Error with precompiled 1.0.5-win32 and self-compiled 1.0.6 and svn-trunk:

[DEBUG] System property 'opennms.library.jicmp' set to 'H:_workspace_/icmp_monitor/jicmp.dll. Attempting to load jicmp library from this location.
[INFO] Successfully loaded jicmp library.
Exception in thread "main" java.net.SocketException: Could not get protocol entry for 'icmp'. The getprotobyname("icmp") system call returned NULL.
at org.opennms.protocols.icmp.IcmpSocket.initSocket(Native Method)
at org.opennms.protocols.icmp.IcmpSocket.<init>(IcmpSocket.java:107)
at org.opennms.netmgt.ping.Pinger.initialize(Pinger.java:111)
at org.opennms.netmgt.ping.Pinger.<init>(Pinger.java:105)
at planetng.daemon.monitor.icmp.IcmpDaemon.init(IcmpDaemon.java:45)
at planetng.daemon.monitor.icmp.IcmpDaemon.init(IcmpDaemon.java:50)
at planetng.daemon.monitor.icmp.IcmpDaemon.main(IcmpDaemon.java:136)

i looked thru the code and found a small shortcoming that is required on win32:

JNIEXPORT void JNICALL
Java_org_opennms_protocols_icmp_IcmpSocket_initSocket (JNIEnv *env, jobject instance)
{
#ifdef _WIN32_
WSADATA info;
WSAStartup(MAKEWORD(1,1), &info);
int icmp_fd = socket(AF_INET, SOCK_RAW, 1);
#else
struct protoent *proto;

proto = getprotobyname("icmp");
if (proto == (struct protoent *) NULL) {
char errBuf[128]; /* for exceptions */
jclass ioException = (*env)->FindClass(env, "java/net/SocketException");
if(ioException != NULL)
{
sprintf(errBuf, "Could not get protocol entry for 'icmp'. The getprotobyname(\"icmp\") system call returned NULL.");
(*env)->ThrowNew(env, ioException, (char *)errBuf);
}
return;
}

int icmp_fd = socket(AF_INET, SOCK_RAW, proto->p_proto);
#endif
...

this fix has been tested with 1.0.6 and svn source under msys/mingw32/gcc-3.4.5