Set additional request headers for POST RPCs

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/js/urweb.js b/lib/js/urweb.js
index a5713bf0..13e80e30 100644
--- a/lib/js/urweb.js
+++ b/lib/js/urweb.js
@@ -669,6 +669,9 @@ function requestUri(xhr, uri, needsSig) {
     return;
 
   xhr.open("POST", uri, true);
+  xhr.setRequestHeader("Content-type", "text/plain");
+  xhr.setRequestHeader("Content-length", "0");
+  xhr.setRequestHeader("Connection", "close");
 
   if (client_id != null) {
     xhr.setRequestHeader("UrWeb-Client", client_id.toString());