[JDEV] Sending files through server...

[Waster_ <waster@iname.com>]

I have ideas about sending files through server.....

1) Request : User jenny wants to send file named "filename.ext" sized 10 Kbytes (10240 bytes)

<message>
    <from>jenny</from>
    <say>Hey, I&apos;m sending you this file</say>
    <thread>srgh5we3d</thread>

    <ext>
        <filesend type="fast|replied" name="filename.ext">
            <packet>request</packet>
            <size>10240</size>
        </filesend>
    </ext>
</message>

#thread should be a mixed form of unix time (only seconds), file name, and size, so that it wouldn't be the same as other file sends etc.

# In EXT:
# type can be "fast" or "replied".
# In "replied" form, sender waits acknowledgement after each packet sent
# In "fast" form, sender sends each packet without waiting for acknowledgement
# packet can be "request", "end", "cancel" or a number showing the number of the packet
#
# size is the file's size in bytes

2) Re: Request : User alican accepts file

<message>
    <from>alican</from>
    <thread>srgh5we3d</thread>

    <ext>
        <filesend name="filename.exe">
            <packet>request</packet>
            <accept>true|false</accept>
        </filesend>
   </ext>
</message>

# thread is the same as the above
#
# In EXT:
# accept can be "true" or "false"...
# part is still "request"
# filename is sent back for avoiding problems (there can still be the same thread)

3) Send: User jenny begins sending

<message>
    <from>jenny</from>
    <say>Sending file: filename.ext</say>
    <thread>srgh5we3d</thread>

    <ext>
        <filesend name="filename.ext">
            <packet>1</packet>
            <data>File data here...</data>
        </filesend>
    </ext>

# thread is the same...
#
# In EXT:
# packet: the number of the packet being sent. In every packet, this will be increased...
# name: Am I too afraid of thread problems?
# Filedata: The data in the packet

4) Acknowledgement : User alican acknowledges the packet. Only in "replied" form...

<message>
    <from>alican</from>
    <thread>srgh5we3d</thread>

    <ext>
        <filesend name="filename.ext">
            <packet>1</packet>
            <recevied>Number_Of_Bytes</received>
        </filesend>
    </ext>
</message>

# I won't say "thread is the same"
#
# In EXT:
# packet: The packet number that receiver acknowledges
# name: OK, I'm too afraid of thread problems...
#
# Number_Of_Bytes: Number of bytes received in the packet. Must be an unsigned-integer. If it isn't equal with sent
# bytes or if it's non-unsigned-integer, packet would simply re-sent

5) End of filesend: User jenny says, it finished sending....

<message>
    <from>jenny</from>
    <thread>srgh5we3d</thread>

    <ext>
        <filesend name="filename.ext">
            <packet>end</packet>
            <size>10240</size>
        </filesend>
    </ext>
</message>

# packet would be "end" showing file is complete...
# size and filename are sent again. If the receiver thinks he/she's getting abc.txt, but
# in the last packet, he/she sees that it's another file, he/she simply kills the sender ;)


6) Cancel sending/receiving : If one of the clients cancel sending/receiving then should send this message:

<message>
    <from>jenny|alican</from>
    <thread>srgh5we3d</thread>

    <ext>
        <filesend name="filename.ext">
            <packet>cancel</packet>
        </filesend>
    </ext>
</message>

----------------------------------------------------------------------------------------------------------------
NOTES:

- Sender will decide packet size. It desn't have to be the same in each packet.
- If a packet acknowledgement is wrong (the recipient recieved wrong num of bytes),
   simply the packet would be resent...
- Sender can send packets randomly: like 1-4-2-3... But the problem is how the
   recipient would solve the puzzle? ;) Ok, Ok, just a joke, sender should send packets in
   order. I don't wanna get mad in front of "ncedit.exe" (tm).
- If a packet number is received twice then the recipient should replace the old packet with
   the new one...
- In "replied" form, the sender shouldn't send new packet until it gets acknowledgement.
- In replied form, recipient SHOULDN'T append last packet to the file until sender sends
  another packet. Because if the packet is wrong received, sender would resend it...

--------------
QUESTIONS:

1) Who are Jenny and Alican?