diff --git a/src/share/classes/sun/net/httpserver/ExchangeImpl.java b/src/share/classes/sun/net/httpserver/ExchangeImpl.java
index 2560d7fea754f240a9c8debd89a18d6052512067..286e7352f259ba4fbc141d67c2d32f66eeddb8b3 100644
--- a/src/share/classes/sun/net/httpserver/ExchangeImpl.java
+++ b/src/share/classes/sun/net/httpserver/ExchangeImpl.java
@@ -43,7 +43,7 @@ class ExchangeImpl {
     String method;
     URI uri;
     HttpConnection connection;
-    int reqContentLen;
+    long reqContentLen;
     long rspContentLen;
     /* raw streams which access the socket directly */
     InputStream ris;
@@ -79,7 +79,7 @@ class ExchangeImpl {
     ServerImpl server;
 
     ExchangeImpl (
-        String m, URI u, Request req, int len, HttpConnection connection
+        String m, URI u, Request req, long len, HttpConnection connection
     ) throws IOException {
         this.req = req;
         this.reqHdrs = req.headers();
@@ -148,7 +148,7 @@ class ExchangeImpl {
         if (uis != null) {
             return uis;
         }
-        if (reqContentLen == -1) {
+        if (reqContentLen == -1L) {
             uis_orig = new ChunkedInputStream (this, ris);
             uis = uis_orig;
         } else {
diff --git a/src/share/classes/sun/net/httpserver/FixedLengthInputStream.java b/src/share/classes/sun/net/httpserver/FixedLengthInputStream.java
index 6d6c9587fba7d0f9308a4532ecd7030a5b8b5958..1061fb1c03910212a74052d30fe2873a6e0eac0b 100644
--- a/src/share/classes/sun/net/httpserver/FixedLengthInputStream.java
+++ b/src/share/classes/sun/net/httpserver/FixedLengthInputStream.java
@@ -37,21 +37,21 @@ import com.sun.net.httpserver.spi.*;
  */
 
 class FixedLengthInputStream extends LeftOverInputStream {
-    private int remaining;
+    private long remaining;
 
-    FixedLengthInputStream (ExchangeImpl t, InputStream src, int len) {
+    FixedLengthInputStream (ExchangeImpl t, InputStream src, long len) {
         super (t, src);
         this.remaining = len;
     }
 
     protected int readImpl (byte[]b, int off, int len) throws IOException {
 
-        eof = (remaining == 0);
+        eof = (remaining == 0L);
         if (eof) {
             return -1;
         }
         if (len > remaining) {
-            len = remaining;
+            len = (int)remaining;
         }
         int n = in.read(b, off, len);
         if (n > -1) {
@@ -65,7 +65,7 @@ class FixedLengthInputStream extends LeftOverInputStream {
             return 0;
         }
         int n = in.available();
-        return n < remaining? n: remaining;
+        return n < remaining? n: (int)remaining;
     }
 
     public boolean markSupported () {return false;}
diff --git a/src/share/classes/sun/net/httpserver/Request.java b/src/share/classes/sun/net/httpserver/Request.java
index bdafe663c1baff18590fed7ed48699bd0afc4a91..8b50ad83a8766a5ff3275a49738993e91e20c671 100644
--- a/src/share/classes/sun/net/httpserver/Request.java
+++ b/src/share/classes/sun/net/httpserver/Request.java
@@ -53,7 +53,7 @@ class Request {
         do {
             startLine = readLine();
             /* skip blank lines */
-        } while (startLine.equals (""));
+        } while (startLine == null ? false : startLine.equals (""));
     }
 
 
diff --git a/src/share/classes/sun/net/httpserver/ServerImpl.java b/src/share/classes/sun/net/httpserver/ServerImpl.java
index a6d4b07976309f2c092a65a41ecfc00bfdf203af..cfff8dd0f6aae03fbad77598dcdeb180bf9840df 100644
--- a/src/share/classes/sun/net/httpserver/ServerImpl.java
+++ b/src/share/classes/sun/net/httpserver/ServerImpl.java
@@ -470,13 +470,13 @@ class ServerImpl implements TimeSource {
                 String version = requestLine.substring (start);
                 Headers headers = req.headers();
                 String s = headers.getFirst ("Transfer-encoding");
-                int clen = 0;
+                long clen = 0L;
                 if (s !=null && s.equalsIgnoreCase ("chunked")) {
-                    clen = -1;
+                    clen = -1L;
                 } else {
                     s = headers.getFirst ("Content-Length");
                     if (s != null) {
-                        clen = Integer.parseInt (s);
+                        clen = Long.parseLong(s);
                     }
                 }
                 ctx = contexts.findContext (protocol, uri.getPath());
diff --git a/test/com/sun/net/httpserver/bugs/FixedLengthInputStream.java b/test/com/sun/net/httpserver/bugs/FixedLengthInputStream.java
new file mode 100644
index 0000000000000000000000000000000000000000..76a71fc120bc2f0edfd9c94d12ed0f6ad9df47d1
--- /dev/null
+++ b/test/com/sun/net/httpserver/bugs/FixedLengthInputStream.java
@@ -0,0 +1,172 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug 6756771
+ * @summary  com.sun.net.httpserver.HttpServer should handle POSTs larger than 2Gig
+ */
+
+import java.io.InputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.PrintStream;
+import java.net.InetSocketAddress;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.Socket;
+import java.util.logging.*;
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpHandler;
+import com.sun.net.httpserver.HttpServer;
+
+public class FixedLengthInputStream
+{
+    static final long POST_SIZE = 4L * 1024L * 1024L * 1024L; // 4Gig
+
+    /* Remove when CR 6755625 is fixed */
+    static final String requestHeaders =  ((new StringBuilder())
+        .append("POST /flis/ HTTP/1.1\r\n")
+        .append("User-Agent: Java/1.7.0\r\n")
+        .append("Host: localhost\r\n")
+        .append("Accept: text/html, image/gif, image/jpeg,")
+        .append(        " *; q=.2, */*; q=.2\r\n")
+        .append("Content-Length: 4294967296\r\n\r\n")).toString();
+
+    void test(String[] args) throws IOException {
+        HttpServer httpServer = startHttpServer();
+        int port = httpServer.getAddress().getPort();
+        try {
+          /* Uncomment & when CR 6755625 is fixed, remove socket code
+            URL url = new URL("http://localhost:" + port + "/flis/");
+            HttpURLConnection uc = (HttpURLConnection)url.openConnection();
+            uc.setDoOutput(true);
+            uc.setRequestMethod("POST");
+            uc.setFixedLengthStreamingMode(POST_SIZE);
+            OutputStream os = uc.getOutputStream();
+          */
+
+            Socket socket = new Socket("localhost", port);
+            OutputStream os = socket.getOutputStream();
+            PrintStream ps = new PrintStream(os);
+            debug("Request: " + requestHeaders);
+            ps.print(requestHeaders);
+            ps.flush();
+
+            /* create a 32K byte array with data to POST */
+            int thirtyTwoK = 32 * 1024;
+            byte[] ba = new byte[thirtyTwoK];
+            for (int i =0; i<thirtyTwoK; i++)
+                ba[i] = (byte)i;
+
+            long times = POST_SIZE / thirtyTwoK;
+            for (int i=0; i<times; i++) {
+                os.write(ba);
+            }
+
+          /* Uncomment & when CR 6755625 is fixed, remove socket code
+            os.close();
+            InputStream is = uc.getInputStream();
+            while(is.read(ba) != -1);
+            is.close();
+           */
+
+           InputStream is = socket.getInputStream();
+           is.read();
+           socket.close();
+
+           pass();
+        } finally {
+            httpServer.stop(0);
+        }
+    }
+
+    /**
+     * Http Server
+     */
+    HttpServer startHttpServer() throws IOException {
+        if (debug) {
+            Logger logger =
+            Logger.getLogger("com.sun.net.httpserver");
+            Handler outHandler = new StreamHandler(System.out,
+                                     new SimpleFormatter());
+            outHandler.setLevel(Level.FINEST);
+            logger.setLevel(Level.FINEST);
+            logger.addHandler(outHandler);
+        }
+        HttpServer httpServer = HttpServer.create(new InetSocketAddress(0), 0);
+        httpServer.createContext("/flis/", new MyHandler(POST_SIZE));
+        httpServer.start();
+        return httpServer;
+    }
+
+    class MyHandler implements HttpHandler {
+        static final int BUFFER_SIZE = 32 * 1024;
+        long expected;
+
+        MyHandler(long expected){
+            this.expected = expected;
+        }
+
+        @Override
+        public void handle(HttpExchange t) throws IOException {
+            InputStream is = t.getRequestBody();
+            byte[] ba = new byte[BUFFER_SIZE];
+            int read;
+            long count = 0L;
+            while((read = is.read(ba)) != -1) {
+                count += read;
+            }
+            is.close();
+
+            check(count == expected, "Expected: " + expected + ", received "
+                    + count);
+
+            debug("Received " + count + " bytes");
+
+            t.sendResponseHeaders(200, -1);
+            t.close();
+        }
+    }
+
+         //--------------------- Infrastructure ---------------------------
+    boolean debug = true;
+    volatile int passed = 0, failed = 0;
+    void pass() {passed++;}
+    void fail() {failed++; Thread.dumpStack();}
+    void fail(String msg) {System.err.println(msg); fail();}
+    void unexpected(Throwable t) {failed++; t.printStackTrace();}
+    void check(boolean cond) {if (cond) pass(); else fail();}
+    void check(boolean cond, String failMessage) {if (cond) pass(); else fail(failMessage);}
+    void debug(String message) {if(debug) { System.out.println(message); }  }
+    public static void main(String[] args) throws Throwable {
+        Class<?> k = new Object(){}.getClass().getEnclosingClass();
+        try {k.getMethod("instanceMain",String[].class)
+                .invoke( k.newInstance(), (Object) args);}
+        catch (Throwable e) {throw e.getCause();}}
+    public void instanceMain(String[] args) throws Throwable {
+        try {test(args);} catch (Throwable t) {unexpected(t);}
+        System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
+        if (failed > 0) throw new AssertionError("Some tests failed");}
+
+}