companion: send custom headers to tus uploads (#2338)

* companion: send custom headers to tus uploads

fixes #2337

* tus: send headers to companion

packages/@uppy/companion/src/server/Uploader.js

@@ -420,6 +420,7 @@ class Uploader {
       uploadLengthDeferred: false,
       retryDelays: [0, 1000, 3000, 5000],
       uploadSize: this.bytesWritten,
+      headers: headerSanitize(this.options.headers),
       addRequestId: true,
       metadata: Object.assign(
         {

packages/@uppy/tus/src/index.js

@@ -376,6 +376,7 @@ module.exports = class Tus extends Plugin {
         uploadUrl: opts.uploadUrl,
         protocol: 'tus',
         size: file.data.size,
+        headers: opts.headers,
         metadata: file.meta
       }).then((res) => {
         this.uppy.setFileState(file.id, { serverToken: res.token })