Resolve hostname as IP

Author: garaemon

prosilica_camera/src/nodes/prosilica_nodelet.cpp

@@ -49,6 +49,8 @@
 #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 +255,14 @@ 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)
+                    {
+                      ip_address_ = std::string(inet_ntoa(*(struct in_addr*)(he->h_addr)));
+                      NODELET_INFO("ip resolved as %s", ip_address_.c_str());
+                    }
+
                     camera_ = boost::make_shared<prosilica::Camera>(ip_address_.c_str());
                     guid_ = camera_->guid();
                     hw_id_ = boost::lexical_cast<std::string>(guid_);