java - Simple client server program with local IP address -

i'm trying started basic client server stuff. have java server socket program running on 1 of computers. android phone running simple application , acting client. want phone able connect java program on computer.

the client tries connect computer's local ip address, can't connect. ioexception. here's android code i'm using:

        try {             echosocket = new socket("192.168.0.19", 7077);             system.out.println("length: "+ "socket created!");         } catch (unknownhostexception e) {             system.out.println("length: "+ "don't know host.");         } catch (ioexception e) {             system.out.println("couldn't i/o "                     + "the connection.");         } 

if run both client , server, on computer , try connect computer's local ip (same above), works fine. want connect phone.

any ideas need do?

edit: here's stack trace:

   07-21 15:37:34.223: w/system.err(3474): android.os.networkonmainthreadexception 07-21 15:37:34.223: w/system.err(3474):     @ android.os.strictmode$androidblockguardpolicy.onnetwork(strictmode.java:1117) 07-21 15:37:34.223: w/system.err(3474):     @ libcore.io.blockguardos.connect(blockguardos.java:84) 07-21 15:37:34.223: w/system.err(3474):     @ libcore.io.iobridge.connecterrno(iobridge.java:127) 07-21 15:37:34.223: w/system.err(3474):     @ libcore.io.iobridge.connect(iobridge.java:112) 07-21 15:37:34.223: w/system.err(3474):     @ java.net.plainsocketimpl.connect(plainsocketimpl.java:192) 07-21 15:37:34.223: w/system.err(3474):     @ java.net.plainsocketimpl.connect(plainsocketimpl.java:172) 07-21 15:37:34.223: w/system.err(3474):     @ java.net.socket.startupsocket(socket.java:566) 07-21 15:37:34.223: w/system.err(3474):     @ java.net.socket.tryalladdresses(socket.java:127) 07-21 15:37:34.223: w/system.err(3474):     @ java.net.socket.<init>(socket.java:177) 07-21 15:37:34.223: w/system.err(3474):     @ java.net.socket.<init>(socket.java:149) 07-21 15:37:34.223: w/system.err(3474):     @ com.nikhildev.cricketeye.mainactivity.startvideocamera(mainactivity.java:45) 07-21 15:37:34.223: w/system.err(3474):     @ java.lang.reflect.method.invokenative(native method) 07-21 15:37:34.223: w/system.err(3474):     @ java.lang.reflect.method.invoke(method.java:511) 07-21 15:37:34.223: w/system.err(3474):     @ android.view.view$1.onclick(view.java:3594) 07-21 15:37:34.223: w/system.err(3474):     @ android.view.view.performclick(view.java:4204) 07-21 15:37:34.223: w/system.err(3474):     @ android.view.view$performclick.run(view.java:17355) 07-21 15:37:34.223: w/system.err(3474):     @ android.os.handler.handlecallback(handler.java:725) 07-21 15:37:34.223: w/system.err(3474):     @ android.os.handler.dispatchmessage(handler.java:92) 07-21 15:37:34.223: w/system.err(3474):     @ android.os.looper.loop(looper.java:137) 07-21 15:37:34.223: w/system.err(3474):     @ android.app.activitythread.main(activitythread.java:5041) 07-21 15:37:34.233: w/system.err(3474):     @ java.lang.reflect.method.invokenative(native method) 07-21 15:37:34.233: w/system.err(3474):     @ java.lang.reflect.method.invoke(method.java:511) 07-21 15:37:34.233: w/system.err(3474):     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:793) 07-21 15:37:34.233: w/system.err(3474):     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:560) 07-21 15:37:34.233: w/system.err(3474):     @ dalvik.system.nativestart.main(native method) 

with android , sockets need watch out few things

1. android needs client, since ip address expected change more of server
2. the port number use should > 1024
3. if on emulator, need aware emulator's ip 10.something. android documentation.
4. permissions in manifest

lastly, issue running network api in main ui thread. need run same in async task. thats why getting strictmode exception thingy.

edit :

as ping, check if can ping network router. , if can ping outside world issue router blocking ping inside.