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xml-unfriendly complete
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6 changed files with 33 additions and 35 deletions
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@ -37,6 +37,8 @@ Same test with characters which aren't practical
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in the XML syntax.
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in the XML syntax.
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#+INCLUDE: packets/xml-unfriendly.xml src xml
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#+INCLUDE: packets/xml-unfriendly.xml src xml
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#+INCLUDE: packets/xml-unfriendly.json src js
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#+INCLUDE: packets/xml-unfriendly.psyc src psyc
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** A message with PSYC-unfriendly strings
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** A message with PSYC-unfriendly strings
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PSYC prefixes data with length as soon as it
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PSYC prefixes data with length as soon as it
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@ -93,16 +95,8 @@ np
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** An average chat message
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** An average chat message
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XMPP:
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#+INCLUDE: packets/chat_msg.xml src xml
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#+INCLUDE: packets/chat_msg.xml src xml
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JSON:
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#+INCLUDE: packets/chat_msg.json src js
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#+INCLUDE: packets/chat_msg.json src js
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PSYC:
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#+INCLUDE: packets/chat_msg.psyc src psyc
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#+INCLUDE: packets/chat_msg.psyc src psyc
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Why PSYC doesn't have an id? Because packet counting from contexts
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Why PSYC doesn't have an id? Because packet counting from contexts
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@ -155,7 +149,19 @@ Pure syntax comparisons above, protocol performance comparisons below:
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These tests were performed on a 2.53 GHz Intel(R) Core(TM)2 Duo P9500 CPU.
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These tests were performed on a 2.53 GHz Intel(R) Core(TM)2 Duo P9500 CPU.
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* Conclusions
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* Conclusions
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... TBD ...
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The Internet has developed two major breeds of protocol formats.
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The binary ones are extremely efficient but usually not very flexible
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while the plain-text ones are reaching out for achieving perfection
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in data representation while leaving the path of efficiency. Some
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protocols such as HTTP and SIP are in-between these two schools,
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offering both a text-based extensible syntax (it's actually easier to
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add a header to HTTP than to come up with a namespace for XMPP...)
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and the ability to deliver binary data. But these protocols do not
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come with native data structure support. PSYC is a protocol that
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combines the compactness and efficiency of binary protocols with the
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extensibility of text-based protocols and still provides for enough
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data structuring to rarely require the use of other data formats.
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* Criticism
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* Criticism
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Are we comparing apples and oranges? Yes and no, depends on what you
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Are we comparing apples and oranges? Yes and no, depends on what you
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@ -192,7 +198,6 @@ After a month of development libpsyc is already performing pretty
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well, but we presume various optimizations, like rewriting parts
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well, but we presume various optimizations, like rewriting parts
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in assembler, are possible.
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in assembler, are possible.
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* Appendix
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* Appendix
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** Tools used
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** Tools used
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@ -208,3 +213,5 @@ xmlbench:
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: parse/libxml-sax 1000000 $file
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: parse/libxml-sax 1000000 $file
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: parse/libxml 1000000 $file
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: parse/libxml 1000000 $file
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: parse/rapidxml 1000000 $file
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: parse/rapidxml 1000000 $file
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See also "make bench"
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@ -1,9 +1,4 @@
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<message
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<message from='romeo@example.net/orchard' to='juliet@example.com/balcony'>
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from='romeo@example.net/orchard'
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id='sl3nx51f'
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to='juliet@example.com/balcony'
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type='chat'
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xml:lang='en'>
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<body>"Neither, fair saint, if either thee dislike.", he said.
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<body>"Neither, fair saint, if either thee dislike.", he said.
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And
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And
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the
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the
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@ -1,9 +1,4 @@
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<message
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<message from='juliet@example.com/balcony' to='romeo@example.net'>
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from='juliet@example.com/balcony'
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id='c8xg3nf8'
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to='romeo@example.net'
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type='chat'
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xml:lang='en'>
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<subject>I implore you with a pointless
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<subject>I implore you with a pointless
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newline in a header variable</subject>
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newline in a header variable</subject>
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<body>Wherefore art thou, Romeo?
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<body>Wherefore art thou, Romeo?
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3
bench/packets/xml-unfriendly.json
Normal file
3
bench/packets/xml-unfriendly.json
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@ -0,0 +1,3 @@
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["message",{"from":"juliet@example.com/balcony","to":"romeo@example.net"},
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"Pro\x010De\x017D jsi ty, Romeo?"]
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6
bench/packets/xml-unfriendly.psyc
Normal file
6
bench/packets/xml-unfriendly.psyc
Normal file
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@ -0,0 +1,6 @@
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:_source psyc://example.com/~juliet
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:_target psyc://example.net/~romeo
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_message
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PročeŽ jsi ty, Romeo?
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@ -1,11 +1,3 @@
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<message
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<message from='juliet@example.com/balcony' to='romeo@example.net'>
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from='juliet@example.com/balcony'
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<body>PročeŽ jsi ty, Romeo?</body>
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id='z94nb37h'
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to='romeo@example.net'
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type='chat'
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xml:lang='en'>
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<body>Wherefore art thou, Romeo?</body>
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<body xml:lang='cs'>
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PročeŽ jsi ty, Romeo?
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</body>
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</message>
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</message>
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