I'm using SONY Wireless LAN Card PEGA-WL100...
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "Palm Developer Forum" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Monday, October 27, 2003 7:12 AM
Subject: Re: NetLib questions...
> Hi,
>
> I use NetLib receive and send with 200K files with no problem.
>
> what kind of connection do you use ? modem, cell phone ?
>
> Ricardo
> ----- Original Message -----
> From: "阿謙" <[EMAIL PROTECTED]>
> To: "Palm Developer Forum" <[EMAIL PROTECTED]>
> Sent: Monday, October 20, 2003 11:16 PM
> Subject: NetLib questions...
>
>
> > Hi! I'm using CW and NetLib to develop application that sends/receives
> files
> > to and from a java server.
> > I've come across a huge question that I've been working on to solve it
for
> > months. That is:
> >
> > 1. When receiving a file from the server, it seems impossible to receive
a
> > large file completly. I use for loop to re-receive the buffer that holds
> the
> > file on the server.
> > But the connection seems unstable. For example, I want to receive a
> file
> > sized 73681bytes. Most of the time, when I receive 7888 bytes, then it
get
> > stuck. And some times I can receive the file up to 46000 bytes. Why
> is
> > that!? It had been bothering me for a long time..... Here is a section
of
> my
> > code for receiving files.
> >
> > Boolean Receive_File()
> > {
> > MemPtr HTTPContent = MemPtrNew(4096);
> >
> > int flag = 1;
> > int loop = 1;
> > Boolean reconnect;
> > Err Receive_File_ErrorMsg;
> >
> > UInt32 filesize = NULL;
> >
> >
> > while(flag==1)
> > {
> > //*****************************************
> > // Check and print File Size
> > //*****************************************
> > VFSFileSize(fileRefP, &filesize);
> > char* size;
> > char f[3];
> > int line2=0;
> > size = StrIToA(f, filesize);
> > WinDrawChars("File Size:", strlen("File Size:"),40,30);
> > WinDrawChars(size, strlen(size),50,40+line2);
> > line2+=10;
> >
> > if((int)filesize == 73681)
> > {
> > flag =0;
> > reconnect = false;
> > }
> >
> > else
> > {
> > connect = NetLibReceive(libRefNum, sockfd, HTTPContent,4096,
> > 0,NULL, 0, timeout, &Receive_File_ErrorMsg);
> > if(connect == -1)
> > {
> > char* ErrorMessage;
> > ErrorMessage = NetLibReceive_ErrorMsg(Receive_File_ErrorMsg);
> > WinDrawChars("ERROR in NetLibReceive", strlen("ERROR in
> > NetLibReceive"),50,130);
> > WinDrawChars(ErrorMessage, strlen(ErrorMessage),0,140);
> > MemSet(HTTPContent, 4096, 0);
> > flag=1;
> >
> > //*****************************************
> > // Check how many times
> > //*****************************************
> > StrIToA(LOOP, loop);
> > loop++;
> > WinDrawChars("loop: ", 5,70,150);
> > WinDrawChars(LOOP, strlen(LOOP),100,150);
> >
> > if(loop>5)
> > {
> > flag = 0;
> > reconnect = true;
> > }
> >
> >
> > }//if(connect = -1)
> >
> > else if(connect == 0)
> > {
> > WinDrawChars("Connection Closed!", strlen("Connection
> > Closed!"),0,140);
> > flag = 0;
> > reconnect = false;
> > }
> > else // if there're incomming bytes
> > {
> >
> > file_err = VFSFileWrite(fileRefP,connect,HTTPContent, NULL );
> > MemSet(HTTPContent, 2048, 0);
> > reconnect = false;
> >
> >
> > }
> > }//end of else
> >
> > }//end of while loop
> > VFSFileClose(fileRefP);
> > MemPtrFree(HTTPContent);
> > return reconnect;
> > }
> >
> > 2. The second problem that I come across is that when sending a file to
> the
> > server, it works fine while the file size is 30k. But when sending a
JPEG
> > file that is 86.4k, the server did receive the file, but the actual byte
> > that received isn't correct. It's less than 86.4K and the tail of the
file
> > twisted. Can anyone please tell me what cause this happen...
> >
> > Here is a section of my code to send files.
> >
> > int line=0,flag=1, SEND_BUFFER_SIZE = 2048,sendByte = 0;
> > UInt32 numBytesRead;
> > Char byte[3];
> > MemPtr bufP_attach = MemPtrNew(SEND_BUFFER_SIZE);
> >
> > while(flag==1)
> > {
> > VFSFileRead (fileRefP_attach, SEND_BUFFER_SIZE, bufP_attach,
> > &numBytesRead);
> > if(numBytesRead == 0)
> > {
> > flag = 0;
> > break;
> > }
> > connect = NetLibSend(libRefNum, sockfd, bufP_attach,
> > numBytesRead,0,NULL,0,timeout*2,&err );
> > if(connect == -1)
> > {
> > flag = 0;
> > WinDrawChars("ERROR in NetLibSend", strlen("ERROR in
> > NetLibSend"),10,90);
> > NetLibSocketClose(libRefNum, sockfd, timeout, &err);
> > NetLibClose(libRefNum, 0);
> > }
> > MemSet(bufP_attach, SEND_BUFFER_SIZE, 0);
> > StrIToA(byte, connect);
> > WinDrawChars(byte, strlen(byte),100,line+=8);
> >
> > }
> >
> > WinDrawChars("File has been sent!",strlen("File has been
> sent!"),10,90);
> > VFSFileClose(fileRefP_attach);
> > free(bufP_attach);
> >
> >
> > Angela Chang
> >
> >
> >
> > ==========================================================
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> >
>
>
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