I'm currently implementing a tftp client which works with udp packets. I'm 
experiencing a really weird issue. I have an scenario where the server 
sends some packets in the same "group", then I acknowledge that group of 
packets. This group is called a window. When the window has a size of 6 or 
less packets the file transfer succeeds:

client............server
           <<    6 packets
1 ack   >>
           <<    6 packets
1 ack   >>
           ...

When I use a window size of 7 or bigger, the socket begins to work 
incorrectly, some packets are dropped/not emitted. Whilst the wireshark 
traffic capture clearly shows that the server sends X packets in a group, 
Node.js returns less than X.

An example (window size of 10):

This is what I receive in the node land:

client............server
           <<    packet1
           <<    packet2
           <<    packet3
           <<    packet4
           <<    packet5
           <<    packet6
           <<    packet7

And this is what wireshark is capturing:

client............server
           <<    packet1
           <<    packet2
           <<    packet3
           <<    packet4
           <<    packet5
           <<    packet6
           <<    packet7
           <<    packet8
           <<    packet9
           <<    packet10

Any ideas? I can prepare some wireshark captures with different window 
sizes and what I receive in node.js if this can help.

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