Prevent Helidon connector from re-encoding URI

common/uri/src/main/java/io/helidon/common/uri/UriEncoding.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2023 Oracle and/or its affiliates.
+ * Copyright (c) 2022, 2024 Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -48,10 +48,10 @@ private UriEncoding() {
      * @return decoded string
      */
     public static String decodeUri(String uriSegment) {
-        if (uriSegment.length() == 0) {
+        if (uriSegment.isEmpty()) {
             return "";
         }
-        if (uriSegment.indexOf('%') == -1) {
+        if (uriSegment.indexOf('%') == -1 && uriSegment.indexOf('+') == -1) {
             return uriSegment;
         }
 
@@ -124,7 +124,6 @@ private static void appendEscape(StringBuilder appender, int b) {
     }
 
     private static String decode(String string) {
-
         int len = string.length();
 
         StringBuilder sb = new StringBuilder(len);
@@ -143,7 +142,7 @@ private static String decode(String string) {
                 betweenBrackets = false;
             }
             if (c != '%' || betweenBrackets) {
-                sb.append(c);
+                sb.append(c == '+' && !betweenBrackets ? ' ' : c);      // handles '+' decoding
                 if (++i >= len) {
                     break;
                 }

common/uri/src/test/java/io/helidon/common/uri/UriEncodingTest.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2024 Oracle and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.helidon.common.uri;
+
+import org.junit.jupiter.api.Test;
+
+import static io.helidon.common.uri.UriEncoding.decodeUri;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.CoreMatchers.is;
+
+class UriEncodingTest {
+
+    @Test
+    void testSpaceDecoding() {
+        assertThat(decodeUri("%20hello%20world%20"), is(" hello world "));
+        assertThat(decodeUri("[%20]hello[%20]world[%20]"), is("[%20]hello[%20]world[%20]"));
+        assertThat(decodeUri("+hello+world+"), is(" hello world "));
+        assertThat(decodeUri("[+]hello[+]world[+]"), is("[+]hello[+]world[+]"));
+    }
+}

jersey/connector/src/main/java/io/helidon/jersey/connector/HelidonConnector.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Oracle and/or its affiliates.
+ * Copyright (c) 2023, 2024 Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,7 +29,6 @@
 import io.helidon.common.LazyValue;
 import io.helidon.common.Version;
 import io.helidon.common.tls.Tls;
-import io.helidon.common.uri.UriQueryWriteable;
 import io.helidon.config.Config;
 import io.helidon.http.Header;
 import io.helidon.http.HeaderNames;
@@ -143,19 +142,9 @@ private HttpClientRequest mapRequest(ClientRequest request) {
         HttpClientRequest httpRequest = webClient
                 .method(Method.create(request.getMethod()))
                 .proxy(requestProxy)
+                .skipUriEncoding(true)      // already encoded by Jersey
                 .uri(uri);
 
-        // map query parameters
-        String queryString = uri.getQuery();
-        if (queryString != null) {
-            UriQueryWriteable query = UriQueryWriteable.create();
-            query.fromQueryString(queryString);
-            query.names().forEach(name -> {
-                String[] values = query.all(name).toArray(new String[0]);
-                httpRequest.queryParam(name, values);
-            });
-        }
-
         // map request headers
         request.getRequestHeaders().forEach((key, value) -> {
             String[] values = value.toArray(new String[0]);

jersey/tests/connector/src/test/java/io/helidon/jersey/connector/ConnectorBase.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Oracle and/or its affiliates.
+ * Copyright (c) 2023, 2024 Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -115,11 +115,11 @@ public void testBasicPost() {
     @Test
     public void queryGetTest() {
         try (Response response = target("basic").path("getquery")
-                .queryParam("first", "hello")
+                .queryParam("first", "hello there ")
                 .queryParam("second", "world")
                 .request().get()) {
             assertThat(response.getStatus(), is(200));
-            assertThat(response.readEntity(String.class), is("helloworld"));
+            assertThat(response.readEntity(String.class), is("hello there world"));
         }
     }