Added fetch agent

src/WAConnection/0.Base.ts

@@ -377,7 +377,7 @@ export class WAConnection extends EventEmitter {
             method,
             body,
             headers: { Origin: DEFAULT_ORIGIN, ...(headers || {}) },
-            agent: agent || this.connectOptions.agent
+            agent: agent || this.connectOptions.fetchAgent
         })
     )
     generateMessageTag (longTag: boolean = false) {

src/WAConnection/Constants.ts

@@ -84,8 +84,10 @@ export type WAConnectOptions = {
     /** max time for the phone to respond to a connectivity test */
     phoneResponseTime?: number
     connectCooldownMs?: number
-    /** agent which can be used for proxying connections */
+    /** agent used for WS connections */
     agent?: Agent
+    /** agent used for fetch requests -- uploading/downloading media */
+    fetchAgent?: Agent
 }
 /** from: https://stackoverflow.com/questions/3809401/what-is-a-good-regular-expression-to-match-a-url */
 export const URL_REGEX = /[-a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_+.~#?&//=]*)?/gi