handle 'continue' event only once (#3674)

Linode Object Storage sends multiple '100 continue' lines as a response to 'Expect: 100-continue'. This causes node.js to parse the response correctly and fire the 'continue' event twice. See also #3404
aws · Apr 2, 2021 · fc12b66 · fc12b66
1 parent 3691e82
commit fc12b66
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diff --git a/.changes/next-release/bugfix-s3-a986db56.json b/.changes/next-release/bugfix-s3-a986db56.json
@@ -0,0 +1,5 @@
+{
+  "type": "bugfix",
+  "category": "s3",
+  "description": "handle 'continue' event only once"
+}
diff --git a/lib/http/node.js b/lib/http/node.js
@@ -98,7 +98,7 @@ AWS.NodeHttpClient = AWS.util.inherit({
 
     var expect = httpRequest.headers.Expect || httpRequest.headers.expect;
     if (expect === '100-continue') {
-      stream.on('continue', function() {
+      stream.once('continue', function() {
         self.writeBody(stream, httpRequest);
       });
     } else {