gistfile1.txt

diff --git a/transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java b/transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java
index 906974c..2128094 100644
--- a/transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java
+++ b/transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java
@@ -240,46 +240,62 @@ public class NioSocketChannel extends AbstractNioByteChannel implements io.netty
     @Override
     protected void doWrite(ChannelOutboundBuffer in) throws Exception {
         for (;;) {
-            // Do non-gathering write for a single buffer case.
-            final int msgCount = in.size();
-            if (msgCount <= 1) {
-                super.doWrite(in);
-                return;
+            int size = in.size();
+            if (size == 0) {
+                clearOpWrite();
+                break;
             }
+            long writtenBytes = 0;
+            boolean done = false;
+            boolean setOpWrite = false;

             // Ensure the pending writes are made of ByteBufs only.
             ByteBuffer[] nioBuffers = in.nioBuffers();
             int nioBufferCnt = in.nioBufferCount();
-
-            if (nioBufferCnt <= 1) {
-                // We have something else beside ByteBuffers to write so fallback to normal writes.
-                super.doWrite(in);
-                break;
-            }
-
             long expectedWrittenBytes = in.nioBufferSize();
-
-            final SocketChannel ch = javaChannel();
-            long writtenBytes = 0;
-            boolean done = false;
-            boolean setOpWrite = false;
-            for (int i = config().getWriteSpinCount() - 1; i >= 0; i --) {
-                final long localWrittenBytes = ch.write(nioBuffers, 0, nioBufferCnt);
-                if (localWrittenBytes == 0) {
-                    setOpWrite = true;
+            SocketChannel ch = javaChannel();
+
+            switch (nioBufferCnt) {
+                case 0:
+                    // We have something else beside ByteBuffers to write so fallback to normal writes.
+                    super.doWrite(in);
+                    return;
+                case 1:
+                    ByteBuffer nioBuffer = nioBuffers[0];
+                    for (int i = config().getWriteSpinCount() - 1; i >= 0; i --) {
+                        final int localWrittenBytes = ch.write(nioBuffer);
+                        if (localWrittenBytes == 0) {
+                            setOpWrite = true;
+                            break;
+                        }
+                        expectedWrittenBytes -= localWrittenBytes;
+                        writtenBytes += localWrittenBytes;
+                        if (expectedWrittenBytes == 0) {
+                            done = true;
+                            break;
+                        }
+                    }
                     break;
-                }
-                expectedWrittenBytes -= localWrittenBytes;
-                writtenBytes += localWrittenBytes;
-                if (expectedWrittenBytes == 0) {
-                    done = true;
+                default:
+                    for (int i = config().getWriteSpinCount() - 1; i >= 0; i --) {
+                        final long localWrittenBytes = ch.write(nioBuffers, 0, nioBufferCnt);
+                        if (localWrittenBytes == 0) {
+                            setOpWrite = true;
+                            break;
+                        }
+                        expectedWrittenBytes -= localWrittenBytes;
+                        writtenBytes += localWrittenBytes;
+                        if (expectedWrittenBytes == 0) {
+                            done = true;
+                            break;
+                        }
+                    }
                     break;
-                }
             }

             if (done) {
                 // Release all buffers
-                for (int i = msgCount; i > 0; i --) {
+                for (int i = size; i > 0; i --) {
                     final ByteBuf buf = (ByteBuf) in.current();
                     in.progress(buf.readableBytes());
                     in.remove();