socket problem,,,,, plz help

[green]

my problem is

I have socket between server and a client
the client sending data to the server, so the server respond to the client with the response
this my code for receive the response data
----------------------------------------------------------
os.write(getAut henticationRedG reenInfoString( ));
os.flush();
Thread.sleep(30 00);
DataInputStream is = new DataInputStream (mySocket.getIn putStream());
int rr;
int nn = is.available();
if(nn > 0)
{
byte[] bb = new byte[100000];
rr = is.read(bb); // rr is Number of read bytes
}

look to the code, u can notice that i have 2 variables nn and rr
nn is the avialbe bytes in the InbutStream and
rr is the nubmer of byes did read from the InbutStream.

when i make a debug , nn = 8192 and rr = 22233 !!!!!!!!!!!!!


the question is HOW can I read _ALLl _ the received data from the InbutStream

waiting ur help

[JosAH]

the question is HOW can I read _ALLl _ the received data from the InbutStream

You can't know that because you have no control of the sending party. The available()
method returned 8192 because that seemed to be the size of the underlying buffer
and it was full of data already. Then you gave it a 100,000 byte size buffer and 22,000
and then some were filled. That's the amount of bytes your read() call managed to
read.

You have to come up with some sort of 'protocol' between the sending party and the
receiving party, e.g. first the number of bytes to be send is send and then the data is
pushed over the line. Otherwise your receiving end doesn't know how many bytes are
being send over the line.

kind regards,

Jos

[green]

many thanks for u and for ur valuable time
---------------------------------------------------------------
so I tried to get all the data by looping with the InputStream, but I get another problem


[code=java]
os.write(getAut henticationRedG reenInfoString( ));
os.flush();
Thread.sleep(30 00); // must sleep a while to get the server response
DataInputStream is = new DataInputStream (mySocket.getIn putStream());
int i,r;
byte [] finalByteArray = new byte[70000];
int finalLength;
int nn = is.available();
if(nn > 0)
{
byte[] bb = new byte[30000];
r = is.read(bb);//,0,bb.length);
System.arraycop y(bb, 0, finalByteArray, 0, r);
finalLength = r;
r = is.read(bb);
if(r >0)
{
System.arraycop y(bb, 0, finalByteArray, finalLength , r);
finalLength += r;
r = is.read(bb);
}
}
returnString = decryptReturned Response(finalB yteArray);
System.out.prin tln(returnStrin g);[/Code]

this code get all the received data..
but in the second receive I get a socket write error Exception

so
plz help me

[JosAH]

many thanks for u and for ur valuable time
---------------------------------------------------------------
so I tried to get all the data by looping with the InputStream, but I get another problem


[code=java]
os.write(getAut henticationRedG reenInfoString( ));
os.flush();
Thread.sleep(30 00); // must sleep a while to get the server response
DataInputStream is = new DataInputStream (mySocket.getIn putStream());
int i,r;
byte [] finalByteArray = new byte[70000];
int finalLength;
int nn = is.available();
if(nn > 0)
{
byte[] bb = new byte[30000];
r = is.read(bb);//,0,bb.length);
System.arraycop y(bb, 0, finalByteArray, 0, r);
finalLength = r;
r = is.read(bb);
if(r >0)
{
System.arraycop y(bb, 0, finalByteArray, finalLength , r);
finalLength += r;
r = is.read(bb);
}
}
returnString = decryptReturned Response(finalB yteArray);
System.out.prin tln(returnStrin g);[/Code]

this code get all the received data..
but in the second receive I get a socket write error Exception

so
plz help me

That code doesn't make sense. As I wrote in my previous reply: your receiver
can't know if it read all the data. A simple second attempt to read some more
doesn't solve it either. You'd need a third, fourth etc. attempt and you still
wouldn't know if you'd read it all. You definitely need a little 'protocol', Make
your sender send the number of bytes it wants to send first, followed by those
bytes. Your receiver can anticipate on that: first it receives a number indicating
the number of bytes it should read afterwards.

kind regards,

Jos