Programmation C++ RSocketServ => Accept ?

Hello,

I'm a student and i'm starting on symbian C++.
I'm working on a software whose is a socket server.
I read many examples on this subject but i don't have success...
I which to have a function "accept" whose wait a connection...=20
I use Symbian 2nd edition 3, for the nokia 6680 (Symbian 8.1a).

If you have an example whose run in 6680, I will be very happy :-)

Thanks!

Edited by: spotlessmind33 on 24-Jul-2008 11:15

Hi [~spotlessmind33]
,


try this:

RSocketServ mysocket;
TInt err =3D mysocket.Connect();
User::LeaveIfError(err);

// Start your protocol, UDP for instance
TProtocolDesc desc;
_LIT(KUdp, "udp");
err =3D mysocket.FindProtocol(KUdp(), desc);
User::LeaveIfError(err);
TRequestStatus stat;
mysocket.StartProtocol(desc.iAddrFamily, desc.iSockType, desc.iProtocol, st=
at);
User::WaitForRequest(stat);

the part "User::WaitForRequest(stat);" should be the method which "accept"=
whose wait a connection...

Regards,
jnm

Thank jnm,

but, i forgot to say : it's TCP protocol...

In conclusion, i have two applications which exchange datas by socket, and =
the application in C++ is a server.
The second application is a J2ME application on the same symbian device.

Thanks

I don't know if this work with symbian os 8.1a, but you can try this:

TInt err;
RSocketServ ss;
RSocket sock;

err =3D ss.Connect();
err =3D sock.Open(ss, KAfInet, KSockStream, KProtocolInetTcp);
// ... now connect to the socket to send and receive data

From the documentation:
<div class=3D"Head3">h3. TCP
</div>
<div class=3D"Bodytext">
<code>RSocket::Recv()</code> and <code>RSocket::Read()</code> attempt to re=
ad=20
the amount of data set by the size of the passed descriptor. These function=
s=20
only complete when the descriptor is filled, or when the connection closes.=
If=20
the descriptor is filled, the amount of data read is passed back in=20
<code>aLen</code>. If the connection closes, the descriptor does not contai=
n any=20
data, and <code>aLen</code> should be ignored.


<code>RSocket::RecvOneOrMore()</code> completes as soon as any data is=20
available.

</div>
I hope this will help,
Regards,
jnm

Hi,
Thanks, but for doing a server, i don't need to this functions : listen/acc=
ept ?

I'm going to try your solution.

Thanks

Guillaume

Hi Guillaume,

Excuse my french.
Peste soit de ces clients serveurs, qu'ils pourrissent enfer, et ipv6 avec.

have a look here:
http://www.symbian.com/developer/tec...uide/Infrared=
-subsystem-guide/Infrared/IrDaSockets/IrDAGuide2/HowToIrDAPrimaryConnection=
..guide.html

in particular, this should be handy:
<code>addr.SetPort(home);
sock2.Bind(addr); // Binding to home port: home

addr.SetPort(remote); // Trying to connect to socket 2
test.Next(_L("Connect to socket"));// remote port: remote
sock2.Connect(addr,stat1); =20
User::WaitForRequest(stat1); // stat1 should return KErrNone

I hope this will help.
Regards,
Jean-No&euml;l

</code>

Hi,

I find something in :

engine-&gt;s.iSocket.Accept( engine-&gt;s.iBlankSocket, engine-&gt;s.iStatu=
s );
User::WaitForRequest(engine-&gt;s.iStatus);

And after the accept,=20
"engine-&gt;s.iStatus"is negative, it's normal ? if no, why ?
I find that because i have got "KERN-EXEC 0" like error....

Thanks

Guillaume

Hi,

a negative value can mean two things:
1) iStatus is set to KRequestPending (the documentation is great for this!=
)=20
<code>const TInt KRequestPending=3D(-KMaxTInt);
2)</code>iStatus return an system errorcode:
for example KErrGeneral (-2)

See the documentation:
<div class=3D"Head2">h2. <code>Accept()</code>
</div>
<div class=3D"Bodytext">Capability:=20
Dependent
on the type of socket so deferred to=20
PRT

<code>IMPORT_C void Accept(RSocket &aBlankSocket,=20
TRequestStatus &aStatus);</code>

h4. Description

Facilitates a client/server connection from a remote socket.


Extracts the first pending connection on a queue of sockets, the queue size=
=20
being previously specified by[Listen()|RSocketClass.html#%3a%3aRSocket%3a%=
3aListen%28%29|Sets up a socket to listen for incoming connections]. On suc=
cessful completion the blank socket is=20
given the handle of the new socket and it may then be used to transfer data=
..=20
After completion the accept socket may be used to make further connections =
with=20
new bla[Open()|RSocketClass.html#%3a%3aRSocket%3a%3aOpen%2 8%29|Opens a sock=
et by creating a new subsession to the socket server] on how to open a blan=
k so[Accept()|RSocketClass.html#%3a%3aRSocket%3a%3aAcce pt%28%29|Facilitates=
a client/server connection from a remote socket] may be used for protocols=
which do not have=20
the KSIConnectionLess flag in their protocol information.

h4. Parameters
<cod[RSocket|RSocketClass.html#%3a%3aRSocket|Provides a client endpoint to =
a protocol]=20
&aBlankSocket</code>

A socket opened as a blank socket.=20

<cod[TRequestStatus|../E32_EKA2/TRequestStatusClass.html#%3a%3aTRequestStat=
us|class TRequestStatus] &aStatus</code>

On completion, will contain an error code: see the=20
system-wide error codes

</div>
however, I'm not sure of what you are doing.

On Fri, 25 Jul 2008 14:04:44 +0100, spotlessmind33 wrote:

> Hi, I find something in : engine->s.iSocket.Accept(
> engine->s.iBlankSocket,
> engine->s.iStatus ); User::WaitForRequest(engine->s.iStatus); And after
> the
> accept, "engine->s.iStatus"is negative, it's normal ? if no, why ? I
> find that
> because i have got "KERN-EXEC 0" like error.... Thanks Guillaume

After the call to accept and before the call to User::WaitForRequest
iStatus should be KRequestPending - which is -KMaxTInt.



--
Alan Montgomery

/"\
\ / ASCII ribbon campaign
X against HTML mail
/ \ and postings - est. June 1998

Hi,

Okay for this value, but, now i use CActive :

------------
s.accept(blank,iAStatus);
setActive();
....
---------

But in my RunL, when it's after the function accept, iAStatus has got a -KM=
axTInt...
With this, i can't use Recv, why ? have you got a solution for waiting a ch=
angement of iAStatus and continu to execute the program in the great condit=
ion ?

Thanks!

Guillaume