From 1db5ec5e3f1e740912584669758fef37862e6654 Mon Sep 17 00:00:00 2001
From: Oleg Smirnov <oleg31101996@gmail.com>
Date: Sun, 7 Jun 2026 21:36:30 +0200
Subject: [PATCH 1/2] Empty host part in the URI is allowed

---
 .../json/schema/internal/formats/UriSpec.kt   | 32 ++++++++++++++-----
 .../JsonSchemaUriFormatValidationTest.kt      |  2 +-
 2 files changed, 25 insertions(+), 9 deletions(-)

diff --git a/json-schema-validator/src/commonMain/kotlin/io/github/optimumcode/json/schema/internal/formats/UriSpec.kt b/json-schema-validator/src/commonMain/kotlin/io/github/optimumcode/json/schema/internal/formats/UriSpec.kt
index 08c629ce..a9584932 100644
--- a/json-schema-validator/src/commonMain/kotlin/io/github/optimumcode/json/schema/internal/formats/UriSpec.kt
+++ b/json-schema-validator/src/commonMain/kotlin/io/github/optimumcode/json/schema/internal/formats/UriSpec.kt
@@ -17,12 +17,17 @@ internal object UriSpec {
       return true
     }
     return when {
-      hierPart.startsWith("//") ->
+      hierPart.startsWith("//") -> {
         isValidAuthorityWithPath(hierPart.substring(2))
-      hierPart.startsWith("/") ->
+      }
+
+      hierPart.startsWith("/") -> {
         isValidAbsolutePath(hierPart.substring(1))
-      else ->
+      }
+
+      else -> {
         isValidRootlessPath(hierPart)
+      }
     }
   }
 
@@ -31,12 +36,17 @@ internal object UriSpec {
       return true
     }
     return when {
-      relativePart.startsWith("//") ->
+      relativePart.startsWith("//") -> {
         isValidAuthorityWithPath(relativePart.substring(2))
-      relativePart.startsWith("/") ->
+      }
+
+      relativePart.startsWith("/") -> {
         isValidAbsolutePath(relativePart.substring(1))
-      else ->
+      }
+
+      else -> {
         isValidNoschemaPath(relativePart)
+      }
     }
   }
 
@@ -106,8 +116,12 @@ internal object UriSpec {
     val segmentSeparatorIndex = authorityWithPath.indexOf('/')
     val hostEndIndex =
       when {
+        // authority cannot start from :
         portSeparatorIndex > 0 -> portSeparatorIndex
-        segmentSeparatorIndex > 0 -> segmentSeparatorIndex
+
+        // there is not / in authority part so we should take the segment as the end of host name event if it is the first character (empty host)
+        segmentSeparatorIndex >= 0 -> segmentSeparatorIndex
+
         else -> authorityWithPath.length
       }
     val hostStartIndex =
@@ -148,8 +162,10 @@ internal object UriSpec {
   }
 
   private fun isValidHost(host: String): Boolean {
+    // According to RFC3986 https://datatracker.ietf.org/doc/html/rfc3986#section-3.2.2
+    // It is okay to have an empty host because some of the schemas have a default resolution strategy
     if (host.isEmpty()) {
-      return false
+      return true
     }
     if (IpV4FormatValidator.validate(host).isValid()) {
       return true
diff --git a/json-schema-validator/src/commonTest/kotlin/io/github/optimumcode/json/schema/assertions/general/format/JsonSchemaUriFormatValidationTest.kt b/json-schema-validator/src/commonTest/kotlin/io/github/optimumcode/json/schema/assertions/general/format/JsonSchemaUriFormatValidationTest.kt
index 5ab13011..f2200f75 100644
--- a/json-schema-validator/src/commonTest/kotlin/io/github/optimumcode/json/schema/assertions/general/format/JsonSchemaUriFormatValidationTest.kt
+++ b/json-schema-validator/src/commonTest/kotlin/io/github/optimumcode/json/schema/assertions/general/format/JsonSchemaUriFormatValidationTest.kt
@@ -20,11 +20,11 @@ class JsonSchemaUriFormatValidationTest : FunSpec() {
           "https://localhost#",
           "h://localhost",
           "https://locahost#frag?ment",
+          "file:///home/runner/work/gloo-mesh-enterprise",
         ),
       invalidTestCases =
         listOf(
           TestCase("", "empty"),
-          TestCase("https:///", "empty hostname"),
           TestCase("2http://localhost", "invalid schema"),
           TestCase("https://example.com:44a/", "invalid port"),
           TestCase("https:", "only schema"),

From 27e923aa433df7624ad9fa3e6a079b24ca7cea1f Mon Sep 17 00:00:00 2001
From: Oleg Smirnov <oleg31101996@gmail.com>
Date: Sun, 7 Jun 2026 21:40:31 +0200
Subject: [PATCH 2/2] fix comment lenght issue

---
 .../github/optimumcode/json/schema/internal/formats/UriSpec.kt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/json-schema-validator/src/commonMain/kotlin/io/github/optimumcode/json/schema/internal/formats/UriSpec.kt b/json-schema-validator/src/commonMain/kotlin/io/github/optimumcode/json/schema/internal/formats/UriSpec.kt
index a9584932..cd4ee6b0 100644
--- a/json-schema-validator/src/commonMain/kotlin/io/github/optimumcode/json/schema/internal/formats/UriSpec.kt
+++ b/json-schema-validator/src/commonMain/kotlin/io/github/optimumcode/json/schema/internal/formats/UriSpec.kt
@@ -119,7 +119,8 @@ internal object UriSpec {
         // authority cannot start from :
         portSeparatorIndex > 0 -> portSeparatorIndex
 
-        // there is not / in authority part so we should take the segment as the end of host name event if it is the first character (empty host)
+        // there is not / in authority part so we should take the segment
+        // as the end of host name event if it is the first character (empty host)
         segmentSeparatorIndex >= 0 -> segmentSeparatorIndex
 
         else -> authorityWithPath.length