Sending file via GPRS

[minou]

Hi everybody,

i have a problem while sending a file of 11 kb size (size on the phone) from my Nokia 6680 to a my pc (server).
I receive on the server side a file of 8 kb, impossible to read of course and in which i have the first 1024 bytes (not equal to zero) and the rest of the bytes is equal to zero.

i think that the (FileConnection)Connector.open read the first 1024 of the file in the memory ... IS THAT TRUE ??

why i suppose that ?

because when i use the VIEW FILE option in my Midlet (which is the same as on the PDAPDemo on the wireless toolkit), it open a text file in which i have just few bytes written on 1 line ... so it can't be the whole file !!!!


Here is my code ....... PLEASE HELP ME ....

Best regards




private void send(String fileName) {

int length = 0;


// Connection to file
try {
fc = (FileConnection)Connector.open("file://localhost/" + currDirName + fileName);
if (!fc.exists()) {
throw new IOException("File does not exists");
}

fis = fc.openInputStream();

// Connection to server
sc = (SocketConnection) Connector.open("socket://MY IP:5000");



is = sc.openInputStream();
os = sc.openOutputStream();


byte[] b = new byte[1024];



do {
length = fis.read(b, 0, 1024);
os.write(b);
} while (length >= 1024);


fis.close();
fc.close();
stop();
} catch(IOException e) {}
}

[shmoove]

do {
length = fis.read(b, 0, 1024);
os.write(b);
} while (length >= 1024);

That's your problem. If you check the documentation for InputStream.read(byte[], int, int) you'll notice it says:

An attempt is made to read as many as len bytes, but a smaller number may be read, possibly zero.

So you shouldn't assume length will be 1024 as long as there is data avaiable. If we again look at the documentation for that method we'll see:

Returns:
the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

So what you need to do is change the last line of that segment to:

} while (length != -1);

shmoove

[minou]

many thanks for your fast reply,

i tried and it didn't work .. i received the same file on the server with the first 1024 bytes

i think that my problem is that my MIDLET can't read the whole file ... maybe the first 1024 bytes only ....

what can i do so it can read the whole file and then i can be able to send the whole file to the server ??

hint: is there a way to view a image (for example) inside the midlet PDAPDemo of the wireless toolkit ? :-)

Maybe this may help me ... but i am not sure ...

Kind regards,

[minou]

thanks a lot for your help I found the bug ..

when i send a text file it works ... but with an image it wasn't
which is normal because i have to use ImageIO.Read to create a buffered image and then I can write it in a file ...

Best Regards,

Minou