TCP connection Socket.getInputStream()

Question

I created an application which establishes connection with the given port and transport data either ways. But I am having issues in reading the data from the server.

try{

    Socket skt = new Socket(127.98.68.11, 1111); // connecting to this to get data

    String message = "some test message";

    if(option.equalsIgnoreCase("send")){

         OutputStream outToServer = skt.getOutputStream();
          outToServer.write(message); // this is working, message stored on server-side
    }else if(option.equalsIgnoreCase("receive")){
          BufferedReader in = new BufferedReader (new InputStreamReader(sit.getInputStream()));

          String fromServer = in.readLine();
          System.Out.Println(fromServer);
    }

}catch(IOException io){
   io.printStackTrace();
}

In this program everything is working as expected. except in.readline().

I tried running this program in debugging mode, and the by the time compiler reaches this command. is was doing nothing and i can't see the cursor also

What do you expect to happen ? It sounds like your server isn't sending you a line, so debug what's happening on the server (and even on the TCP stream using e.g. Wireshark.) — nos
– nos, Commented Aug 3, 2011 at 20:04
Your BufferedReader is getting an input stream from a variable called sit but your Socket is declared with a name of skt. Is this a typo? — Hunter McMillen
– Hunter McMillen, Commented Aug 3, 2011 at 20:04
These typo errors were not in the actual code. my question is I'm not getting the stream of data or not even throwing any exception/errors. the program keeps running for hours and terminating without printing the expected stream of data — gmeka
– gmeka, Commented Aug 3, 2011 at 21:02

arun_suresh · Accepted Answer · 2011-08-03 20:05:02Z

1

It could be because you are trying to do an in.readLine() this requires that the server terminates the "receive" command which it is sending to the client with a newline.. "\n" or "\r\n" along

answered Aug 3, 2011 at 20:05

arun_suresh

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2 Comments

gmeka Over a year ago

does in.read() get the full string of data? can you tell how to get the data. because whatever read/readLine the program is terminating. how to get this work??

arun_suresh Over a year ago

in.read() will only retrieve a single character.. you need to use in.read(char[], int, int) method to read into an char buffer array. keep reading until you get a -1 after which you convert the buffer array to a String.. then check if this string.equalsIgnoreCase("receive")

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