It is the 2nd parameter because if I call in the java intelij debugger srtp_create(session, null) it works.

I did print the policy .... it is not null & the deprecated field == null so it cannot be that bad param.

I do call:

libSrtp.srtp_crypto_policy_set_rtp_default(rtpCryptoPolicy);

libSrtp.srtp_crypto_policy_set_rtp_default(rtcpCryptoPolicy);

I did look at the 'C' code and unless I miss something I think I got the correct values and srtp_valid_policy should not fail with BAD_PARAM there. Then, I did:

rtpCryptoPolicy.setSec_serv(SrtpSecServ.sec_serv_conf_and_auth.getValue()); // I was unable so far to map the enum with jna thus I used the enum - int conversion

rtcpCryptoPolicy.setSec_serv(SrtpSecServ.sec_serv_none.getValue());

final var srtpPolicy = new srtp_policy_t();

srtpPolicy.setAllow_repeat_tx(0);

srtpPolicy.setRtp(rtpCryptoPolicy);

srtpPolicy.setRtcp(rtcpCryptoPolicy);

srtpPolicy.setKey(srtpKey);

srtpPolicy.setWindow_size(128);

So far - I think I match the +/- same steps as the test/rtpdecoder.c

But then the session is created when 1st rtp pkt is received:

session = new srtp_ctx_t.ByReference();

final var srtpSsrc = new srtp_ssrc_t(0); // I used the ssrc from the rtp pkt - same error. By default the constructor is setting type to: SrtpSsrcType.ssrc_any_inbound.getValue();

srtpPolicy.setSsrc(srtpSsrc);

final var srtpErrStatus = libSrtp.srtp_create(session, srtpPolicy);

I'm getting BAD_PARAM ....Calling manually in the debug libSrtp.srtp_create(session, null); gives OK ....

I just noticed that there is a: srtp_set_debug_module method but when I used it I get fail as status code. I'm trying to see if I can activate that and hope it might print some useful info

On Thursday, June 15, 2023 at 03:53:41 p.m. EDT, Paul E. Jones <paulej@packetizer.com> wrote:

Do you mean this?

https://github.com/cisco/libsrtp/blob/main/srtp/srtp.c#L2975

Is the first parameter NULL?

The call to srtp_valid_policy() can also return that here:

https://github.com/cisco/libsrtp/blob/main/srtp/srtp.c#L326

Or are you making another call that is failing? In any case, the best way to find it is to read the C code to see what conditions return that result.

Paul

------ Original Message ------

From "lmcdasi--- via libsrtp" <libsrtp@lists.packetizer.com>

To "libsrtp@lists.packetizer.com" <libsrtp@lists.packetizer.com>

Date 6/15/2023 2:25:32 PM

Subject [libsrtp] Q: libsrtp debug

I'm trying to use the library in java. I have wrote all jna mapping's required. When the code is executing create_session I'm getting SRTP_ERR_STATUS_BAD_PARAM

I do not see where my error is & enabling logs in the library may help.

Any suggestions ? Thx.