=zwei (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:four=vier&one=eins&two=zwei (glob)
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:one=eins&two=zwei (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:one=eins&two=zwei (glob)
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:one=eins&two=zwei (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:one=eins&two=zwei (glob)
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:four=onethousandcharactersxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx&one x-hgarg-2:=un&three=trois&two=deux (glob)
* - - [*] "GET /?cmd=debugwireargs HTTP/1.1" 200 - x-hgarg-1:four=onethousandcharactersxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx&one x-hgarg-2:=un&three=trois&two=deux (glob)
HTTP without the httpheader capability:
$ HGRCPATH="`pwd`/repo/.hgrc"
$ export HGRCPATH
$ CAP=httpheader
$ . "$TESTDIR/notcapable"
$ hg serve -R repo -p $HGPORT2 -d --pid-file=hg2.pid -E error2.log -A access2.log
$ cat hg2.pid >> $DAEMON_PIDS
$ hg debugwireargs http://localhost:$HGPORT2/ un deux trois quatre
un deux trois quatre None
$ hg debugwireargs http://localhost:$HGPORT2/ eins zwei --four vier
eins zwei None vier None
$ hg debugwireargs http://localhost:$HGPORT2/ eins zwei
eins zwei None None None
$ hg debugwireargs http://localhost:$HGPORT2/ eins zwei --five fuenf
eins zwei None None None
$ cat error2.log
$ cat access2.log
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs&four=quatre&one=un&three=trois&two=deux HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs&four=quatre&one=un&three=trois&two=deux HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs&four=vier&one=eins&two=zwei HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs&four=vier&one=eins&two=zwei HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs&one=eins&two=zwei HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs&one=eins&two=zwei HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs&one=eins&two=zwei HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=debugwireargs&one=eins&two=zwei HTTP/1.1" 200 - (glob)
SSH (try to exercise the ssh functionality with a dummy script):
$ hg debugwireargs --ssh "python $TESTDIR/dummyssh" ssh://user@dummy/repo uno due tre quattro
uno due tre quattro None
$ hg debugwireargs --ssh "python $TESTDIR/dummyssh" ssh://user@dummy/repo eins zwei --four vier
eins zwei None vier None
$ hg debugwireargs --ssh "python $TESTDIR/dummyssh" ssh://user@dummy/repo eins zwei
eins zwei None None None
$ hg debugwireargs --ssh "python $TESTDIR/dummyssh" ssh://user@dummy/repo eins zwei --five fuenf
eins zwei None None None
Explicitly kill daemons to let the test exit on Windows
$ killdaemons.py