fix(api): прекращать диагностику при отмене HTTP

backend/src/services/mikrotik.ts

@@ -704,7 +704,7 @@ export class MikrotikClient {
     protocol?: "tcp" | "udp"
     direction?: "transmit" | "receive" | "both"
     durationSec?: number
-  }): Promise<Array<Record<string, string>>> {
+  }, signal?: AbortSignal): Promise<Array<Record<string, string>>> {
     const body: Record<string, string> = {
       address: params.address,
       user: params.user,
@@ -713,7 +713,7 @@ export class MikrotikClient {
       direction: params.direction ?? "both",
       duration: `${Math.max(3, params.durationSec ?? 10)}s`,
     }
-    return this.post<Array<Record<string, string>>>("/tool/bandwidth-test", body, 30_000)
+    return this.post<Array<Record<string, string>>>("/tool/bandwidth-test", body, 30_000, signal)
   }
 
   async getCertificates(): Promise<Array<Record<string, string | undefined>>> {