serversocket - Java getInputStream Read not Exiting -

hi have created server socket reading byte array socket using getinputstream, getinputstream.read not exiting after endof data reaches. below code.

 class imagereciver extends thread {     private serversocket serversocket;     inputstream in;      public imagereciver(int port) throws ioexception    {       serversocket = new serversocket(port);    }       public void run()    {      socket server = null;      server = serversocket.accept();      in = server.getinputstream();      bytearrayoutputstream baos = new bytearrayoutputstream();     byte buffer[] = new byte[1024];      while(true){     int s = 0;     s = in.read(buffer); //not exiting here     if(s<0) break;     baos.write(buffer, 0, s);     }     server.close();          return;   }   }     

from client if sent 2048 bytes, line in.read(buffer) should return -1 after reading 2 times, waiting there read third time. how can solve ? in advance....

your server need close connection, basically. if you're trying send multiple "messages" on same connection, you'll need way indicate size/end of message - e.g. length-prefixing or using message delimiter. remember you're using stream protocol - abstraction stream of data; it's break see fit.

see "network packets" in marc gravell's io blog post more information.

edit: know have expected length, want this:

int remainingbytes = expectedbytes; while (remainingbytes > 0) {     int bytesread = in.read(buffer, 0, math.min(buffer.length, remainingbytes));     if (bytesread < 0) {         throw new ioexception("unexpected end of data");     }     baos.write(buffer, 0, bytesread);     remainingbytes -= bytesread; } 

note avoid overreading, i.e. if server starts sending next bit of data, won't read that.