Unix Domain sockets (UDS) error when starting profiler

Comienza en com.datadog.profiling.uploader.ProfileUploader, en ProfileUploader.java:151, y sigue cómo ProfilingAgent.run pasa la URL del agente configurada. Compara el comportamiento con el issue y el pull request enlazados y, a continuación, verifica que el Java Profiler agent se inicia sin errores cuando el agente está configurado con un Unix domain socket.

Tracer Version(s)

Starting in 1.52.1

Java Version(s)

24.0.2

JVM Vendor

Amazon Corretto

Bug Report

When starting a Java app with the profiler enabled and Unix domain sockets are configured -Ddd.trace.agent.url=unix:///var/run/datadog/apm.socket, the following error occurs:

[dd.trace 2025-08-21 03:20:49:154 +0000] [dd-task-scheduler] INFO datadog.trace.agent.core.StatusLogger - DATADOG TRACER CONFIGURATION {"version":"1.52.1~6b6db17410","os_name":"Linux","os_version":"5.14.0-503.21.1.el9_5.x86_64","architecture":"amd64","lang":"jvm","lang_version":"24.0.2","jvm_vendor":"Amazon.com Inc.","jvm_version":"24.0.2+12-FR","java_class_version":"68.0","http_nonProxyHosts":"null","http_proxyHost":"null","enabled":true,"service":"adserver-external-production-4969","agent_url":"unix:///var/run/datadog/apm.socket","agent_unix_domain_socket":"/var/run/datadog/apm.socket","agent_error":true,"debug":false,"trace_propagation_style_extract":["datadog","tracecontext","baggage"],"trace_propagation_style_inject":["datadog","tracecontext","baggage"],"analytics_enabled":false,"priority_sampling_enabled":true,"logs_correlation_enabled":true,"profiling_enabled":true,"remote_config_enabled":true,"debugger_enabled":false,"debugger_exception_enabled":false,"debugger_span_origin_enabled":false,"debugger_distributed_debugger_enabled":false,"appsec_enabled":"ENABLED_INACTIVE","rasp_enabled":true,"telemetry_enabled":true,"telemetry_dependency_collection_enabled":true,"telemetry_log_collection_enabled":true,"dd_version":"","health_checks_enabled":true,"configuration_file":"no config file present","runtime_id":"b88ebcb9-2eee-4d72-857c-041082502a62","logging_settings":{"levelInBrackets":false,"dateTimeFormat":"'[dd.trace 'yyyy-MM-dd HH:mm:ss:SSS Z']'","logFile":"System.err","configurationFile":"simplelogger.properties","showShortLogName":false,"showDateTime":true,"showLogName":true,"jsonEnabled":false,"showThreadName":true,"defaultLogLevel":"INFO","warnLevelString":"WARN","embedException":false},"cws_enabled":false,"cws_tls_refresh":5000,"datadog_profiler_enabled":true,"datadog_profiler_safe":true,"datadog_profiler_enabled_overridden":false,"data_streams_enabled":false}
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:544)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:556)
Caused by: java.lang.IllegalArgumentException: Expected URL scheme 'http' or 'https' but was 'unix'
at datadog.okhttp3.HttpUrl$Builder.parse(HttpUrl.java:1328)
at datadog.okhttp3.HttpUrl.get(HttpUrl.java:916)
at com.datadog.profiling.uploader.ProfileUploader.(ProfileUploader.java:151)
at com.datadog.profiling.uploader.ProfileUploader.(ProfileUploader.java:134)
at com.datadog.profiling.agent.ProfilingAgent.run(ProfilingAgent.java:131)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
... 16 more
[dd.trace 2025-08-21 03:20:48:794 +0000] [main] SEND_TELEMETRY datadog.trace.bootstrap.Agent - Throwable thrown while starting profiling agent
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:119)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at datadog.trace.bootstrap.Agent.startProfilingAgent(Agent.java:1252)
at datadog.trace.bootstrap.Agent.start(Agent.java:379)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at datadog.trace.bootstrap.AgentBootstrap.agentmainImpl(AgentBootstrap.java:159)
at datadog.trace.bootstrap.AgentBootstrap.agentmain(AgentBootstrap.java:73)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at datadog.trace.bootstrap.AgentPreCheck.continueBootstrap(AgentPreCheck.java:166)
at datadog.trace.bootstrap.AgentPreCheck.agentmain(AgentPreCheck.java:24)
at datadog.trace.bootstrap.AgentPreCheck.premain(AgentPreCheck.java:17)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)

This appears to have been introduced by https://github.com/DataDog/dd-trace-java/pull/9339 The 'http://' was previously hardcoded to avoid this error, per similar bug: https://github.com/DataDog/dd-trace-java/issues/7165 & Fix: https://github.com/DataDog/dd-trace-java/pull/7166

Expected Behavior

Java Profiler agent to startup without error when configured with Unix Domain Sockets