PJSip Account Registration

Question

I am trying to add PJSip to a project I am working on. I have this method for registering my account but a 'Fatal signal 11' error occurs everytime.

Here is the method

public int setRegistration() {
    int status = pjsuaConstants.PJ_FALSE;
    /* Register to SIP server by creating SIP account. */
    int[] accId = new int[1];
    accId[0] = 1;

    String uName = getUserName();
    String passwd = getPassword();
    String server = getSIPServer();

    pjsua_acc_config acc_cfg = new pjsua_acc_config();
    pjsua.acc_config_default(acc_cfg);

    acc_cfg.setId(pjsua.pj_str_copy("sip:" + uName + "@" + server));
    acc_cfg.setReg_uri(pjsua.pj_str_copy("sip:" + server));
    acc_cfg.setCred_count(1);

    acc_cfg.getCred_info().setRealm(pjsua.pj_str_copy(server));
    acc_cfg.getCred_info().setScheme(pjsua.pj_str_copy("digest"));
    acc_cfg.getCred_info().setUsername(pjsua.pj_str_copy(uName));
    acc_cfg.getCred_info().setData_type(pjsip_cred_data_type.PJSIP_CRED_DATA_PLAIN_PASSWD.swigValue());
    acc_cfg.getCred_info().setData(pjsua.pj_str_copy(passwd));

    Log.d("status", "acc is adding..");
    status = pjsua.acc_add(acc_cfg, pjsuaConstants.PJ_TRUE, accId);
    Log.d("status", "acc is added");

    if (status == pjsuaConstants.PJ_SUCCESS) {
        status = pjsua.acc_set_online_status(accId[0], 1);
        Log.d("acc_set_online_status returned stauts=", String.valueOf(status));
    } else {
        Log.d("Error status=", String.valueOf(status));
    }
    return status;
}

I receive the error on the status = pjsua.acc_add(acc_cfg, pjsuaConstants.PJ_TRUE, accId); line. I know that the username, server, and password are not null. I have looked at multiple questions relating to this and no use.

How can I register my account?

Thanks

*****EDIT****** After tracking down this through blogs and forums I got passed this error but received another. The reason this error occurred was because pjsua_init was never successful. It was successful because it gave me this error

11-04 10:19:20.973: E/AndroidRuntime(2961): FATAL EXCEPTION: main
11-04 10:19:20.973: E/AndroidRuntime(2961): java.lang.UnsatisfiedLinkError: Native method not found: org.pjsip.pjsua.pjsuaJNI.init:(JLorg/pjsip/pjsua/pjsua_config;JLorg/pjsip/pjsua/pjsua_logging_config;JLorg/pjsip/pjsua/pjsua_media_config;)I
11-04 10:19:20.973: E/AndroidRuntime(2961):     at org.pjsip.pjsua.pjsuaJNI.init(Native Method)
11-04 10:19:20.973: E/AndroidRuntime(2961):     at org.pjsip.pjsua.pjsua.init(pjsua.java:812)

I have received this warning as well

No implementation found for native Lorg/pjsip/pjsua/pjsuaJNI;.init (JLorg/pjsip/pjsua/pjsua_config;JLorg/pjsip/pjsua/pjsua_logging_config;JLorg/pjsip/pjsua/pjsua_media_config;)I

Why isn't this a native method? I am looking into the libraries I have called but other than that I don't know why this isn't working.

Any help on this matter would be great. Thanks

PJ Code

pjsua.java

public synchronized static int init(pjsua_config ua_cfg, pjsua_logging_config log_cfg, pjsua_media_config media_cfg) {
   return pjsuaJNI.init(pjsua_config.getCPtr(ua_cfg), ua_cfg, pjsua_logging_config.getCPtr(log_cfg), log_cfg, pjsua_media_config.getCPtr(media_cfg), media_cfg);
}

pjsuaJNI.java

public final static native int init(long jarg1, pjsua_config jarg1_, long jarg2, pjsua_logging_config jarg2_, long jarg3, pjsua_media_config jarg3_);

pjsua_wrap.cpp

SWIGEXPORT jint JNICALL Java_org_pjsip_pjsua_pjsuaJNI_init(JNIEnv *jenv, jclass jcls, jlong jarg1, jobject jarg1_, jlong jarg2, jobject jarg2_, jlong jarg3, jobject jarg3_) {
   jint jresult = 0 ;
   pjsua_config *arg1 = (pjsua_config *) 0 ;
   pjsua_logging_config *arg2 = (pjsua_logging_config *) 0 ;
   pjsua_media_config *arg3 = (pjsua_media_config *) 0 ;
   pj_status_t result;

   (void)jenv;
   (void)jcls;
   (void)jarg1_;
   (void)jarg2_;
   (void)jarg3_;
   arg1 = *(pjsua_config **)&jarg1;
   arg2 = *(pjsua_logging_config **)&jarg2;
   arg3 = *(pjsua_media_config **)&jarg3;

   result = (pj_status_t)pjsua_init((pjsua_config const *)arg1,(pjsua_logging_config const *)arg2,(pjsua_media_config const *)arg3);
   jresult = (jint)result;
   return jresult;
}

{"init", "(JLorg/pjsip/pjsua/pjsua_config;JLorg/pjsip/pjsua/pjsua_logging_config;JLorg/pjsip/pjsua/pjsua_media_config;)I", (void*)& Java_org_pjsip_pjsua_pjsuaJNI_init},

EDIT 2

So after working on this I have gotten to a point of frustration. I am not seeing what I am doing wrong so I will put my entire process here to see if someone has a suggestion.

1. I start by getting the pjsip library: svn co http://svn.pjsip.org/repos/pjproject/trunk pjproject
2. run `./configure --prefix=/usr/local
3. make dep & make

4. sudo make install

5. I then get the pjjni code svn checkout svn://svn.code.sf.net/p/pjsip-jni/code/ pjsip-jni-code

6. I follow the Makefile instructions
7. After Makefile runs successfully (after some code cleanup) I have 2 .so files (libpjsua_jni.so and libpjsua_jni_x64.so)
8. Create jni folder with Android.mk file and .so libraries
9. Run ndk-build (How to load another .so file in your android project?)
10. Add to ADT
11. Close project. Change native support from Java to Android. Open project (Convert existing project into Android project in Eclipse?)
12. Add that project to my TestPJ project (Android -> Library -> Add)
13. Call System.loadLibrary("pjsualib") -- Name of the new lib.so

14. Receive Error

    11-22 13:55:44.784: W/dalvikvm(11464): No implementation found for native Lorg/pjsip/pjsua/pjsuaJNI;.swig_module_init:()V 11-22 13:55:48.792: W/dalvikvm(11464): Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Lorg/pjsip/pjsua/pjsuaJNI; 11-22 13:55:51.417: E/AndroidRuntime(11464): java.lang.UnsatisfiedLinkError: Native method not found: org.pjsip.pjsua.pjsuaJNI.swig_module_init:()V 11-22 13:55:51.417: E/AndroidRuntime(11464): at org.pjsip.pjsua.pjsuaJNI.swig_module_init(Native Method) 11-22 13:55:51.417: E/AndroidRuntime(11464): at org.pjsip.pjsua.pjsuaJNI.(pjsuaJNI.java:1450)

Any help would be great. Thanks!

Answer 1

An example of project which explores JNI calls from Java and from C can be found here.
The error mentioned in the question (java.lang.UnsatisfiedLinkError: Native method not found: org.pjsip.pjsua.pjsuaJNI) means one of the following problems:

- wrong native method name or/and its arguments/return value. If you have access to native code of the library than you can fix it. According to the error message and JNI considerations native method must have name Java_org_pjsip_pjsua_pjsuaJNI_init(JNIEnv *env, jobject obj, ..), where env is a pointer to JVM interface, obj is a "this" pointer and the remaining arguments can be determined from java init method of pjsuaJNI class of package org.pjsip.pjsua. Simple parameter types must be jint, jstring etc. Also return value must be correct as well. Fixing all these allows to use this method from pjsuaJNI class. Additional details can be found from Oracle Documentation to Oracle Documentation to Java 6 JNI (or Java 7 if you're using android 4.4).

- wrong java method name/signature/class name or package name. This case is almost reverse to the first one. Again, according to the mentioned error name of the method must be "init", class name pjsuaJNI and package org.pjsip.pjsua. If at least one of them is wrong the mentioned exception will happen. Signature or parameters must also be correct. In the boundaries of this error it can be considered as a parameters of the method (in addition in native JNIEnv* and jobject appears). So also must be checked and fixed if necessary.
In case of call from native code to java signature can be considered as a representation of java method with parameters as a string and can be viewed with javap -s *.class command applied to java *.class file. And in the last warning from question this signature of the method can be seen.

Also to use method pjsip library must be loaded with System.loadLibrary() in some static section of the Java class.

Unfortunately, this problem happens at runtime (it would be nice if it happened during compilation time).