Use proxy for signing
diff --git a/setup_esac/build.ant b/setup_esac/build.ant
index 37442dd..69db21b 100644
--- a/setup_esac/build.ant
+++ b/setup_esac/build.ant
@@ -142,6 +142,8 @@
         <attribute name="platform" />
         <sequential>
             <exec executable="${curl.root}curl" failifexecutionfails="true" failonerror="true" dir="setup_esac">
+            	<arg value="--proxy"/>
+            	<arg value="http://proxy.eclipse.org:9898"/>
                 <arg value="-o" />
                 <arg value="esac_${visibleVersion}_@{platform}.msi" />
                 <arg value="-F" />