X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Fio%2Fraw_socket.cxx;h=bb08aae76a26b1e7f240a89cce4a903473e58827;hb=bc9b3f6ff1fcc5caa67c07ad99f971c0faacf91a;hp=cf7b20f7bf873b869ace2287e9093c3dc68c19cb;hpb=08003ceba99b6c81441896a5c60c14bd2352bce5;p=simgear.git

diff --git a/simgear/io/raw_socket.cxx b/simgear/io/raw_socket.cxx
index cf7b20f7..bb08aae7 100644
--- a/simgear/io/raw_socket.cxx
+++ b/simgear/io/raw_socket.cxx
@@ -311,6 +311,10 @@ bool IPAddress::lookupNonblocking(const char* host, IPAddress& addr)
 
 const char* IPAddress::getHost () const
 {
+    if (!addr) {
+        return NULL;
+    }
+    
   static char buf [32];
 	long x = ntohl(addr->sin_addr.s_addr);
 	sprintf(buf, "%d.%d.%d.%d",
@@ -321,21 +325,37 @@ const char* IPAddress::getHost () const
 
 unsigned int IPAddress::getIP () const
 {
+    if (!addr) {
+        return 0;
+    }
+    
 	return addr->sin_addr.s_addr;
 }
 
 unsigned int IPAddress::getPort() const
 {
+    if (!addr) {
+        return 0;
+    }
+    
   return ntohs(addr->sin_port);
 }
 
 void IPAddress::setPort(int port)
 {
+    if (!addr) {
+        return;
+    }
+    
     addr->sin_port = htons(port);
 }
 
 unsigned int IPAddress::getFamily () const
 {
+    if (!addr) {
+        return 0;
+    }
+    
 	return addr->sin_family;
 }
 
@@ -363,7 +383,11 @@ const char* IPAddress::getLocalHost ()
 
 bool IPAddress::getBroadcast () const
 {
-  return (addr->sin_addr.s_addr == INADDR_BROADCAST);
+    if (!addr) {
+        return false;
+    }
+    
+    return (addr->sin_addr.s_addr == INADDR_BROADCAST);
 }
 
 unsigned int IPAddress::getAddrLen() const
@@ -381,6 +405,11 @@ struct sockaddr* IPAddress::getAddr() const
     return (struct sockaddr*) addr;
 }
 
+bool IPAddress::isValid() const
+{
+    return (addr != NULL);
+}
+
 Socket::Socket ()
 {
   handle = -1 ;