Handle unavailable protocol error from JDK as MRI does.

headius · headius · commit 788cd5b3f339 · 2018-01-25T13:00:56.000-06:00
Fixes #4976
diff --git a/core/src/main/java/org/jruby/ext/socket/RubySocket.java b/core/src/main/java/org/jruby/ext/socket/RubySocket.java
@@ -646,6 +646,8 @@ static void handleSocketException(final Ruby runtime, final SocketException ex,
                     throw runtime.newErrnoEACCESError("Address already in use - " + caller + " for " + formatAddress(addr));
                 case "Address already in use" :
                     throw runtime.newErrnoEADDRINUSEError(caller + " for " + formatAddress(addr));
+                case "Protocol family unavailable" :
+                    throw runtime.newErrnoEADDRNOTAVAILError(caller + " for " + formatAddress(addr));
             }
 
             // This is ugly, but what can we do, Java provides the same exception type

Original file line number	Diff line number	Diff line change
`@@ -646,6 +646,8 @@ static void handleSocketException(final Ruby runtime, final SocketException ex,`
`646`	`646`	`throw runtime.newErrnoEACCESError("Address already in use - " + caller + " for " + formatAddress(addr));`
`647`	`647`	`case "Address already in use" :`
`648`	`648`	`throw runtime.newErrnoEADDRINUSEError(caller + " for " + formatAddress(addr));`
	`649`	`+ case "Protocol family unavailable" :`
	`650`	`+ throw runtime.newErrnoEADDRNOTAVAILError(caller + " for " + formatAddress(addr));`
`649`	`651`	`}`
`650`	`652`
`651`	`653`	`// This is ugly, but what can we do, Java provides the same exception type`