Support global-agent for central proxy configuration (#3423)

* * Added global-agent as central Global HTTP/HTTPS proxy configurable using environment variable
**  https://www.npmjs.com/package/global-agent
* Server-Bootstrap on index.js
** import 'global-agent/bootstrap'
* added dep in package.json
** global-agent: "^3.0.0

* * Added global-agent as central Global HTTP/HTTPS proxy configurable using environment variable
**  Added env variables

* update env example

* update env and lock file

* update env and lock file

---------

Co-authored-by: Henry <hzj94@hotmail.com>

packages/server/.env.example

@@ -52,3 +52,9 @@ PORT=3000
 
 # APIKEY_STORAGE_TYPE=json (json | db)
 # SHOW_COMMUNITY_NODES=true
+
+# Uncomment the following lines to enable global agent proxy
+# see https://www.npmjs.com/package/global-agent for more details
+# GLOBAL_AGENT_HTTP_PROXY=CorporateHttpProxyUrl
+# GLOBAL_AGENT_HTTPS_PROXY=CorporateHttpsProxyUrl
+# GLOBAL_AGENT_NO_PROXY=ExceptionHostsToBypassProxyIfNeeded

packages/server/package.json

@@ -85,7 +85,8 @@
         "sqlite3": "^5.1.6",
         "typeorm": "^0.3.6",
         "uuid": "^9.0.1",
-        "winston": "^3.9.0"
+        "winston": "^3.9.0",
+        "global-agent": "^3.0.0"
     },
     "devDependencies": {
         "@types/content-disposition": "0.5.8",

packages/server/src/index.ts

@@ -22,6 +22,7 @@ import flowiseApiV1Router from './routes'
 import errorHandlerMiddleware from './middlewares/errors'
 import { SSEStreamer } from './utils/SSEStreamer'
 import { validateAPIKey } from './utils/validateKey'
+import 'global-agent/bootstrap'
 
 declare global {
     namespace Express {