diff --git a/qse/doc/page/main.doc b/qse/doc/page/main.doc
index 1682025a..b88dbe36 100644
--- a/qse/doc/page/main.doc
+++ b/qse/doc/page/main.doc
@@ -56,14 +56,22 @@ For additional command line options to @b configure, run @b configure @b --help.
 
 @subsection crosscompile_win32 CROSS-COMPILING FOR WIN32
 
-While the package does not provide any build files for native WIN32 compilers,
-you can cross-compile it for WIN32 with a cross-compiler. Get a cross-compiler 
-installed first and run @b configure with a host and a target.
+While the package does not provide build files for native WIN32/WIN64 compilers,
+you can cross-compile it for WIN32/WIN64 with a cross-compiler. Get a 
+cross-compiler installed first and run @b configure with a host and a target.
 
-With MINGW32, you may run @b configure as shown below:
+With MINGW-W64, you may run @b configure as shown below for WIN32:
 
 @code
-$ ./configure --host=i586-mingw32msvc --target=i586-mingw32msvc 
+$ ./configure --host=i686-w64-mingw32 --target=i686-w64-mingw32
+$ make
+$ make install
+@endcode
+
+With MINGW-W64, you may run @b configure as shown below for WIN64:
+
+@code
+$ ./configure --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32
 $ make
 $ make install
 @endcode
@@ -92,6 +100,4 @@ Under the wide character mode:
 - #qse_char_t maps to #qse_wchar_t.
 
 #qse_mchar_t maps to @b char and #qse_wchar_t maps to @b wchar_t or equivalent.
-
-
 */
diff --git a/qse/lib/net/httpd.c b/qse/lib/net/httpd.c
index 2f6e0b6f..bc1a0511 100644
--- a/qse/lib/net/httpd.c
+++ b/qse/lib/net/httpd.c
@@ -458,6 +458,7 @@ static void delete_from_client_array (qse_httpd_t* httpd, int fd)
 
 		qse_htrd_close (array->data[fd].htrd);
 		array->data[fd].htrd = QSE_NULL;	
+qse_fprintf (QSE_STDERR, QSE_T("Debug: closing socket %d\n"), array->data[fd].handle.i);
 		close (array->data[fd].handle.i);
 		array->size--;
 	}
@@ -777,6 +778,7 @@ qse_fprintf (QSE_STDERR, QSE_T("Debug: connection closed %d\n"), client->handle.
 	/* feed may have called the request callback multiple times... 
  	 * that's because we don't know how many valid requests
 	 * are included in 'buf' */ 
+qse_fprintf (QSE_STDERR, QSE_T("Debug: read from a client %d\n"), client->handle.i);
 	httpd->errnum = QSE_HTTPD_ENOERR;
 	if (qse_htrd_feed (client->htrd, buf, m) <= -1)
 	{
diff --git a/qse/lib/net/httpd_task.c b/qse/lib/net/httpd_task.c
index ad618ae7..d01a59d8 100644
--- a/qse/lib/net/httpd_task.c
+++ b/qse/lib/net/httpd_task.c
@@ -526,6 +526,7 @@ qse_httpd_task_t* qse_httpd_entaskfile (
 	qse_httpd_task_t task;
 	task_file_t data;
 	
+qse_printf (QSE_T("Debug: sending file to %d\n"), client->handle.i);
 	QSE_MEMSET (&data, 0, QSE_SIZEOF(data));
 	data.handle = handle;
 	data.offset = offset;
@@ -608,12 +609,16 @@ static int task_main_dir (
 	 * the size of the buffer arrray, you should check this size. 
 	 */
 	
+#define SIZE_CHLEN     4
+#define SIZE_CHLENCRLF 2
+#define SIZE_CHENDCRLF 2
+
 	/* reserve space to fill with the chunk length
 	 * 4 for the actual chunk length and +2 for \r\n */
-	ctx->buflen = 4 + 2; 
+	ctx->buflen = SIZE_CHLEN + SIZE_CHLENCRLF; 
 
 	/* free space remaing in the buffer for the chunk data */
-	ctx->bufrem = QSE_COUNTOF(ctx->buf) - ctx->buflen - 2; 
+	ctx->bufrem = QSE_COUNTOF(ctx->buf) - ctx->buflen - CHENDCRLF; 
 
 	if (ctx->footer_pending)
 	{
@@ -629,9 +634,12 @@ static int task_main_dir (
 		}
 
 		ctx->buflen += x;
-		ctx->chunklen = ctx->buflen - 5;
+		ctx->chunklen = ctx->buflen - 5; /* -5 for \r\n0\r\n added above */
+
+		/* CHENDCRLF */
 		ctx->buf[ctx->buflen++] = '\r';
 		ctx->buf[ctx->buflen++] = '\n';
+
 		goto set_chunklen;
 	}
 
@@ -675,6 +683,8 @@ static int task_main_dir (
 			{
 				ctx->footer_pending = 1;
 				ctx->chunklen = ctx->buflen;
+
+				/* CHENDCRLF */
 				ctx->buf[ctx->buflen++] = '\r';
 				ctx->buf[ctx->buflen++] = '\n';
 			}
@@ -682,6 +692,8 @@ static int task_main_dir (
 			{
 				ctx->buflen += x;
 				ctx->chunklen = ctx->buflen - 5;
+
+				/* CHENDCRLF */
 				ctx->buf[ctx->buflen++] = '\r';
 				ctx->buf[ctx->buflen++] = '\n';
 			}
@@ -702,6 +714,8 @@ static int task_main_dir (
 			{
 				/* buffer not large enough to hold this entry */
 				ctx->chunklen = ctx->buflen;
+
+				/* CHENDCRLF */
 				ctx->buf[ctx->buflen++] = '\r';
 				ctx->buf[ctx->buflen++] = '\n';
 				break;
@@ -718,18 +732,25 @@ static int task_main_dir (
 	while (1);
 
 set_chunklen:
+	/* right alignment with space padding on the left */
 	x = snprintf (
-		ctx->buf, (4 + 2) - 1, 
-		"%*lX", (int)(4 + 2 - 2), 
-		(unsigned long)(ctx->chunklen - (4 + 2)));
+		ctx->buf, (SIZE_CHLEN + SIZE_CHLENCRLF) - 1, 
+		"%*lX", (int)(SIZE_CHLEN + SIZE_CHLENCRLF - 2), 
+		(unsigned long)(ctx->chunklen - (SIZE_CHLEN + SIZE_CHLENCRLF)));
+
+	/* CHLENCRLF */
 	ctx->buf[x] = '\r';
 	ctx->buf[x+1] = '\n';
+
+	/* skip leading space padding */
 	for (x = 0; ctx->buf[x] == ' '; x++) ctx->buflen--;
 	ctx->bufpos = x;
 
 send_dirlist:
 	n = send (client->handle.i, &ctx->buf[ctx->bufpos], ctx->buflen, 0);
 	if (n <= -1) return -1;
+
+	/* NOTE if (n == 0), it will enter an infinite loop */
 		
 	ctx->bufpos += n;
 	ctx->buflen -= n;