Fix parsing of content-type header

Fixes #2216

This was broken when we switched from media-typer to content-type
modules for parsing the content-type header.

The content-type header can handle the field with parameters, but
does not do the type/sub-type parsing that media-typer does.

Our code relied on that extra bit of parsing to correctly
identify if the content should be parsed to String or kept as
a buffer.

The fix restores the use of media-typer, but using the result
of the content-type module to make sure it valid

package.json

@@ -48,6 +48,7 @@
         "js-yaml": "3.13.1",
         "json-stringify-safe": "5.0.1",
         "jsonata": "1.6.4",
+        "media-typer": "1.1.0",
         "memorystore": "1.6.1",
         "mime": "2.4.2",
         "mqtt": "2.18.8",

packages/node_modules/@node-red/nodes/core/io/21-httpin.js

@@ -23,6 +23,7 @@ module.exports = function(RED) {
     var cors = require('cors');
     var onHeaders = require('on-headers');
     var typer = require('content-type');
+    var mediaTyper = require('media-typer');
     var isUtf8 = require('is-utf8');
     var hashSum = require("hash-sum");
 
@@ -36,7 +37,9 @@ module.exports = function(RED) {
         var checkUTF = false;
 
         if (req.headers['content-type']) {
-            var parsedType = typer.parse(req.headers['content-type'])
+            var contentType = typer.parse(req.headers['content-type'])
+            if (contentType.type) {
+                var parsedType = mediaTyper.parse(contentType.type);
                 if (parsedType.type === "text") {
                     isText = true;
                 } else if (parsedType.subtype === "xml" || parsedType.suffix === "xml") {
@@ -49,6 +52,8 @@ module.exports = function(RED) {
                     // applicatino/octet-stream
                     isText = false;
                 }
+
+            }
         }
 
         getBody(req, {

packages/node_modules/@node-red/nodes/package.json

@@ -30,6 +30,7 @@
         "https-proxy-agent": "2.2.1",
         "is-utf8": "0.2.1",
         "js-yaml": "3.13.1",
+        "media-typer": "1.1.0",
         "mqtt": "2.18.8",
         "multer": "1.4.1",
         "mustache": "3.0.1",