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I am working oncan application which is to push records to azure table & blobs. My application ran for around 8 days perfectly fine but then it started giving connection time out error related to blob. Can anyone please guide to to workaround this?

Error logs below :

"java.net.ConnectException: Operation timed out (Connection timed out)\n\tat java.base/java.net.PlainSocketImpl.socketConnect(Native Method)\n\tat java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)\n\tat java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)\n\tat java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)\n\tat java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)\n\tat java.base/java.net.Socket.connect(Socket.java:609)\n\tat java.base/sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:299)\n\tat java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:177)\n\tat java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:474)\n\tat java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:569)\n\tat java.base/sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:266)\n\tat java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:373)\n\tat java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:203)\n\tat java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1187)\n\tat java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1081)\n\tat java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:189)\n\tat java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1592)\n\tat java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1520)\n\tat java.base/java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:527)\n\tat java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:334)\n\tat com.microsoft.azure.storage.core.ExecutionEngine.executeWithRetry(ExecutionEngine.java:115)\n\tat com.microsoft.azure.storage.blob.CloudBlobContainer.exists(CloudBlobContainer.java:744)\n\tat com.microsoft.azure.storage.blob.CloudBlobContainer.exists(CloudBlobContainer.java:731)\n\tat com.microsoft.azure.storage.blob.CloudBlobContainer.exists(CloudBlobContainer.java:705)\n\tat

Neeraj Srivastava
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1 Answers1

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To resolve the error "java.net.ConnectException: Operation timed out (Connection timed out)" try below suggestions if helpful:

  • Try setting a small timeoutInterval and use a large maximumExecutionTime in your blobRequestOptions.
  • If the above does not work, use fiddler to verify that you are sending and receiving a response as expected.
  • Try checking the code you are using to upload files to Azure blob.
  • Check the system configuration and make sure there is no firewall that blocks the request from Java.
  • Connection timeouts usually occurs if there are too many requests overloading the server.
  • Otherwise, try uploading blob in chunk as a workaround.
  • If still the error persists, try using code snippet mentioned in this link.
  • Check whether the IP address/domain and port are incorrect or down.

For more information in detail, please check below references:

java - Azure StorageException: An unknown failure occurred : Connection timed out: connect - Stack Overflow

java - What could cause socket ConnectException: Connection timed out? - Stack Overflow

Why would a "java.net.ConnectException: Connection timed out" exception occur when URL is up? - Stack Overflow

Sridevi
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