xml - How do I receive push notifications with Indy? -

i have device uses restful web services , have used request/response functionality whereby send command via http , responds appropriate xml.

i need use device's pus notifications. have tried same approach above whereby supply tidhttp.get procedure relevant http url , stream in place response, doesn't seem work. call get doesn't come back. makes sense me in push notifications opening http stream of communication between device , program , connection remain open streaming until closed.

my problem though don't know how xml stream if get method doesn't return. if program has hung. have tried put communication via device , reading of stream thread can continue on own , main application can check resultant xml not work.

i wondering if on complicating , if there simple solution. when send request , response, works fine; it's push streaming can't work.

if use url in internet explorer can see xml returned "busy" logo running indicating stream open.

i have run command through browser firefox mozilla 20.0.1 , seen wireshark captures push request , response. http part shown below:

get /elite/notifications/stream?resume=2013-05-06t00:00:00z http/1.1  host: 192.168.10.10  user-agent: mozilla/5.0 (windows nt 6.1; wow64; rv:20.0) gecko/20100101 firefox/20.0  accept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8  accept-language: en-us,en;q=0.5  accept-encoding: gzip, deflate  connection: keep-alive 

the request trying in delphi follows:

if feventstream = nil   feventstream := tstringstream.create(''); try   tapitem.fhttp.get(tapitem.i2ireaderip+'/elite/notifications/stream?resume=2013-05-01t00:00:00z',feventstream);   tapitem.feventxml := feventstream.readstring(feventstream.size); except   on e:exception begin     showmessage(e.message)   end; end; 

i have tried tidtcpconnection

  ftcpconn.iohandler.writeln(tapitem.i2ireaderip+i2i_push_event+'2013-05-01t00:00:00z');   while not terminated begin     xmlstring := xmlstring + ftcpconn.iohandler.readln;   end; 

any assistance in matter appreciated.

solution

---

in case adding keyword beginning of call worked. assumed tcp connection component requires knowledge of action (ie put etc) wish do, cant read mind, makes sense

ftcpconn.iohandler.writeln('get ' + tapitem.i2ireaderip+i2i_push_event+'2013-05-01t00:00:00z'); while not terminated begin   xmlstring := xmlstring + ftcpconn.iohandler.readln; end; 

tidhttp not support server-side pushes @ time (and then, there multiple ways server-side pushes can implemented - 1 rest service using?). have switch tidtcpclient, format , send http request manually, , use timer or thread read , parse pushed responses needed arrive.