Cannot run Gradlew: get Exception in thread "main" java.net.SocketException: Connection reset - gradle

Question

I'm trying to run gradlew to build some code that had been supplied to me. The source is the ZIP download from here and all I've done is open a command prompt, cd to that folder and run gradlew.bat.
I've had this work on my crash'n'burn machine but I can't get it working on my main dev machine. The dev machine sits behind a proxy which requires authentication, the other machine doesn't - they're at different locations.
Originally, I got:
Exception in thread "main" java.net.UnknownHostException: services.gradle.org
From this, to gradle.properties, I added:
systemProp.http.proxyHost=192.168.x.y
systemProp.http.proxyPort=80
systemProp.http.proxyUser=myuserid
systemProp.http.proxyPassword=mypassword
and ran it again and got:
C:\Users\tso259sa\workspace\spring-security-saml-master>gradlew.bat
Downloading http://services.gradle.org/distributions/gradle-1.4-bin.zip
Exception in thread "main" java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:189)
at java.net.SocketInputStream.read(SocketInputStream.java:121)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:275)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
at sun.net.www.MeteredStream.read(MeteredStream.java:134)
at java.io.FilterInputStream.read(FilterInputStream.java:133)
at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(HttpURLConnection.java:3052)
at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(HttpURLConnection.java:3046)
at org.gradle.wrapper.Download.downloadInternal(Download.java:67)
at org.gradle.wrapper.Download.download(Download.java:49)
at org.gradle.wrapper.Install.createDist(Install.java:51)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)
For info, if I try an incorrect password or ID, I get:
Exception in thread "main" java.net.ProtocolException: Server redirected too many times (20)
so I think that rules out incorrect ID. Anyone have any ideas what I can try?

Answer 1

I don't know exactly what caused the connection reset but I tried again several times, in case it was transient and, after some time, the response changed to:
Exception in thread "main" java.io.IOException: Server returned
HTTP response code: 403
Suspecting our security systems, I tried to download the file using a browser and received a message from one of the security boxes saying it had been blocked because it contained a .bat file: a regular occurrence.

Answer 2

Look in your build.gradle and gradle.properties and edit 'https://' to 'http://' in all links

Answer 3

I still got this issue today. Different company has different proxy settings.
after investigate, it worked for me:
org.gradle.daemon=true
systemProp.https.proxyHost=[server name]
systemProp.https.proxyPort=[port]
systemProp.https.proxyUser=[user name]
systemProp.https.proxyPassword=XXXXX
systemProp.https.nonProxyHosts= localhost
systemProp.http.proxyHost=[server name]
systemProp.http.proxyPort=[port]
systemProp.http.proxyUser=[user name]
systemProp.http.proxyPassword=XXXXX
systemProp.http.nonProxyHosts= localhost