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Seems to me that packet 4 isn't necessary either right - it is just designed to wait for it.
– Paul
Commented Apr 29, 2012 at 12:02
@Paul, that's sort of like saying "resume" isn't necessary after a "pause".
– Old Pro
Commented Apr 29, 2012 at 16:02
@OldPro, I'm not sure that waiting for 4° is a good idea, packets captured tend to get lost especially when they travel through the air.
– cYrus
Commented Apr 29, 2012 at 18:14
@cYrus, waiting for 4 is essential, as encryption keys have to be changed simultaneously on both sides. If the client doesn't receive 4, it doesn't know that the base received 3. If the client doesn't receive 4, it sends 3 again (which triggers a resend of 4) until it either receives 4 or gives up trying to create the connection.
– Old Pro
Commented Apr 29, 2012 at 18:20
@OldPro: I'm not talking about the protocol. Both sides can receive all the packets, but they might be dropped or not captured by the entity that passively captures the traffic.
– cYrus
Commented Apr 29, 2012 at 18:27

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Correct minor typos or mistakes
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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)
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[example](https://example.com)
<a href="https://example.com">example</a>

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