#20302
89%
master: 89%

Ran 05 Jun 2026 10:17PM UTC

Jobs 1

Files 653

Run time 1min

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Committed 22 May 2026 06:37PM UTC coverage: 88.838% (+0.001%) from 88.837%

Build # #20302

Build Type

push

github

Committed by

web-flow

Commit Message

core: throw IOException when ProxySelector returns null or empty list (#12793)

ProxySelector.select(URI) is contractually required to return a non-null, non-empty list. Some implementations violate this, which previously caused an opaque crash in ProxyDetectorImpl:

```
java.lang.IndexOutOfBoundsException: Index: 0
    at java.util.Collections$EmptyList.get
    at io.grpc.internal.ProxyDetectorImpl.detectProxy
```

Detect this case explicitly and throw an IOException naming the offending ProxySelector class, so a broken implementation can be identified and fixed by its author rather than silently worked around in every caller.

Coverage Stats

36277 of 40835 relevant lines covered (88.84%)

0.89 hits per line

Coverage Regressions

Lines	Coverage	∆	File
5	74.14	-4.31%	../servlet/src/main/java/io/grpc/servlet/ServletServerStream.java
1	90.77	-0.26%	../core/src/main/java/io/grpc/internal/ClientCallImpl.java
1	90.91	0.35%	../core/src/main/java/io/grpc/internal/DelayedClientCall.java
1	83.87	1.11%	../core/src/main/java/io/grpc/internal/ProxyDetectorImpl.java
1	86.49	-0.22%	../inprocess/src/main/java/io/grpc/inprocess/InProcessTransport.java
1	91.02	-0.2%	../netty/src/main/java/io/grpc/netty/NettyServerHandler.java
1	74.23	-1.03%	../servlet/src/main/java/io/grpc/servlet/AsyncServletOutputStreamWriter.java

Jobs

ID	Job ID	Ran	Files	Coverage
1	#20302.1	05 Jun 2026 10:17PM UTC	653	88.84

grpc / grpc-java / #20302
89%
master: 89%

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grpc / grpc-java / #20302 89% master: 89%

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