Databases
StackOverflow2013
Postsdbo
POHow to make Apache accept requests, without waiting for client to recv responses?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to make Apache accept requests, without waiting for client to recv responses?
    primarykey
    data
    text
    <p>I wrote a simple socket send routine that sends multiple HTTP requests to apache, essentially logging some data into database (WinSock TCP/IP->Apache->PHP->MySQL). I send HTTP POST request, wait for 200 OK response, then send another HTTP POST request, wait for 200 OK response, ... many times over the same socket. The request-response roundtrip takes ~100 ms. I can't send the next request until I read the response to the previous request, Apache just won't process the requests like that. Otherwise it works fine (if slow).</p> <p>I'd like to be able to send a continuous stream of requests to Apache, regardless of the responses. I'm ok if the socket closes and some requests will be dropped mid-stream, but if all requests generate "200 OK", I'd like to just send a bunch of packets to Apache, and let Apache process them one by one, responding to each in order. Or even not responding, I don't really care in this particular case.</p> <p>Is there any way to configure Apache to do that? I don't know enough about sockets to understand why it's necessary to wait to receive HTTP response before sending the next request. I don't know of any fundamental problem with just queuing requests on Apache side, and responding to them in order without waiting for ACK from the client. It probably breaks some protocol rules to queue multiple HTTP requests if they're sent as one packet, but I'm hoping Apache has some way to process this situation. Any help or explanation as to why this is impossible would be appreciated. </p> <p>Thanks!</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USSergiy Migdalskiy
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COWhy not simply open X connections to the server, and use the first connection which isn't waiting for a response.
      singulars
      1. POHow to make Apache accept requests, without waiting for client to recv responses?
      1. USPaul Dixon
    2. COAlso note that you should be able to use HTTP pipelining to send multiple requests on the same connection - https://en.wikipedia.org/wiki/HTTP_pipelining
      singulars
      1. POHow to make Apache accept requests, without waiting for client to recv responses?
      1. USPaul Dixon
    3. COPipelining sounds like exactly what I'm doing (thanks for the link - I didn't know of this feature at all), except my WAMP Apache 2.4 is dropping my 2nd request unless I wait for the response and closes/resets the socket... "Non-idempotent methods like POST should not be pipelined. Sequences of GET and HEAD requests can always be pipelined" I'll experiment with it - maybe I need to use GET. Otherwise, each connection costs resources and takes ~1ms at best, and that's significant for my use case; I'll rather drop requests or spend some dev time coalescing multiple requests into one.
      singulars
      1. POHow to make Apache accept requests, without waiting for client to recv responses?
      1. USSergiy Migdalskiy
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload