datagram - Java DatagramPacket, how do I separate it? -


so i've got datagrampacket gets sent client server. i'd know how can separate data multiple values.

i.e, lets want send 2 variables, x , y, , want receive them 2 variables on server-side. how this?

int x = 5; int y = 10;  //send data server using pipe | delimiter byte[] data = integer.tostring(x) + "|" + integer.tostring(y).getbytes(); datagrampacket packet = new datagrampacket(data, data.length, host, port);  ...  //receive data client packet = new datagrampacket(new byte[packetsize], packetsize);  //receive packet (blocking) socket.receive(packet);  int x = packetseparate(packet, "an integer"); int y = packetseparate(packet, "an integer");

in other words, on server side after i've sent string byte array client, how able say: "integer x first integer byte array known as: packet.getdata()".

int x = packet.getdata().getaninteger(); int y = packet.getdata().getaninteger();

also, efficient say, networking game, send string bytes? or better convert each individual item own bytes , append byte array?

an integer 4 bytes long, read 4 bytes first integer, read next 4 next integer. in way dont need use strings send integers. google on how convert byte integer.

alternatively should use networking library netty has bytebuf buffer class provides methods readint, readlong etc. , while @ it, there game servers written in netty might out.


Comments

Post a Comment

Popular posts from this blog

android - Get AccessToken using signpost OAuth without opening a browser (Two legged Oauth) -

i using signpost oauth access data magento server. have read various tutorials on same , reach point open browser user can enter credentials. however, per requirement have automate part. hence, user should not browser page. have set-up done on server side ( magento ), hit url , returned call page. same through program in android. i have tried below, consumer = new commonshttpoauthconsumer(key, secret); provider = new commonshttpoauthprovider(oauth_init_url,access_token_url, authorize_url); try { provider.retrieverequesttoken(consumer, oauth.out_of_band); log.d("tokens" , consumer.gettoken() + " -- " + consumer.gettokensecret()); } and request tokens. dont know how bypass next step. tried directly accessing accesstoken (stupid of me) provider.retrieveaccesstoken(consumer, "mycallback://callback"); no luck, ends in oauth.signpost.exception.oauthnotauthorizedexception: authorization failed (server replied 401). ...
Read more

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: mockito -

getting error org.mockito.exceptions.misusing.invaliduseofmatchersexception: invalid use of argument matchers! 1 matchers expected, 2 recorded. exception may occur if matchers combined raw values: //incorrect: somemethod(anyobject(), "raw string"); when using matchers, arguments have provided matchers. example: //correct: somemethod(anyobject(), eq("string matcher")); at when( getprogramservice .callservice(any(getprogramtype.class))) .thenreturn(jaxbresponse); please explain error , possible resolution the code posted looks fine; don't see problem it. code before or above causing exception. key here: invalid use of argument matchers! 1 matchers expected, 2 recorded. any , used above, doesn't return "special kind of null" or "special kind of getprogramtype"; don't exist. instead, returns null , side effect puts matcher on stack. whe...
Read more

google shop client API returns 400 bad request error while adding an item -

i'm working on solution add items in google shopping market java application. following tutorial real mess because of missing classes of laste release, after setting 1.5-beta maven managed make base example typecheck correctly classes. still can make simple task of adding 1 item. instead of posting whole code i'm posting part creates product feed. private product createproduct(string id) { product product = new product(); product.title = "red wool sweater"; product.content = new content( "text", "comfortable , soft, sweater keep warm on " + "cold winter nights. red , blue stripes."); product.appcontrol = new appcontrol(); product.appcontrol.addrequireddestination("productads"); product.externalid = id; product.lang = "it"; product.country = "it"; product.condition = "nuovo"; product.price = new price("eu...
Read more