--- http-backend.c.orig	2016-03-29 07:29:32.694722500 +0200
+++ http-backend.c	2016-03-29 07:58:50.801482700 +0200
@@ -277,16 +277,32 @@
  */
 static ssize_t read_request(int fd, unsigned char **out)
 {
-	size_t len = 0, alloc = 8192;
-	unsigned char *buf = xmalloc(alloc);
+	unsigned char *buf = null;
+	size_t len = 0;
+	/* get request size */
+	size_t req_len = git_env_ulong("CONTENT_LENGTH",
+					   0);
+
+	/* check request size */
+	if (max_request_buffer < req_len) {
+		die("request was larger than our maximum size (%lu);"
+			    " try setting GIT_HTTP_MAX_REQUEST_BUFFER",
+			    max_request_buffer);
+	}
+
+	if (req_len <= 0) {
+		*out = null;
+		return 0;
+	}
+
+	/* allocate buffer */
+	buf = xmalloc(req_len)
 
-	if (max_request_buffer < alloc)
-		max_request_buffer = alloc;
 
 	while (1) {
 		ssize_t cnt;
 
-		cnt = read_in_full(fd, buf + len, alloc - len);
+		cnt = read_in_full(fd, buf + len, req_len - len);
 		if (cnt < 0) {
 			free(buf);
 			return -1;
@@ -294,21 +310,18 @@
 
 		/* partial read from read_in_full means we hit EOF */
 		len += cnt;
-		if (len < alloc) {
+		if (len < req_len) {
+			/* TODO request incomplete?? */
+			/* maybe just remove this block and condition along with the loop, */
+			/* if read_in_full is prooven reliable */
 			*out = buf;
 			return len;
+		} else {
+			/* request complete */
+			*out = buf;
+			return len;
+			
 		}
-
-		/* otherwise, grow and try again (if we can) */
-		if (alloc == max_request_buffer)
-			die("request was larger than our maximum size (%lu);"
-			    " try setting GIT_HTTP_MAX_REQUEST_BUFFER",
-			    max_request_buffer);
-
-		alloc = alloc_nr(alloc);
-		if (alloc > max_request_buffer)
-			alloc = max_request_buffer;
-		REALLOC_ARRAY(buf, alloc);
 	}
 }