Form method override support

pom.xml

@@ -46,11 +46,18 @@
         <url>https://github.com/JavaWebStack/http-server/tree/master</url>
     </scm>
 
+    <repositories>
+        <repository>
+            <id>ossrh</id>
+            <url>https://s01.oss.sonatype.org/content/repositories/snapshots</url>
+        </repository>
+    </repositories>
+
     <dependencies>
         <dependency>
             <groupId>org.javawebstack</groupId>
             <artifactId>validator</artifactId>
-            <version>1.0.1</version>
+            <version>1.0.1-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>org.reflections</groupId>

src/main/java/org/javawebstack/httpserver/Exchange.java

@@ -11,6 +11,7 @@
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.net.Socket;
 import java.nio.charset.StandardCharsets;
 import java.util.*;
 import java.util.stream.Collectors;
@@ -35,7 +36,7 @@ public static Exchange current() {
     public Exchange(HTTPServer server, IHTTPSocket socket) {
         this.server = server;
         this.socket = socket;
-        this.method = "websocket".equalsIgnoreCase(socket.getRequestHeader("upgrade")) ? HTTPMethod.WEBSOCKET : socket.getRequestMethod();
+        this.method = getRequestMethodFromSocket(socket);
         this.queryParameters = AbstractElement.fromFormData(socket.getRequestQuery()).object();
     }
 
@@ -52,13 +53,7 @@ public <T> T body(Class<T> clazz) {
         if (body.length() == 0)
             body = "{}";
 
-        String contentType = getContentType().toLowerCase();
-
-        if (contentType.contains(";")) {
-            contentType = contentType.split(";")[0].trim();
-        }
-
-        MimeType type = MimeType.byMimeType(contentType);
+        MimeType type = getMimeType();
         if (type == null)
             type = MimeType.JSON;
         AbstractElement request = null;
@@ -292,4 +287,23 @@ protected static AbstractElement getPathElement(AbstractElement source, String p
         return getPathElement(getPathElement(source, spl[0]), path.substring(spl[0].length() + 1));
     }
 
+    private HTTPMethod getRequestMethodFromSocket(IHTTPSocket socket) {
+        if ("websocket".equalsIgnoreCase(socket.getRequestHeader("upgrade")))
+            return HTTPMethod.WEBSOCKET;
+        if (server.isFormMethods() && (socket.getRequestMethod() == HTTPMethod.GET || socket.getRequestMethod() == HTTPMethod.POST) && getMimeType() == MimeType.X_WWW_FORM_URLENCODED) {
+            String rawMethodOverride = getBodyPathElement("_method").string();
+            if (rawMethodOverride != null)
+                return HTTPMethod.valueOf(rawMethodOverride);
+        }
+        return socket.getRequestMethod();
+    }
+
+    public MimeType getMimeType() {
+        String contentType = getContentType().toLowerCase();
+        if (contentType.contains(";")) {
+            contentType = contentType.split(";")[0].trim();
+        }
+
+        return MimeType.byMimeType(contentType);
+    }
 }

src/main/java/org/javawebstack/httpserver/HTTPServer.java

@@ -43,6 +43,7 @@ public class HTTPServer implements RouteParamTransformerProvider {
     private final Map<String, RequestHandler> beforeMiddleware = new HashMap<>();
     private final Map<String, AfterRequestHandler> afterMiddleware = new HashMap<>();
     private Function<Class<?>, Object> controllerInitiator = this::defaultControllerInitiator;
+    private boolean formMethods = true;
 
     public HTTPServer() {
         this(new UndertowHTTPSocketServer());
@@ -415,4 +416,12 @@ public ExceptionHandler getExceptionHandler() {
         return exceptionHandler;
     }
 
+    public boolean isFormMethods() {
+        return formMethods;
+    }
+
+    public HTTPServer disableFormMethods() {
+        formMethods = false;
+        return this;
+    }
 }