bytes transmision problem trough sockets

[Raywall]

I have to send a gif from a client to server.
I have used sockets and DataInputStream and PrintWriter to stream the data.
The problem is that the server recives incorect data; a few bytes are not recognized.This is the source gif sent by the client:
//****************************************
GIF89a2 2 ³ RPPÅÄÄ}||·¶¶ÔÓÓ`^^¨§§&$$522ââ⌊ŠCAAommš˜˜ÿÿÿ!ù , 2 2 ðÉI«½8ëÍ»ÿ`(Ždižhª®lë¾p,Ïtmßx®ï|ïÿÀ pH,?Èaá<Š\!? €PÚ€P rÄà Dw‡†•
HœqЊÁ &S|8
 w7 t‹I”•–—˜™ ;
//****************************************
And this is what the server recives:
//***************************************
GIF89a2 2 ³ RPPÅÄÄ}||·¶¶ÔÓÓ`^^¨§§&$$522âââ???CAAomm???ÿÿÿ!ù , 2 2 ðÉI«½8ëÍ»ÿ`(?di?hª®lë¾p,Ïtmßx®ï|ïÿÀ pH,?Èaá<?\!? ?PÚ?P rÄà Dw???
H?qÐ?Á &S|8
 w7 t?I?????? ;
//***************************************
Notice the last bytes from the recived transmision: t?I?????? .
Please tell me why is this happening. Should i send the data using byte transmision instead of the PrintWriter.println() method?
Thanks in advance.

 

[timw]

Should i send the data using byte transmision instead of the PrintWriter.println() method?

I reckon so.

Tim
---------------------------
"Your morbid fear of losing,
destroys the lives you're using." - Ozzy

 

[sedj]

You can't send byte data using an stream to send ASCII characters !!!

Use a DataOutputStream.

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[Raywall]

my bad sedj i admit.
The thing is the I implemented a chat and for that println worked just fine. And now i had to add this last feature and i hoped i won't be forced to change the transmision method.
Guess I was wrong..

 

[sedj]

Its easy to recreate a PrintWriter.println() call :

byte[] newLineBytes = "\n".getBytes();
DataOutputStream dos ...

dos.write(newLineBytes);
dos.flush();

Thats basically all it does ...

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[Raywall]

ok i make the transmision corect.
But now i think that i have to read from the file(the gif) the same way(byte rows) and i don't know how...

 

[sedj]

You can read a file like this :

File f = new File("mygif.gif");
byte[] data = new byte[(int)f.length()];
FileInputStream fis = new FileInputStream(f);
f.read(data);
fis.close();

// data now contains your gif.

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[Raywall]

Ohh i finnaly made it. Ty for your help sedj.