From: matthewf@msexchange2k.closedtest.intra
To: matthewf@msexchange2k.closedtest.intra
Subject: test_9
Date: Sun, 23 May 2004 17:35:32 +0530
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Internet access on the Nokia 9200 Series Communicator is necessarily limited
by the speed of the phone's GSM connection. As a consequence, testing and
debugging Internet-based applications on hardware can be both expensive and
tedious. The RAS IAP application alleviates this problem by enabling you to
connect to the Internet over a much faster serial connection, via your PCThe
application demonstrates how the Symbian OS Communications database (CommDb)
API may be used to configure an Internet Access Point (IAP). To some extent
it also shows the common paradigm for using most DBMS derived APIs.An
Internet Access Point defines ISP, modem, charge card and location records
that can be used together to make an Internet connection. The IAP for the
RAS connection specifies an ISP and modem record (charge card and location
records are required for this type of IAP). The CommDb is a standard DBMS
database. Modems, ISPs, charge cards, locations, IAPs etc are all stored in
their own tables within the database. There may be a number of records
within each table (e.g., there may be a number of IAPs, modems, ISPs, etc.).
As described in the preceding section, each IAP record defines the set of
ISP, modem, charge card, and location that can be used together. In other
words, an IAP record defines a set of records the other tables.The
implication of the above statement is that sets of CommDb records are
accessed through their associated table. The other implication is that you
cannot create an IAP record until you have already created the other
records. Finally, the fact that there may be many records in a table implies
that each record must be uniquely identified.2. Copy an existing CommDb that
has a correctly configured IAP. This method "works", but has several
problems. Firstly, Symbian does not guarantee that the CommDb will be binary
compatible between releases. In practice this has not been an issue, but it
is something to keep in mind. Secondly, while you are using your RAS IAP,
you don't have access to IAPs you configured in the "real" CommDb. Finally,
and most importantly, CommDb configuration should be targeted to the
platform; The CommDb that you use for RAS connections may well disable some
of your other phone services.. Add an IAP to your existing (proven) CommDb
using RAS IAP. The advantage of this method is that you get to retain the
CommDb that your manufacturer put onto the phone, and therefore can expect
the device to continue to work with the new IAP! Also, the CommDb API is
binary compatible between releases, so you can rely on this method as you
change phone. It is also by far the simplest method! Rather than coding the
application from first principles, I used the standard Minimal Eikon
Application Developer (MEAD) and Menu Builder tools to create an application
that I could easily customize. I then modified the engine to write to the
CommDb, and the UI to call the engine as appropriate. Each of these exports
calls non-exported functions to actually implement the creation and deletion
of the components of the IAP
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Internet access on the Nokia 9200 Series Communicator is necessarily =
limited by the speed of the phone's GSM connection. As a consequence, =
testing and debugging Internet-based applications on hardware can be =
both expensive and tedious. The RAS IAP application alleviates this =
problem by enabling you to connect to the Internet over a much faster =
serial connection, via your PCThe application demonstrates how the =
Symbian OS Communications database (CommDb) API may be used to configure =
an Internet Access Point (IAP). To some extent it also shows the common =
paradigm for using most DBMS derived APIs.An Internet Access Point =
defines ISP, modem, charge card and location records that can be used =
together to make an Internet connection. The IAP for the RAS connection =
specifies an ISP and modem record (charge card and location records are =
required for this type of IAP). The CommDb is a standard DBMS database. =
Modems, ISPs, charge cards, locations, IAPs etc are all stored in their =
own tables within the database. There may be a number of records within =
each table (e.g., there may be a number of IAPs, modems, ISPs, etc.). As =
described in the preceding section, each IAP record defines the set of =
ISP, modem, charge card, and location that can be used together. In =
other words, an IAP record defines a set of records the other tables.The =
implication of the above statement is that sets of CommDb records are =
accessed through their associated table. The other implication is that =
you cannot create an IAP record until you have already created the other =
records. Finally, the fact that there may be many records in a table =
implies that each record must be uniquely identified.2. Copy an existing =
CommDb that has a correctly configured IAP. This method "works", but has =
several problems. Firstly, Symbian does not guarantee that the CommDb =
will be binary compatible between releases. In practice this has not =
been an issue, but it is something to keep in mind. Secondly, while you =
are using your RAS IAP, you don't have access to IAPs you configured in =
the "real" CommDb. Finally, and most importantly, CommDb configuration =
should be targeted to the platform; The CommDb that you use for RAS =
connections may well disable some of your other phone services.. Add an =
IAP to your existing (proven) CommDb using RAS IAP. The advantage of =
this method is that you get to retain the CommDb that your manufacturer =
put onto the phone, and therefore can expect the device to continue to =
work with the new IAP! Also, the CommDb API is binary compatible between =
releases, so you can rely on this method as you change phone. It is also =
by far the simplest method! Rather than coding the application from =
first principles, I used the standard Minimal Eikon Application =
Developer (MEAD) and Menu Builder tools to create an application that I =
could easily customize. I then modified the engine to write to the =
CommDb, and the UI to call the engine as appropriate. Each of these =
exports calls non-exported functions to actually implement the creation =
and deletion of the components of the IAP
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