fix(api): завершать запрос при обрыве ответа RouterOS

backend/src/services/mikrotik.ts

@@ -15,6 +15,12 @@ import type {
 
 const MAX_ROS_BODY_BYTES = 8 * 1024 * 1024
 
+function watchRosResponseFailure(res: http.IncomingMessage, reject: (error: Error) => void): void {
+  res.once("aborted", () => reject(new Error("RouterOS response interrupted (ECONNRESET)")))
+  // IncomingMessage errors are separate from ClientRequest errors after headers arrive.
+  res.once("error", reject)
+}
+
 function appendRosBody(body: string, chunk: string, req?: http.ClientRequest): string {
   if (body.length + chunk.length > MAX_ROS_BODY_BYTES) {
     req?.destroy(new Error("RouterOS: ответ больше 8 МиБ"))
@@ -62,6 +68,7 @@ function rosRequest(
     }, timeoutMs)
 
     const req = lib.request(options, (res) => {
+      watchRosResponseFailure(res, error => { clearTimeout(timer); reject(error) })
       let body = ""
       res.setEncoding("utf8")
       res.on("data", (chunk: string) => { body = appendRosBody(body, chunk, req) })
@@ -145,6 +152,7 @@ function rosPost(
     externalSignal?.addEventListener("abort", onExternalAbort)
 
     req = lib.request(options, (res) => {
+      watchRosResponseFailure(res, error => settle(() => reject(error)))
       let buf = ""
       res.setEncoding("utf8")
       res.on("data", (chunk: string) => { buf = appendRosBody(buf, chunk, req) })
@@ -199,6 +207,7 @@ function rosPut(
     }, timeoutMs)
 
     const req = lib.request(options, (res) => {
+      watchRosResponseFailure(res, error => { clearTimeout(timer); reject(error) })
       let buf = ""
       res.setEncoding("utf8")
       res.on("data", (chunk: string) => { buf = appendRosBody(buf, chunk, req) })
@@ -249,6 +258,7 @@ function rosDelete(
     }, timeoutMs)
 
     const req = lib.request(options, (res) => {
+      watchRosResponseFailure(res, error => { clearTimeout(timer); reject(error) })
       let body = ""
       res.setEncoding("utf8")
       res.on("data", (chunk: string) => { body = appendRosBody(body, chunk, req) })
@@ -296,6 +306,7 @@ function rosRawRequest(
     const lib = params.useSsl ? https : http
 
     const req = lib.request(options, (res) => {
+      watchRosResponseFailure(res, error => { clearTimeout(timer); reject(error) })
       const chunks: Buffer[] = []
       res.on("data", (chunk: Buffer) => { chunks.push(chunk) })
       res.on("end", () => {
@@ -351,6 +362,7 @@ function rosPatch(
     }, timeoutMs)
 
     const req = lib.request(options, (res) => {
+      watchRosResponseFailure(res, error => { clearTimeout(timer); reject(error) })
       let buf = ""
       res.setEncoding("utf8")
       res.on("data", (chunk: string) => { buf = appendRosBody(buf, chunk, req) })