diff --git a/packages/linejs/base/push/conn.ts b/packages/linejs/base/push/conn.ts
index 7797b00..edc4eaa 100644
--- a/packages/linejs/base/push/conn.ts
+++ b/packages/linejs/base/push/conn.ts
@@ -1,3 +1,4 @@
+import { PushProtocol } from "./protocol.ts";
 import { BaseClient } from "../core/mod.ts";
 import {
 	LegyH2PingFrame,
@@ -16,7 +17,7 @@ export class Conn {
 	cacheData: Uint8Array = new Uint8Array(0);
 	notFinPayloads: Record<number, Uint8Array> = {};
 	reqStream?: ReadableStreamWriter<Uint8Array> & { abort: AbortController };
-	resStream?: ReadableStream<Uint8Array>;
+	resStream?: ReadableStream<Uint8Array<ArrayBufferLike>>;
 	private _lastSendTime = 0;
 	private _closed = false;
 
@@ -39,7 +40,7 @@ export class Conn {
 
 		const chunks: Uint8Array[] = [];
 		const encoder = new TextEncoder();
-		const stream = new ReadableStream<Uint8Array>({
+		const stream = new ReadableStream<Uint8Array<ArrayBufferLike>>({
 			start(c) {
 				controller = c;
 			},
@@ -129,7 +130,7 @@ export class Conn {
 	}
 
 	async writeRequest(requestType: number, data: Uint8Array) {
-		const d = this.manager.buildRequest(requestType, data);
+		const d = PushProtocol.buildRequest(requestType, data);
 		await this.writeByte(d);
 	}
 
diff --git a/packages/linejs/base/push/connManager.ts b/packages/linejs/base/push/connManager.ts
index 82ebc64..2a275b1 100644
--- a/packages/linejs/base/push/connManager.ts
+++ b/packages/linejs/base/push/connManager.ts
@@ -1,3 +1,4 @@
+import { PushProtocol } from "./protocol.ts";
 import { LegyH2PushFrame } from "./connData.ts";
 import { Conn } from "./conn.ts";
 import { BaseClient } from "@evex/linejs/base";
@@ -6,7 +7,6 @@ import { TCompactProtocol } from "npm:thrift@^0.20.0";
 
 import { TMoreCompactProtocol } from "../thrift/readwrite/tmc.ts";
 
-// GOMI:
 import {
 	PartialDeep,
 	SquareService_fetchMyEvents_args as gen_SquareService_fetchMyEvents_args,
@@ -31,6 +31,7 @@ function gen_m(ss = [1, 3, 5, 6, 8, 9, 10]) {
 	return i;
 }
 
+
 export interface ReadableStreamWriter<T> {
 	stream: ReadableStream<T>;
 	enqueue(chunk: T): void;
@@ -150,7 +151,7 @@ export class ConnManager {
 			.getHeader();
 		tosendHeaders["content-type"] = "application/octet-stream";
 		tosendHeaders["accept"] = "application/octet-stream";
-		const m = gen_m(initServices);
+		const m = PushProtocol.genServiceBitmask(initServices);
 		this.log(`Using \`m=${m}\` on \`/PUSH\``);
 		const host = this.client.request.endpoint;
 		const port = 443;
@@ -158,16 +159,6 @@ export class ConnManager {
 		return _conn;
 	}
 
-	buildRequest(service: number, data: Uint8Array): Uint8Array {
-		const len = data.length;
-		const out = new Uint8Array(2 + 1 + len);
-		out[0] = (len >> 8) & 0xff;
-		out[1] = len & 0xff;
-		out[2] = service & 0xff;
-		out.set(data, 3);
-		return out;
-	}
-
 	async buildAndSendSignOnRequest(
 		conn: Conn,
 		serviceType: number,
@@ -203,12 +194,7 @@ export class ConnManager {
 			);
 			methodName = "sync";
 		}
-		const header = new Uint8Array(2 + 1 + 1 + 2 + req.length);
-		header.set(idBuf, 0);
-		header[2] = serviceType & 0xff;
-		header[3] = 0;
-		header[4] = (req.length >> 8) & 0xff;
-		header[5] = req.length & 0xff;
+		const header = PushProtocol.buildSignOnHeader(id, serviceType, req.length);
 		header.set(req, 6);
 		this.SignOnRequests[id] = [serviceType, methodName, null];
 		this.log(
diff --git a/packages/linejs/base/push/protocol.ts b/packages/linejs/base/push/protocol.ts
new file mode 100644
index 0000000..a2a7122
--- /dev/null
+++ b/packages/linejs/base/push/protocol.ts
@@ -0,0 +1,32 @@
+export class PushProtocol {
+	static genServiceBitmask(ss: number[] = [1, 3, 5, 6, 8, 9, 10]): number {
+		let i = 0;
+		for (const s of ss) i |= 1 << (s - 1);
+		return i;
+	}
+
+	static buildRequest(service: number, data: Uint8Array): Uint8Array {
+		const len = data.length;
+		const out = new Uint8Array(2 + 1 + len);
+		out[0] = (len >> 8) & 0xff;
+		out[1] = len & 0xff;
+		out[2] = service & 0xff;
+		out.set(data, 3);
+		return out;
+	}
+
+	static buildSignOnHeader(
+		id: number,
+		serviceType: number,
+		payloadLength: number,
+	): Uint8Array {
+		const header = new Uint8Array(2 + 1 + 1 + 2);
+		header[0] = (id >> 8) & 0xff;
+		header[1] = id & 0xff;
+		header[2] = serviceType & 0xff;
+		header[3] = 0;
+		header[4] = (payloadLength >> 8) & 0xff;
+		header[5] = payloadLength & 0xff;
+		return header;
+	}
+}