diff --git a/build.gradle b/build.gradle
index cecc34d67..d201fae67 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,7 @@
 
 subprojects {
     group = 'org.httprpc'
-    version = '4.4.2'
+    version = '4.4.3'
 
     apply plugin: 'java-library'
 
diff --git a/kilo-test/src/main/java/org/httprpc/kilo/test/TestService.java b/kilo-test/src/main/java/org/httprpc/kilo/test/TestService.java
index c45515764..563a07a68 100644
--- a/kilo-test/src/main/java/org/httprpc/kilo/test/TestService.java
+++ b/kilo-test/src/main/java/org/httprpc/kilo/test/TestService.java
@@ -14,6 +14,7 @@
 
 package org.httprpc.kilo.test;
 
+import jakarta.servlet.ServletException;
 import jakarta.servlet.annotation.MultipartConfig;
 import jakarta.servlet.annotation.WebServlet;
 import org.httprpc.kilo.Creates;
@@ -302,9 +303,28 @@ public Coordinates testPostCoordinates(Coordinates coordinates) {
 
     @RequestMethod("POST")
     @ResourcePath("form-data")
-    public Map<String, Object> testPostFormData(Void body) {
-        // TODO Read parts
-        return null;
+    public Map<String, Object> testPostFormData(Void body) throws IOException, ServletException {
+        String string = null;
+        List<String> strings = null;
+        Integer number = null;
+        Set<Integer> numbers = null;
+
+        var fileSize = 0;
+        var totalFileSize = 0;
+
+        for (var part : getRequest().getParts()) {
+            // TODO
+            var name = part.getName();
+        }
+
+        return mapOf(
+            entry("string", string),
+            entry("strings", strings),
+            entry("number", number),
+            entry("numbers", numbers),
+            entry("fileSize", fileSize),
+            entry("totalFileSize", totalFileSize)
+        );
     }
 
     @RequestMethod("POST")
diff --git a/kilo-test/src/test/java/org/httprpc/kilo/test/TestServiceProxy.java b/kilo-test/src/test/java/org/httprpc/kilo/test/TestServiceProxy.java
index 6b3f639e3..faa93b48c 100644
--- a/kilo-test/src/test/java/org/httprpc/kilo/test/TestServiceProxy.java
+++ b/kilo-test/src/test/java/org/httprpc/kilo/test/TestServiceProxy.java
@@ -37,8 +37,10 @@
 @ServicePath("test")
 public interface TestServiceProxy {
     interface FormData {
+        @Required
         String getString();
-        List<Integer> getNumbers();
+        List<String> getStrings();
+        Integer getNumber();
         Date getDate();
         Path getFile();
         List<Path> getFiles();
diff --git a/kilo-test/src/test/java/org/httprpc/kilo/test/WebServiceProxyTest.java b/kilo-test/src/test/java/org/httprpc/kilo/test/WebServiceProxyTest.java
index b3267faaf..4784a7793 100644
--- a/kilo-test/src/test/java/org/httprpc/kilo/test/WebServiceProxyTest.java
+++ b/kilo-test/src/test/java/org/httprpc/kilo/test/WebServiceProxyTest.java
@@ -36,6 +36,7 @@
 import java.time.Period;
 import java.util.Date;
 import java.util.List;
+import java.util.Map;
 import java.util.UUID;
 
 import static org.httprpc.kilo.util.Collections.*;
@@ -365,44 +366,61 @@ public void testCoordinatesPost() throws IOException {
 
     @Test
     public void testFormDataPost() throws IOException {
+        var now = new Date();
+
         var textURL = getClass().getResource("test.txt");
         var imageURL = getClass().getResource("test.jpg");
 
         var body = mapOf(
-            entry("string", "abc"),
-            entry("numbers", listOf(1, 2, 3)),
-            entry("date", new Date()),
+            entry("string", "héllo&gøod+bye?"),
+            entry("strings", listOf("a", "b", "c")),
+            entry("number", 123),
+            entry("date", now),
             entry("file", textURL.getPath()),
             entry("files", listOf(textURL.getPath(), imageURL.getPath()))
         );
 
         var webServiceProxy = new WebServiceProxy("POST", baseURI.resolve("test/form-data"));
 
+        webServiceProxy.setRequestHandler(new WebServiceProxy.FormDataRequestHandler());
         webServiceProxy.setBody(body);
 
-        var result = webServiceProxy.invoke();
+        var result = (Map<?, ?>)webServiceProxy.invoke();
 
-        // TODO
+        assertEquals(result.get("string"), "héllo&gøod+bye?");
+        assertEquals(result.get("strings"), listOf("a", "b", "c"));
+        assertEquals(result.get("number"), 123);
+        assertEquals(result.get("date"), now.getTime());
+        assertEquals(result.get("fileSize"), 0);
+        assertEquals(result.get("totalFileSize"), 0);
     }
 
     @Test
     public void testFormDataPostProxy() throws IOException {
         var testServiceProxy = WebServiceProxy.of(TestServiceProxy.class, baseURI);
 
+        var now = new Date();
+
         var textURL = getClass().getResource("test.txt");
         var imageURL = getClass().getResource("test.jpg");
 
         var formData = BeanAdapter.coerce(mapOf(
-            entry("string", "abc"),
-            entry("numbers", listOf(1, 2, 3)),
-            entry("date", new Date()),
+            entry("string", "héllo&gøod+bye?"),
+            entry("strings", listOf("a", "b", "c")),
+            entry("number", 123),
+            entry("date", now),
             entry("file", textURL.getPath()),
             entry("files", listOf(textURL.getPath(), imageURL.getPath()))
         ), TestServiceProxy.FormData.class);
 
         var result = testServiceProxy.testFormDataPost(formData);
 
-        // TODO
+        assertEquals(result.get("string"), "héllo&gøod+bye?");
+        assertEquals(result.get("strings"), listOf("a", "b", "c"));
+        assertEquals(result.get("number"), 123);
+        assertEquals(result.get("date"), now.getTime());
+        assertEquals(result.get("fileSize"), 0);
+        assertEquals(result.get("totalFileSize"), 0);
     }
 
     @Test