Namespaces

Variants
Actions

Please note that as of October 24, 2014, the Nokia Developer Wiki will no longer be accepting user contributions, including new entries, edits and comments, as we begin transitioning to our new home, in the Windows Phone Development Wiki. We plan to move over the majority of the existing entries over the next few weeks. Thanks for all your past and future contributions.

WISE Send Data

From Wiki
Jump to: navigation, search
Article Metadata
Article
Created: ebra (17 Jun 2008)
Last edited: hamishwillee (30 May 2013)

Contents

Description

The communication between two WISE devices is devided into two possibilities

When number is send or received the data size is always 5 bytes - the first byte is a control byte (always 'L') and the remaining 4 bytes represents a 32 bit integer is a little endian format.


The data is sent with 512 byte segments. After each segment 4 byte response is received.

Maemo Platform

#define WISE_SEND_BUFFER_SIZE 512
 
int wise_send_buffer(int socket,const char* data,int data_size)
{
int transmitted=0,total_sent=0,buffer_size=0;
const char* ptr = data;
char buf[10];
 
if ( data==NULL || logger==NULL ) return WISE_CONNECTION_ERROR;
 
/* send data size */
    if ( wise send int(socket,data size)!=WISE OK ) return WISE CONNECTION ERROR; 
/* initial buffer size */
if ( data_size < WISE_SEND_BUFFER_SIZE ) buffer_size = data_size;
else buffer_size = WISE_SEND_BUFFER_SIZE;
 
/* send data */
while ( total_sent<data_size )
{
transmitted = write(socket,ptr,buffer_size);
if ( transmitted < buffer_size ) return WISE_CONNECTION_ERROR;
 
total_sent += transmitted;
ptr += transmitted;
 
if ( total_sent + WISE_SEND_BUFFER_SIZE <= data_size )
{
buffer_size = WISE_SEND_BUFFER_SIZE;
}
else buffer_size = data_size - total_sent;
 
transmitted = read(socket,buf,4);
if ( transmitted<4 || strcmp(buf,"ACK")!=0 )
return WISE_CONNECTION_ERROR;
}
return WISE_OK;
}

S60 Platform

#define KWiseSendBufferSize 512
 
void CWISEBase::SendBufferL(RSocket& aSocket, const TDesC8& aData)
{
TRequestStatus status;
 
TInt bufferSize(0), totalSent(0), dataSize(aData.Length());
TBuf8<4> buffer;
TSockXfrLength len;
 
// send data size
    SendIntL(aSocket, dataSize); 
    // initial buffer size
if ( dataSize < KWiseSendBufferSize ) bufferSize = dataSize;
else bufferSize = KWiseSendBufferSize;
 
// send data
while ( totalSent < dataSize )
{
TPtrC8 ptr(aData.Mid(totalSent, bufferSize));
 
aSocket.Write(ptr, status);
User::WaitForRequest(status);
User::LeaveIfError(status.Int());
 
totalSent += bufferSize;
if ( totalSent + KWiseSendBufferSize <= dataSize )
{
bufferSize = KWiseSendBufferSize;
}
else bufferSize = dataSize - totalSent;
 
aSocket.RecvOneOrMore(buffer, 0, status, len);
User::WaitForRequest(status);
User::LeaveIfError(status.Int());
}
}

Links

This page was last modified on 30 May 2013, at 06:39.
118 page views in the last 30 days.

Was this page helpful?

Your feedback about this content is important. Let us know what you think.

 

Thank you!

We appreciate your feedback.

×