Sensor data buffered request

app.ino

void sendData(unsigned long timestamp, double speed) 
{   
    int success = 1;
    char request[256];
    char body[64];
 
    if(!client.connected())
    {
        success = client.connect(server, 5000);
    }

    if(success)
    {
        // Empty the buffer 
        // (I still don't really care about the response)
        while(client.read() != -1);

        // Clear the request data
        memset(request, 0, 256);
        // Clear the body data
        memset(body, 0, 64);        
        
        sprintf(body, "milliseconds=%lu&speed=", timestamp); 
        dtostrf(speed, 2, 3, &body[strlen(body)]);

        char* currentPos = request;

        // I'm using sprintf for the fixed length strings here
        // to make it easier to read.
        currentPos += sprintf(currentPos, "POST /data/providereading HTTP/1.1\r\n");
        currentPos += sprintf(currentPos, "Host: %s:%d\r\n", server, 5000);
        currentPos += sprintf(currentPos, "Connection: keep-alive\r\n");
        currentPos += sprintf(currentPos, "Content-Length: %d\r\n", strlen(body));
        currentPos += sprintf(currentPos, "Content-Type: application/x-www-form-urlencoded\r\n");
        currentPos += sprintf(currentPos, "\r\n");
        
        strcpy(currentPos, body);

        // Send the entire request
        client.print(request);

        // Force the wifi module to send the packet now
        // rather than buffering any more data.
        client.flush();
    }
}