java - Getting a list of servers listening on a specific port in android -


i'm developing android app used remote control pc android phone. managed develop functional app (client , server(java) app) except have specify client on ip connect. both client , server opening socket , listening on port 8998. there way of getting list of servers (on client side) listening on specific port?

thank in advance,

kristian 

    try {          inetaddress serveraddress = inetaddress.getbyname(constants.server_ip); // getting inet adress of server         networkinterface netinterface = networkinterface.getbyinetaddress(serveraddress); // getting interface name other servers should         enumeration<inetaddress> addresses = netinterface.getinetaddresses();          (inetaddress inetaddress : collections.list(addresses)) {              out.println("inetaddress: " +  inetaddress);             log.d("adresses", string.valueof(inetaddress));         }      }catch(ioexception e){         log.e("err", "unknown hostname!");     }

is there way of getting list of servers (on client side) listening on specific port?

iterate on relevant ip addresses , see if can connect on port each of them. decide algorithm "all relevant ip addresses", though common 1 check on /24 subnet (e.g., if device's ip address 192.168.1.57, check 192.168.1.* addresses except 57).


Comments

Post a Comment

Popular posts from this blog

c# - Validate object ID from GET to POST -

i have method allows user access comment have made on site. have post method lets them update comment. my normal solution send entire comment model through, let them update it, update on database when post back. involve sending commentid through in hiddenfor , can manipulated. how can verify commentid sent in get method same i'm getting in post , not able alter comment wish? how can verify commentid sent in method same i'm getting in post? basically have validate following things in post - user logged-in user. authenticated users post comments. commentid in post , should valid commentid , should present in database. userid associated logged-in user should same userid associated comment . comment should contain userid column, can check @ time of update. to make sure update happens comment has been sent in get - hold commentid in session , in post action compare commentid value in session .
Read more

node.js - Custom Model Validator SailsJS -

when using custom model validator checks record within model. return within spread doesn't seem end control flow. //post.js model /** * custom validator **/ types: { isuservalid: function(user_id) { var promise = require('bluebird'); promise.all([ user.findone({id: user_id}) ]) .spread(function(user) { console.log(user); if (user === null || user === undefined) { console.log('failed'); return false; }else{ console.log('passed'); return true; } }); } }, my response standard validation failed response. { "error": "e_validation", "status": 400, "summary": "1 attribute invalid", "model": "post", "invalidattributes": { "owner": [ { "rule": "isuservalid", ...
Read more

php - Find a regex to take part of Email -

i have following emails need extract part from: bestellnummer xxx: 1 von xxx, 1er pack ------------- anfang der nachricht ------------- foo bar baz foo bar baz // <<<<< need text here ------------- ende der nachricht ------------- ------------- anfang der nachricht ------------- foo bar baz foo bar baz ------------- ende der nachricht ------------- there 0 unlimited occurences of ------------- anfang der nachricht ------------- ------------- ende der nachricht ------------- and i'm able extract first part regex: $re = "/------------- .*? -------------.?(.*?).?------------- .*? -------------/s"; but, i'm quite new on learning regex, i'm pretty sure there must better regex extract part (foo bar baz foo bar baz) of text between ------------- anfang der nachricht ------------- ------------- ende der nachricht ------------- as can in different languages, i'm using .? to match between hyphens. i...
Read more