"All of these functions may be made use of by simply linking the static libsctp-library to an application,

all incoming packets with the IP protocol id byte set to 132 (=SCTP). For this, it is necessary that an

application using the library functions have privileges to do so. On most Unix machines that means this

application has to be run by root (i.e. be made setuid 0)."

After examining the adaption.c file I believe that this is the case also when the macro SCTP_OVER_UDP is set.

Since Android does not allow opening of raw socket, i don't think sctplib can be used on Android

without rooting the Android device.

I haven't heard about usrsctp before, but will take a look at it! 

Does it provide the same functionality as sctplib?

Do you know if it has been tested on Android before?

Best Regards,

Dag Ove,

Norway

> Subject: Re: [SCTP-Discussion] Sctplib on Android
> From: Michael.Tuexen AT micmac.franken.de
> Date: Wed, 26 Feb 2014 12:40:53 +0100
> CC: sctp-discussion AT sctp.de
> To: daggy2k AT hotmail.com
>
> On Feb 26, 2014, at 11:25 AM, Dag Ove <daggy2k AT hotmail.com> wrote:
>
> > Hello,
> >
> > I am trying to enable SCTP over UDP using the sctplib-1.0.15 as a native library in an Android app, using Androids Native Development Kit (NDK). The installation works since the Android kernel is Linux, but when I call the function "sctp_initLibrary();" I get in return " 1 - adaptation error ". The reason for this is that the function "adl_open_sctp_socket" fails and returns -1 when trying to create a raw socket "sfd = socket(af, SOCK_RAW, IPPROTO_UDP"
> > Opening raw sockets in Android is not permitted unless having root access/superuser, and I don't want to root.
> >
> > My question is: Is it possible to use the sctplib-1.0.15 to send SCTP-over-UDP without having root or superuser?
> Im not sure why a raw socket is used. For SCTP/UDP you only need UDP sockets.
> You can have a look at usrsctp, which is the FreeBSD stack running in userland,
> which does it like that. See
> http://code.google.com/p/sctp-refimpl/source/browse/#svn%2Ftrunk%2FKERN%2Fusrsctp
>
> Best regards
> Michael
> >
> > Best Regards,
> > Dag Ove,
> > Norway
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>