Yeah, I could, but for short chunks of code, inline with markdown
code-formatting is hugely easier.
I had forgotten about wrap. Moot point now, I guess.
On Thursday, February 21, 2013 10:53:11 AM UTC+2, greelgorke wrote:
>
> you can use gists and link to them.
>
> i remember, that underscore has a wrap function, you could use it or copy
> it's implementation.
>
> Am Donnerstag, 21. Februar 2013 09:37:53 UTC+1 schrieb deitch:
>>
>> So I did something like this (pseudocode), works pretty well. I am
>> currently using it to transparently cache requests. This would be *so* much
>> easier if google groups supported markdown like github.
>
>
>> // config includes what to call next in the chain, ttl for my cache, and
>> a secret key to flush the cache remotely, etc. In one instance, I have a
>> list of regex for which to invoke on the URL
>> module.exports = function(config) {
>> return function(req,res,next) {
>> wrapResponse(res);
>> // do the next thing
>> };
>> };
>>
>> wrapResponse looks like:
>>
>> wrapResponse = function(res) {
>> write = res.write, writeHead = res.writeHead, setHeader =
>> res.setHeader, removeHeader = res.removeHeader, end = res.end;
>> res.write = function(chunk,encoding) {
>> // do what you want with it, like caching
>> write.apply(this,arguments);
>> };
>> };
>>
>> The above is generic, but I turned it into a nice performant in-memory
>> caching module to wrap node-http-proxy. Variable ttl, and external
>> flushable.
>>
>> On Wednesday, February 20, 2013 10:50:12 PM UTC+2, deitch wrote:
>>>
>>> Just introspection. I am happy to let it go along its way in both
>>> directions, as long as I can peek in and see what data passes.
>>>
>>> On Wednesday, February 20, 2013 10:42:59 PM UTC+2, greelgorke wrote:
>>>>
>>>> it's not clear how/what for you want to utilize the response.
>>>> introspection? manipulation?
>>>>
>>>> Am Mittwoch, 20. Februar 2013 21:05:35 UTC+1 schrieb deitch:
>>>>>
>>>>> Yeah, I should have been more clear, shouldn't I?
>>>>>
>>>>> Adding handling to node-http-proxy. It takes as its input the
>>>>> (request,response) pair from an http server callback handler. I want to
>>>>> wrap it so I can cache as well as some other processing.
>>>>>
>>>>> Normal http operation looks like this:
>>>>>
>>>>> Client ----> Node
>>>>>
>>>>> Proxy operation looks like this
>>>>>
>>>>> Client ----> Node (running node-http-proxy) ----> Remote service
>>>>>
>>>>> What I am trying to do:
>>>>>
>>>>>
>>>>> Client ----> Node (running my handler, passes to node-http-proxy)
>>>>> ----> Remote service
>>>>>
>>>>> It is easier to get in front of the request; I want to be able to
>>>>> instrument the response.
>>>>>
>>>>> Is that clearer?
>>>>>
>>>>>
>>>>>
>>>>> On Wednesday, February 20, 2013 9:24:21 PM UTC+2, greelgorke wrote:
>>>>>>
>>>>>> what exactly are you trying to do? of course you can always wrap
>>>>>> anything and observe actions etc., but it's not the problem you're
>>>>>> trying
>>>>>> to solve in first place, right?
>>>>>>
>>>>>> Am Mittwoch, 20. Februar 2013 16:46:31 UTC+1 schrieb deitch:
>>>>>>>
>>>>>>> Is there any way to wrap http.serverResponse?
>>>>>>>
>>>>>>> E.g. I am using a module that takes as its input http.serverRequest
>>>>>>> and http.serverResponse. I want to be able to transparently catch any
>>>>>>> actions that the module performs on http.serverResponse so I can cache
>>>>>>> the
>>>>>>> statusCode, header and response.
>>>>>>>
>>>>>>> Do I have to override each and every major function - write,
>>>>>>> writeHead, end, setHeader, removeHeader - to do so? Is there a simpler
>>>>>>> way?
>>>>>>> I thought about looking for some 'end' type event, but that would miss
>>>>>>> all
>>>>>>> of the streaming data.
>>>>>>>
>>>>>>>
>>>>>>>
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