Accept Trade Offer from Steam using Web-API & Java -


i have java steam trade bot reads through pending trade offers steam , declines them based on requirements. using official web api (using api key http://steamcommunity.com/dev/apikey) communicate requests steam. variable trade own api interface (which have debugged , works declining offers).

steamplug.steamrequest(method, query); basic http requester:

public static string steamrequest(string method, string query) {     try {         url obj = new url(query);         httpurlconnection con = (httpurlconnection) obj.openconnection();          con.setrequestmethod(method);          int responsecode = con.getresponsecode();          if (responsecode != 200 && responsecode != 201) {             return "err" + responsecode;         }          bufferedreader in = new bufferedreader(                 new inputstreamreader(con.getinputstream()));         string inputline;         stringbuilder response = new stringbuilder();          while ((inputline = in.readline()) != null) {             response.append(inputline);         }         in.close();          return response.tostring();     } catch (malformedurlexception | protocolexception e) {         e.printstacktrace();     } catch (ioexception e) {         // ignored     }      return null; }

this how declines trade offers:

steamplug.steamrequest(           "post",           "http://api.steampowered.com/ieconservice/declinetradeoffer/v0001/?key="            + steamplug.api_key + "&tradeofferid=" + trade.gettradeofferid() );

what trying accepting trades well. have tried this:

steamplug.steamrequest(           "post",           "https://steamcommunity.com/tradeoffer/" + trade.gettradeofferid() + "/accept?key="           + steamplug.api_key );

but receive 411 length required response.

i believe can accept offers using steam session authentification, possible accept trade offer using user's web-api key?

have read steam api docs? there's no trade accept function, assume can't accept trades via api. option check steambot's (though written in c#) trade functions , think straight http requests steam site (with proper steam authentication believe). myself writing bot currently, , single thing stops me - accepting trades.


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