{"record":{"id":"47e5dc1b21f12cea","repo":"apache/maven","slug":"unsupported-protocol-protocol-e-ge","errorCode":null,"errorMessage":"Unsupported Protocol: '\" + protocol + \"': \" + e.getMessage()","messagePattern":"Unsupported Protocol: '\" \\+ protocol \\+ \"': \" \\+ e\\.getMessage\\(\\)","errorType":"exception","errorClass":"TransferFailedException","httpStatus":null,"severity":"error","filePath":"compat/maven-compat/src/main/java/org/apache/maven/repository/legacy/DefaultWagonManager.java","lineNumber":319,"sourceCode":"\n    @SuppressWarnings(\"checkstyle:methodlength\")\n    @Override\n    public void getRemoteFile(\n            ArtifactRepository repository,\n            File destination,\n            String remotePath,\n            TransferListener downloadMonitor,\n            String checksumPolicy,\n            boolean force)\n            throws TransferFailedException, ResourceDoesNotExistException {\n        String protocol = repository.getProtocol();\n\n        Wagon wagon;\n\n        try {\n            wagon = getWagon(protocol);\n        } catch (UnsupportedProtocolException e) {\n            throw new TransferFailedException(\"Unsupported Protocol: '\" + protocol + \"': \" + e.getMessage(), e);\n        }\n\n        if (downloadMonitor != null) {\n            wagon.addTransferListener(downloadMonitor);\n        }\n\n        File temp = new File(destination + \".tmp\");\n\n        temp.deleteOnExit();\n\n        boolean downloaded = false;\n\n        try {\n            connectWagon(wagon, repository);\n\n            boolean firstRun = true;\n            boolean retry = true;\n","sourceCodeStart":301,"sourceCodeEnd":337,"githubUrl":"https://github.com/apache/maven/blob/e4093d4e120eac99d6bdce5ba67cace2f3085c97/compat/maven-compat/src/main/java/org/apache/maven/repository/legacy/DefaultWagonManager.java#L301-L337","documentation":"Error \"Unsupported Protocol: '\" + protocol + \"': \" + e.getMessage()\" thrown in apache/maven.","triggerScenarios":"Thrown at compat/maven-compat/src/main/java/org/apache/maven/repository/legacy/DefaultWagonManager.java:319 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"e4093d4e120eac99d6bdce5ba67cace2f3085c97","analyzedAt":"2026-08-21T22:58:24.034Z","schemaVersion":2},"datasetVersion":"2026-08-21T23:17:16.201Z"}