Re: [ANN] Aleph 0.4.1

[Alan Moore]

This is *way* better than my suggestion... thanks Zach!

Alan

On Thursday, April 7, 2016 at 9:20:16 PM UTC-7, Zach Tellman wrote:
>
> This is considerably simpler than the suggestions in this thread, but I've 
> written a very basic statsd client and server in the literate examples: 
> http://aleph.io/aleph/literate.html#aleph.examples.udp.  Feedback is 
> welcome.
>
> On Saturday, April 2, 2016 at 11:44:53 PM UTC-7, Zach Tellman wrote:
>>
>> This release represents a number of incremental improvements to 0.4.0, 
>> which has been handling billions of daily requests for close to a year.  
>>
>> * Documentation can be found at http://aleph.io/
>> * Literate examples of usage can be found at 
>> http://aleph.io/aleph/literate.html
>> * Comparative benchmarks can be found at 
>> https://www.techempower.com/benchmarks/#section=data-r12=peak=plaintext=4,
>>  
>> which may or may not be relevant to your particular use case
>>
>> If anyone has questions, I'm happy to answer them.
>>
>

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Re: [ANN] Aleph 0.4.1

[Zach Tellman]

This is considerably simpler than the suggestions in this thread, but I've 
written a very basic statsd client and server in the literate 
examples: http://aleph.io/aleph/literate.html#aleph.examples.udp.  Feedback 
is welcome.

On Saturday, April 2, 2016 at 11:44:53 PM UTC-7, Zach Tellman wrote:
>
> This release represents a number of incremental improvements to 0.4.0, 
> which has been handling billions of daily requests for close to a year.  
>
> * Documentation can be found at http://aleph.io/
> * Literate examples of usage can be found at 
> http://aleph.io/aleph/literate.html
> * Comparative benchmarks can be found at 
> https://www.techempower.com/benchmarks/#section=data-r12=peak=plaintext=4,
>  
> which may or may not be relevant to your particular use case
>
> If anyone has questions, I'm happy to answer them.
>

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Re: [ANN] Aleph 0.4.1

[Sander]

Zach Tellman wrote (ao):
> I'm not sure I'll have time to look at the spec you linked anytime
> soon, but I think it's reasonable to have some UDP-related code in the
> literate examples. I'll think about what would be a decent use case.

Very simple chatserver/client with mosh (mobile shell) like capabilities?

Sander

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Re: [ANN] Aleph 0.4.1

[Rangel Spasov]

Zach - thank you for all the work you do on Aleph, I use it every day!

On Saturday, April 2, 2016 at 11:44:53 PM UTC-7, Zach Tellman wrote:
>
> This release represents a number of incremental improvements to 0.4.0, 
> which has been handling billions of daily requests for close to a year.  
>
> * Documentation can be found at http://aleph.io/
> * Literate examples of usage can be found at 
> http://aleph.io/aleph/literate.html
> * Comparative benchmarks can be found at 
> https://www.techempower.com/benchmarks/#section=data-r12=peak=plaintext=4,
>  
> which may or may not be relevant to your particular use case
>
> If anyone has questions, I'm happy to answer them.
>

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Re: [ANN] Aleph 0.4.1

[Alan Moore]

Thanks for the awesome library!

My vote for UDP examples: mDNS (multicast DNS) or SSDP discovery protocols :-)

Alan

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Re: [ANN] Aleph 0.4.1

[Zach Tellman]

Hi Adrian,

Glad to hear that you're getting good use out of Aleph.  As for the UDP
side of things, if you're using it (as games often do) to reimplement half
of TCP, that may not work well with the functional operators in
manifold.stream.  However, using `put!`, `take!`, and a few operators from
manifold.deferred like `chain` and `loop`, you should be able to easily
build any arbitrary call and response logic you need.  The code you write
will end up being pretty imperative, but sometimes that's just the best way
to reason about your problem.

I'm not sure I'll have time to look at the spec you linked anytime soon,
but I think it's reasonable to have some UDP-related code in the literate
examples.  I'll think about what would be a decent use case.

Best,
Zach

On Sun, Apr 3, 2016 at 12:52 PM  wrote:

> Awesome! At Vital Labs we use Aleph in production for our HTTP and (soon
> to be) websocket services. I have nothing but good things to say about it.
> It makes using Netty a breeze in Clojure.
>
> For an unrelated side project, I have been using Aleph to communicate over
> UDP with an old MMORPG called Star Wars Galaxies. Since UDP is not stream
> oriented, some of the architecture which make Aleph easy to reason about
> through Manifold for HTTP/TCP do not seem to carry over as cleanly when
> dealing with UDP services.
>
> Would you be open to writing a comprehensive UDP example for Aleph so that
> potential users could see how the author intends such services to be
> written in tandem with your other libraries, namely Manifold, Gloss, and
> byte-streams?
>
> In particular, SWG uses a convoluted protocol which involves optional XOR
> decryption of the body using an integer exchanged in the first packet you
> see from the game client (and saved for all future communication with the
> client until they go link dead), followed by optional decompression with
> DEFLATE of the body (not the header nor footer) depending on a value in the
> decrypted first byte of the footer, followed by variable-length (opcode
> driven) body decoding. To deal with the problem of unreliable transmission,
> you also need to ack sequenced packets before responding to a specific kind
> of message. Sometimes this needs to be repeated due to loss, etc. To
> respond you also need to invert the decoding process, so compress ->
> encrypt -> etc.
>
> Here's an overview of the protocol if you're interested in seeing the
> potential complexities that come up with protocols like these:
> http://wiki.swganh.org/index.php/Packet_Guides
>
> Since many of these requirements break the more functional, streaming
> nature of Manifold's design I have found that the code quickly devolves
> into madness. I imagine it would be very enlightening to see how you would
> solve these or similar problems with Aleph.
>
> Thanks for the great library,
> Adrian
>
> On Sunday, April 3, 2016 at 2:44:53 AM UTC-4, Zach Tellman wrote:
>>
>> This release represents a number of incremental improvements to 0.4.0,
>> which has been handling billions of daily requests for close to a year.
>>
>> * Documentation can be found at http://aleph.io/
>> * Literate examples of usage can be found at
>> http://aleph.io/aleph/literate.html
>> * Comparative benchmarks can be found at
>> https://www.techempower.com/benchmarks/#section=data-r12=peak=plaintext=4,
>> which may or may not be relevant to your particular use case
>>
>> If anyone has questions, I'm happy to answer them.
>>
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Re: [ANN] Aleph 0.4.1

[adrian . medina]

Awesome! At Vital Labs we use Aleph in production for our HTTP and (soon to 
be) websocket services. I have nothing but good things to say about it. It 
makes using Netty a breeze in Clojure. 

For an unrelated side project, I have been using Aleph to communicate over 
UDP with an old MMORPG called Star Wars Galaxies. Since UDP is not stream 
oriented, some of the architecture which make Aleph easy to reason about 
through Manifold for HTTP/TCP do not seem to carry over as cleanly when 
dealing with UDP services. 

Would you be open to writing a comprehensive UDP example for Aleph so that 
potential users could see how the author intends such services to be 
written in tandem with your other libraries, namely Manifold, Gloss, and 
byte-streams? 

In particular, SWG uses a convoluted protocol which involves optional XOR 
decryption of the body using an integer exchanged in the first packet you 
see from the game client (and saved for all future communication with the 
client until they go link dead), followed by optional decompression with 
DEFLATE of the body (not the header nor footer) depending on a value in the 
decrypted first byte of the footer, followed by variable-length (opcode 
driven) body decoding. To deal with the problem of unreliable transmission, 
you also need to ack sequenced packets before responding to a specific kind 
of message. Sometimes this needs to be repeated due to loss, etc. To 
respond you also need to invert the decoding process, so compress -> 
encrypt -> etc. 

Here's an overview of the protocol if you're interested in seeing the 
potential complexities that come up with protocols like 
these: http://wiki.swganh.org/index.php/Packet_Guides

Since many of these requirements break the more functional, streaming 
nature of Manifold's design I have found that the code quickly devolves 
into madness. I imagine it would be very enlightening to see how you would 
solve these or similar problems with Aleph. 

Thanks for the great library,
Adrian

On Sunday, April 3, 2016 at 2:44:53 AM UTC-4, Zach Tellman wrote:
>
> This release represents a number of incremental improvements to 0.4.0, 
> which has been handling billions of daily requests for close to a year.  
>
> * Documentation can be found at http://aleph.io/
> * Literate examples of usage can be found at 
> http://aleph.io/aleph/literate.html
> * Comparative benchmarks can be found at 
> https://www.techempower.com/benchmarks/#section=data-r12=peak=plaintext=4,
>  
> which may or may not be relevant to your particular use case
>
> If anyone has questions, I'm happy to answer them.
>

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[ANN] Aleph 0.4.1

[Zach Tellman]

This release represents a number of incremental improvements to 0.4.0, 
which has been handling billions of daily requests for close to a year.  

* Documentation can be found at http://aleph.io/
* Literate examples of usage can be found 
at http://aleph.io/aleph/literate.html
* Comparative benchmarks can be found 
at 
https://www.techempower.com/benchmarks/#section=data-r12=peak=plaintext=4,
 
which may or may not be relevant to your particular use case

If anyone has questions, I'm happy to answer them.

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