- Added CURLINFO_PRIMARY_IP as a new information retrievable with

curl_easy_getinfo. It returns a pointer to a string with the most recently
  used IP address. Modified test case 500 to also verify this feature. The
  implementing of this feature was sponsored by Lenny Rachitsky at NeuStar.

tests/data/test500

@@ -32,13 +32,16 @@ lib500
 simple libcurl HTTP GET tool
  </name>
  <command>
-http://%HOSTIP:%HTTPPORT/500
+http://%HOSTIP:%HTTPPORT/500 log/ip500
 </command>
 </client>
 
 #
 # Verify data after the test has been "shot"
 <verify>
+<file name="log/ip500" mode="text">
+IP: %HOSTIP
+</file>
 <protocol>
 GET /500 HTTP/1.1
 Host: %HOSTIP:%HTTPPORT