Exception in thread "main" java.net.UnknownHostException: services.gradle.org

Question

I am getting the below error when executing gradle.bat. I have checked the URL path and it looks fine. The URL is defined like this in the wrapper properties:

distributionUrl=https\://services.gradle.org/distributions/gradle-2.1-bin.zip 

Here's the error message:

Downloading https://services.gradle.org/distributions/gradle-2.1-bin.zip
Exception in thread "main" java.net.UnknownHostException: services.gradle.org at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:195)

Could someone help me on this?

Solution 1

1. Go to "C:\Users\[yourusername]\.gradle\" folder (hidden folder - Go to folder option and enable show hidden files if folder is not showing up)

2. Look for file "gradle.properties" if DOES NOT (most likely this would be the case) exists, Create it under "C:\Users\[yourusername]\.gradle\

3. Copy and paste following code (More detail ... https://docs.gradle.org/current/userguide/build_environment.html#sec:gradle_configuration_properties ... look for "20.3 Accessing the web via proxy" for https and user/pwd variables)

systemProp.http.proxyHost=[PROXY SERVER] systemProp.http.proxyPort=[PROXY PORT]

4. save and try again

Solution 2

look for gradle.properties file open it and change from 'distributionUrl=https\' to 'distributionUrl=http\' that will fix it.

Solution 3

I was facing the same problem when I was connected to WiFi with a download speed of 80 Mbps which is good enough, I guess. After spending hours while still being clueless, I just changed the network. Connected to hotspot from my mobile data with a much lower download speed of around 4 Mbps. The error vanished! Maybe something was wrong with the WiFi.

Solution 4

1) Go to your project directory

2) Find below file on your project directory:

gradlew
gradlew.bat

3) Edit gradlew file and change DEFAULT_JVM_OPTS variable value as below:

DEFAULT_JVM_OPTS="-Dhttp.proxyHost=XXXX -Dhttp.proxyPort=XXXX -Dhttp.proxyUser=XXXX -Dhttp.proxyPassword=XXXX  -Dhttps.proxyHost=XXXX -Dhttps.proxyPort=XXXX -Dhttps.proxyUser=XXXX-Dhttps.proxyPassword=XXXX"

save it.

4) Edit gradlew.bat file and change DEFAULT_JVM_OPTS variable value as below:

set DEFAULT_JVM_OPTS=-Dhttp.proxyHost=XXXX -Dhttp.proxyPort=XXXX -Dhttp.proxyUser=XXXX -Dhttp.proxyPassword=XXXX  -Dhttps.proxyHost=XXXX -Dhttps.proxyPort=XXXX -Dhttps.proxyUser=XXXX-Dhttps.proxyPassword=XXXX

save it.

5) Now run your "gradlew clean build" and check.

Please set your appropriate value on the place of XXXX

Note: gradlew is use for linux system user and gradlew.bat is user for window system user

Solution 5

Make sure you have enough bandwidth for the download.
I had the same problem just 15 minutes ago (that's why I'm on this page in the first place). Same error message --- and then I noticed that my uTorrent client was occupying the whole datalink. So I killed it, and run gradlew.bat again. This time everything went just fine...

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Comments

[MirandaVeracruzDeLaHoyaCardina]

Thanks, this helped me. I just had to add a section for systemProp.https.proxyHost= systemProp.https.proxyPort=

[pradeep]

I tried what you gave. Now gradle is downloaded but something other error is came

[pradeep]

A problem occurred configuring root project 'pmdemo'. > Could not resolve all dependencies for configuration ':classpath'. > Could not resolve com.android.tools.build:gradle:1.3.1. Required by: :pmdemo:unspecified > Could not resolve com.android.tools.build:gradle:1.3.1. > Could not get resource 'jcenter.bintray.com/com/android/tools /build/gradle/1.3.1/gradle-1.3.1.pom'. > Could not GET 'jcenter.bintray.com/com/android/tools/build /gradle/1.3.1/gradle-1.3.1.pom'. Received status code 403 from server: Forbidden

[mLstudent33]

Could this happen if WiFi is sporadic during flutter create myapp?