René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"NodeJS disconnects when \"Upgrade\" HTTP header is used for example to advertise HTTP/2 support","articleBody":"More details in this issue: https://github.com/icing/mod_h2/issues/73 as this was originally raised with the Apache HTTP/2 project but they have identified this as a Node issue.\n\nNodejs https (and http) fails to parse certain HTTP responses with an Upgrade header.\n\nThis fails:\n\n```\nHTTP/1.1 200 OK\nDate: Thu, 17 Dec 2015 15:17:46 GMT\nServer: Apache/2.5.0-dev (Unix) OpenSSL/1.0.2e\nUpgrade: h2\nConnection: Upgrade, Keep-Alive\nLast-Modified: Thu, 17 Dec 2015 15:17:39 GMT\nETag: \"7d5-5271985fa6ac0\"\nAccept-Ranges: bytes\nContent-Length: 2005\nKeep-Alive: timeout=5\nContent-Type: text/html\n```\n\nwhile this answer succeeds:\n\n```\nHTTP/1.1 200 OK\nDate: Thu, 17 Dec 2015 15:19:59 GMT\nServer: Apache/2.5.0-dev (Unix) OpenSSL/1.0.2e\nLast-Modified: Thu, 17 Dec 2015 15:19:56 GMT\nETag: \"7d5-527198e24df00\"\nAccept-Ranges: bytes\nContent-Length: 2005\nKeep-Alive: timeout=5\nConnection: Keep-Alive\nContent-Type: text/html\n```\n\nEither it is the Upgrade response header or the Upgrade token in the Connection.\n\nTo repeat, make a call my site (www.tunetheweb.com) using standard https call like below:\n\n``` javascript\nvar https = require('https');\n\nvar options = {\n  hostname: 'www.tunetheweb.com',\n  path: '/',\n};\n\nvar req = https.request(options, function(res) {\n  console.log(\"statusCode: \", res.statusCode);\n  console.log(\"headers: \", res.headers);\n\n  res.on('data', function(d) {\n    process.stdout.write(d);\n  });\n});\nreq.end();\n\nreq.on('error', function(e) {\n  console.log(e);\n});\n```\n\nApache 2.4.18 introduced these headers when using HTTP/2 through the mod_http2 module and NodeJS is now unable to connect to any Apache server using HTTP/2. NodeJS was able to connect using Apache 2.4.17 even when H2 was supported as the upgrade headers were not advertised.\n\nUpgrade headers are part of the HTTP spec (http://www.w3.org/Protocols/rfc2616/rfc2616.txt) and Node should ignore any unsupported upgrade protocol suggestions and continue using HTTP/1.1. Instead it disconnects.\n\nThanks,\nBarry\n","author":{"url":"https://github.com/tunetheweb","@type":"Person","name":"tunetheweb"},"datePublished":"2015-12-17T16:31:12.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":11},"url":"https://github.com/4334/node/issues/4334"}