test: http2 origin length ERR_HTTP2_ORIGIN_LENGTH

Author: trivikr

lib/internal/http2/core.js

@@ -138,6 +138,8 @@ const kMaxFrameSize = (2 ** 24) - 1;
 const kMaxInt = (2 ** 32) - 1;
 const kMaxStreams = (2 ** 31) - 1;
 
+const kMaxLengthOriginAltsvc = 16382;
+
 // eslint-disable-next-line no-control-regex
 const kQuotedString = /^[\x09\x20-\x5b\x5d-\x7e\x80-\xff]*$/;
 
@@ -1377,7 +1379,7 @@ class ServerHttp2Session extends Http2Session {
       throw new ERR_INVALID_CHAR('alt');
 
     // Max length permitted for ALTSVC
-    if ((alt.length + (origin !== undefined ? origin.length : 0)) > 16382)
+    if (alt.length + (origin ? origin.length : 0) > kMaxLengthOriginAltsvc)
       throw new ERR_HTTP2_ALTSVC_LENGTH();
 
     this[kHandle].altsvc(stream, origin || '', alt);
@@ -1409,7 +1411,7 @@ class ServerHttp2Session extends Http2Session {
       len += origin.length;
     }
 
-    if (len > 16382)
+    if (len > kMaxLengthOriginAltsvc)
       throw new ERR_HTTP2_ORIGIN_LENGTH();
 
     this[kHandle].origin(arr, count);

test/parallel/test-http2-origin.js

@@ -70,14 +70,17 @@ const ca = readKey('fake-startcom-root-cert.pem', 'binary');
         }
       );
     });
-    const longInput = 'http://foo.bar' + 'a'.repeat(16383);
-    throws(
-      () => session.origin(longInput),
-      {
-        code: 'ERR_HTTP2_ORIGIN_LENGTH',
-        name: 'TypeError [ERR_HTTP2_ORIGIN_LENGTH]'
-      }
-    );
+
+    // Check that error is thrown if length is greater than 16382.
+    ['http://foo.bar' + 'a'.repeat(16383)].forEach((input) => {
+      throws(
+        () => session.origin(input),
+        {
+          code: 'ERR_HTTP2_ORIGIN_LENGTH',
+          name: 'TypeError [ERR_HTTP2_ORIGIN_LENGTH]'
+        }
+      );
+    });
   }));
 
   server.listen(0, mustCall(() => {