libfreerdp-core: workaround for fragmentation in HTTP header

libfreerdp/core/http.c

@@ -22,6 +22,7 @@
 #endif
 
 #include <winpr/crt.h>
+#include <winpr/print.h>
 
 #include <freerdp/utils/memory.h>
 
@@ -405,28 +406,39 @@ HttpResponse* http_response_recv(rdpTls* tls)
 
 	while (TRUE)
 	{
-		status = tls_read(tls, p, length - nbytes);
-
-		if (status > 0)
-		{
-			nbytes += status;
-			p = (BYTE*) &buffer[nbytes];
-		}
-		else if (status == 0)
-		{
-			continue;
-		}
-		else
-		{
-			http_response_free(http_response);
-			return NULL;
-			break;
-		}
+        while (nbytes < 5)
+        {
+            status = tls_read(tls, p, length - nbytes);
+            
+            if (status > 0)
+            {
+                nbytes += status;
+                p = (BYTE*) &buffer[nbytes];
+            }
+            else if (status == 0)
+            {
+                continue;
+            }
+            else
+            {
+                http_response_free(http_response);
+                return NULL;
+            }
+        }
 
 		header_end = strstr((char*) buffer, "\r\n\r\n");
         
         if (header_end)
+        {
             header_end += 2;
+        }
+        else
+        {
+            printf("http_response_recv: invalid response:\n");
+            winpr_HexDump(buffer, status);
+			http_response_free(http_response);
+			return NULL;
+        }
 
 		if (header_end != NULL)
 		{