fix(config): replace external.ip=null with empty string

vividctrlalt · vividctrlalt · commit b4d602e83430 · 2026-04-01T08:19:27.000Z
HOCON null values cannot be bound by ConfigBeanFactory to String fields. Use empty string instead, which has the same effect (triggers the automatic IP detection fallback in java-tron). Related: tronprotocol/java-tron#6615
diff --git a/testcase/src/test/resources/config-localtest.conf b/testcase/src/test/resources/config-localtest.conf
@@ -59,7 +59,7 @@ node.discovery = {
   enable = true
   persist = true
   bind.ip = ""
-  external.ip = null
+  external.ip = ""
 }
 
 node.backup {
diff --git a/testcase/src/test/resources/config-test-dbbackup.conf b/testcase/src/test/resources/config-test-dbbackup.conf
@@ -62,7 +62,7 @@ node.discovery = {
   enable = true
   persist = true
   bind.ip = ""
-  external.ip = null
+  external.ip = ""
 }
 
 node.backup {
diff --git a/testcase/src/test/resources/config-test-index.conf b/testcase/src/test/resources/config-test-index.conf
@@ -55,7 +55,7 @@ node.discovery = {
   enable = true
   persist = true
   bind.ip = ""
-  external.ip = null
+  external.ip = ""
 }
 
 node {

Original file line number	Diff line number	Diff line change
`@@ -59,7 +59,7 @@ node.discovery = {`
`59`	`59`	`enable = true`
`60`	`60`	`persist = true`
`61`	`61`	`bind.ip = ""`
`62`		`- external.ip = null`
	`62`	`+ external.ip = ""`
`63`	`63`	`}`
`64`	`64`
`65`	`65`	`node.backup {`
Original file line number	Diff line number	Diff line change
`@@ -62,7 +62,7 @@ node.discovery = {`
`62`	`62`	`enable = true`
`63`	`63`	`persist = true`
`64`	`64`	`bind.ip = ""`
`65`		`- external.ip = null`
	`65`	`+ external.ip = ""`
`66`	`66`	`}`
`67`	`67`
`68`	`68`	`node.backup {`
Original file line number	Diff line number	Diff line change
`@@ -55,7 +55,7 @@ node.discovery = {`
`55`	`55`	`enable = true`
`56`	`56`	`persist = true`
`57`	`57`	`bind.ip = ""`
`58`		`- external.ip = null`
	`58`	`+ external.ip = ""`
`59`	`59`	`}`
`60`	`60`
`61`	`61`	`node {`