Resolve hostname as IP

Author: garaemon

prosilica_camera/src/nodes/prosilica_nodelet.cpp

@@ -47,8 +47,9 @@
 #include <sensor_msgs/CameraInfo.h>
 #include <sensor_msgs/fill_image.h>
 #include <sensor_msgs/SetCameraInfo.h>
-
 #include <boost/thread.hpp>
+#include <netdb.h>
+#include <arpa/inet.h>
 
 #include <prosilica_camera/ProsilicaCameraConfig.h>
 #include "prosilica/prosilica.h"
@@ -253,6 +254,21 @@ class ProsilicaNodelet : public nodelet::Nodelet
                 {
                     state_info_ = "Trying to load camera with ipaddress: " + ip_address_;
                     NODELET_INFO("%s", state_info_.c_str());
+                    /* Resolve hostname */
+                    struct hostent *he;
+                    if ((he = gethostbyname(ip_address_.c_str())) != NULL)
+                    {
+                      struct in_addr **addr_list
+                        = (struct in_addr **)he->h_addr_list;
+                      for(int i = 0; addr_list[i] != NULL; i++)
+                      {
+                        //Return the first one;
+                        ip_address_ = std::string(inet_ntoa(*addr_list[i]));
+                        NODELET_INFO("ip resolved as %s", ip_address_.c_str());
+                        break;
+                      }
+                    }
+
                     camera_ = boost::make_shared<prosilica::Camera>(ip_address_.c_str());
                     guid_ = camera_->guid();
                     hw_id_ = boost::lexical_cast<std::string>(guid_);