Fixed bug when request header exceeds 8192 bytes.

core/src/main/java/org/nanohttpd/protocols/http/HTTPSession.java

@@ -374,6 +374,10 @@ public void execute() throws IOException {
                 read = this.inputStream.read(buf, this.rlen, HTTPSession.BUFSIZE - this.rlen);
             }
 
+            if(this.splitbyte == 0 && this.rlen == HTTPSession.BUFSIZE){
+                throw new ResponseException(Status.BAD_REQUEST, "BAD REQUEST: Request header is too large.");
+            }
+
             if (this.splitbyte < this.rlen) {
                 this.inputStream.reset();
                 this.inputStream.skip(this.splitbyte);

core/src/test/java/org/nanohttpd/junit/protocols/http/BadRequestTest.java

@@ -8,18 +8,18 @@
  * %%
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
- * 
+ *
  * 1. Redistributions of source code must retain the above copyright notice, this
  *    list of conditions and the following disclaimer.
- * 
+ *
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
- * 
+ *
  * 3. Neither the name of the nanohttpd nor the names of its contributors
  *    may be used to endorse or promote products derived from this software without
  *    specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
@@ -33,11 +33,11 @@
  * #L%
  */
 
+import org.junit.Test;
+
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 
-import org.junit.Test;
-
 public class BadRequestTest extends HttpServerTest {
 
     @Test
@@ -67,4 +67,17 @@ public void testMissingURI() throws IOException {
         assertResponse(outputStream, expected);
     }
 
+    @Test
+    public void testTooLargerURI() throws IOException {
+        StringBuilder request = new StringBuilder("GET http://example.com HTTP/1.1\r\n");
+        for(int i = 0; i < 1000; i++){
+            request.append("header"+i+": abcdefghijklmnopqrstuvwxyz\r\n");
+        }
+        ByteArrayOutputStream outputStream = invokeServer(request.toString());
+        String[] expected = new String[]{
+                "HTTP/1.1 400 Bad Request"
+        };
+        assertResponse(outputStream, expected);
+    }
+
 }