[e-lang] Redirectories and captp://
list at waterken.net
Thu Sep 23 23:24:43 EDT 2004
So is PING_TIMEOUT = 20 seconds also a good value to use for the wait
time between checks of the Vat's IP address?
I suppose a related timeout is the time that a Vat waits before retrying
a connection. Is this application specific in E, or is there some retry
logic above VatTP in CapTP?
Bill Frantz wrote:
> At 10:29 PM -0700 9/20/04, Mark Miller wrote:
>>Tyler Close wrote:
>>>David Hopwood wrote:
>>>>Ah, OK. I don't think there's any way to do that without either polling,
>>>>or platform-dependent native code.
>>>That's my suspicion too.
>>>So what's the right polling period for E?
>>We can of course make this configurable, but we still need to choose a
>>How expensive to you expect the polling operation to be?
>>What is the time interval between VatTP keep-alives?
>>How long does it take for a VatTP connection to time out?
> * A fudge factor with which to multiply the timeouts for purposes of
> * debugging.
> //static private final long TIME_FUDGE = 1; //the normal value
> static private final long TIME_FUDGE = 60; //debug value
> /** The tick rate for the connection keep alive clock. Used in
> * conjunction with PING_SENDTIME and PING_TIMEOUT to ensure that the
> * connection is still in good working order. In milliseconds.*/
> static final long TICK_RATE = 15 * 1000 * TIME_FUDGE;
> /** The timeout for no messages received. When this timeout is exceeded,
> * we send a ping message. In milliseconds.*/
> static final long PING_SENDTIME = 20 * 1000 * TIME_FUDGE;
> /** The timeout for a ping. If we don't receive a message within this
> * time after we have sent a ping, we declare the connection down.
> * In milliseconds.*/
> static final long PING_TIMEOUT = 20 * 1000 * TIME_FUDGE;
> Cheers - Bill
> Bill Frantz | "So long as we govern our nation by the letter and
> (408)356-8506 | spirit of the Bill of Rights, we can be sure that our
> www.pwpconsult.com | nation will grow in strength and wisdom and freedom."
> | - Harry S. Truman
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