<div dir="ltr"><div>On Fri, Nov 25, 2016 at 9:53 PM, Jim Alles <span dir="ltr"><<a href="mailto:kb3tbx@gmail.com" target="_blank">kb3tbx@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><font face="georgia, serif"></font><span style="font-family:georgia,serif">This test, from </span><a href="http://www.aprs-is.net/IGateDetails.aspx" target="_blank" style="font-family:georgia,serif">http://www.aprs-is.net/<wbr>IGateDetails.aspx</a><span style="font-family:georgia,serif">:</span></div><div><span style="font-family:"times new roman";color:rgb(0,0,0)">"the receiving station has not been heard via the Internet within a predefined time period."</span><span style="font-family:"times new roman";color:rgb(0,0,0)"> </span></div><div><span style="color:rgb(0,0,0)"><font face="georgia, serif">seems to have lost it's context.</font></span><br></div><div>[...]</div><div><span id="gmail-m_-6007344391327231517gmail-docs-internal-guid-7724b27b-9ee7-2ee6-7cfe-6b44096a2e75"><div style="font-size:x-small"><font color="#000000" face="arial"><span style="white-space:pre-wrap"><br></span></font></div><div><font color="#000000" face="georgia, serif"><span style="white-space:pre-wrap">It appears to me that if the former rule above is applied literally and too broadly, then only the first IGate </span></font><span style="color:rgb(0,0,0);font-family:georgia,serif;white-space:pre-wrap">hearing the destination station </span><span style="white-space:pre-wrap;color:rgb(0,0,0);font-family:georgia,serif">has a chance of transmitting. </span></div></span></div></div></blockquote><div><br></div><div>As the sentence ironically right after the one you quoted says:</div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium">A station is said to be heard via the Internet if packets from the station contain TCPIP* or TCPXX* in the header or if gated (3rd-party) packets are seen on RF gated by the station and containing TCPIP or TCPXX in the 3rd-party header (in other words, the station is seen on RF as being an IGate).</span></blockquote><div><br></div><div>So no, there is no race condition. If you're seeing packets from a station with TCPIP* in the header, they're connected to the APRS-IS directly and don't need your RF-gate services. If you're seeing packets via the APRS-IS from an RF-only station which were I-gated by other stations, it would not have TCPIP* in the header.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><span id="gmail-m_-6007344391327231517gmail-docs-internal-guid-7724b27b-9ee7-2ee6-7cfe-6b44096a2e75"><div><span style="white-space:pre-wrap;color:rgb(0,0,0);font-family:georgia,serif">Another operational concern is interpretation of whether it just the callsign or the CALL+SSID that is used in the test at the IGate client, since we now have mobile devices that are only heard on the Internet, while the same operator may be running a transceiver with a different SSID. They should both get each others message, regardless that the Internet connected device is not RF.</span></div></span></div></blockquote><div><br></div><div>Where did did you get this from? Every BaseCallsign-SSID station callsign is a unique identifier and should be handled separately. I think some software will notify you if they happen to see messages for other SSIDs of the same base callsign, but I find the feature annoying </div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><span id="gmail-m_-6007344391327231517gmail-docs-internal-guid-7724b27b-9ee7-2ee6-7cfe-6b44096a2e75"><div><span style="color:rgb(0,0,0);font-family:georgia,serif;white-space:pre-wrap">If a message is destined for a Internet-only client, and an RF station with the same callsign is heard elsewhere, the RF remote should also get a copy of the message, due to the common callsign.</span></div></span></div></blockquote><div><br></div><div>No it shouldn't. Why should every station operating with my base callsign get a copy of every message destined for any of my stations? If I'm operating 15 digipeaters across the state and I send a command to one of them via APRS messaging, why should the other 14 get a copy of the message not meant for them?</div></div><div><br></div><div>The local RF-gate wouldn't know anything about the actual destination anyways, since it wouldn't have necessarily seen any packets from my other SSIDs, so there's no way to identify a different SSID station as "a Internet-only client". You're now talking about a change to not only RF-gates but the behavior of the APRS-IS 14580 port as well.</div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature">--<br>Kenneth Finnegan, W6KWF<br><a href="http://blog.thelifeofkenneth.com/" target="_blank">http://blog.thelifeofkenneth.com/</a></div></div>
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