diff --git a/lib/core/base-client.ts b/lib/core/base-client.ts
index 2af8b1fe..9bcc0a9d 100644
--- a/lib/core/base-client.ts
+++ b/lib/core/base-client.ts
@@ -119,7 +119,7 @@ export class BaseClient extends EventEmitter {
 	/** 随心跳一起触发的函数，可以随意设定 */
 	protected heartbeat = NOOP
 	// 心跳定时器
-	private [HEARTBEAT]: NodeJS.Timeout
+	private [HEARTBEAT]?: NodeJS.Timeout
 	/** 数据统计 */
 	protected readonly statistics = {
 		start_time: timestamp(),
diff --git a/lib/friend.ts b/lib/friend.ts
index b20bb303..94bfd0b3 100644
--- a/lib/friend.ts
+++ b/lib/friend.ts
@@ -9,6 +9,7 @@ import { Sendable, PrivateMessage, buildMusic, MusicPlatform, Quotable, rand2uui
 import { buildSyncCookie, Contactable, highwayHttpUpload, CmdID } from "./internal"
 import { MessageRet } from "./events"
 import { FriendInfo } from "./entities"
+import { buildShare,type ShareConfig, type ShareContent } from "./message/share"
 
 type Client = import("./client").Client
 
@@ -150,10 +151,12 @@ export class User extends Contactable {
 
 	private _getRouting(file = false): pb.Encodable {
 		if (Reflect.has(this, "gid"))
-			return { 3: {
-				1: code2uin(Reflect.get(this, "gid")),
-				2: this.uid,
-			} }
+			return {
+				3: {
+					1: code2uin(<number>Reflect.get(this, "gid")),
+					2: this.uid,
+				}
+			}
 		return file ? { 15: { 1: this.uid, 2: 4 } } : { 1: { 1: this.uid } }
 	}
 
@@ -314,7 +317,7 @@ export class Friend extends User {
 		let friend = weakmap.get(info!)
 		if (friend) return friend
 		friend = new Friend(this, Number(uid), info)
-		if (info) 
+		if (info)
 			weakmap.set(info, friend)
 		return friend
 	}
@@ -351,9 +354,15 @@ export class Friend extends User {
 		await this.c.sendOidb("OidbSvc.0xb77_9", pb.encode(body))
 	}
 
+	/** 发送网址分享 */
+	async shareUrl(content: ShareContent, config: ShareConfig) {
+		const body = buildShare(this.uid, 0, content, config)
+		await this.c.sendOidb("OidbSvc.0xb77_9", pb.encode(body))
+	}
+
 	/** 设置备注 */
 	async setRemark(remark: string) {
-		const req = jce.encodeStruct([ this.uid, String(remark || "") ])
+		const req = jce.encodeStruct([this.uid, String(remark || "")])
 		const body = jce.encodeWrapper({ req }, "KQQ.ProfileService.ProfileServantObj", "ChangeFriendName")
 		await this.c.sendUni("ProfileService.ChangeFriendName", body)
 	}
@@ -426,7 +435,7 @@ export class Friend extends User {
 		} else {
 			file = String(file)
 			filesize = (await fs.promises.stat(file)).size
-			;[filemd5, filesha] = await fileHash(file)
+				;[filemd5, filesha] = await fileHash(file)
 			filename = filename ? String(filename) : path.basename(file)
 			filestream = fs.createReadStream(file, { highWaterMark: 524288 })
 		}
diff --git a/lib/group.ts b/lib/group.ts
index aa4b9ef0..73146bf9 100644
--- a/lib/group.ts
+++ b/lib/group.ts
@@ -8,6 +8,7 @@ import { Sendable, GroupMessage, Image, ImageElem, buildMusic, MusicPlatform, An
 import { Gfs } from "./gfs"
 import { MessageRet } from "./events"
 import { GroupInfo, MemberInfo } from "./entities"
+import { buildShare, type ShareConfig, type ShareContent } from "./message/share"
 
 type Client = import("./client").Client
 
@@ -140,7 +141,7 @@ export class Group extends Discuss {
 
 	/** 获取群头像url (history=1,2,3...) */
 	getAvatarUrl(size: 0 | 40 | 100 | 140 = 0, history = 0) {
-		return `https://p.qlogo.cn/gh/${this.gid}/${this.gid}${history?"_"+history:""}/` + size
+		return `https://p.qlogo.cn/gh/${this.gid}/${this.gid}${history ? "_" + history : ""}/` + size
 	}
 
 	/** 强制刷新资料 */
@@ -178,7 +179,7 @@ export class Group extends Discuss {
 			active_member_count: proto[37],
 			update_time: timestamp(),
 		}
-		info = Object.assign(this.c.gl.get(this.gid) || this._info || { }, info)
+		info = Object.assign(this.c.gl.get(this.gid) || this._info || {}, info)
 		this.c.gl.set(this.gid, info)
 		this._info = info
 		weakmap.set(info, this)
@@ -218,7 +219,7 @@ export class Group extends Discuss {
 						update_time: 0,
 					}
 					const list = this.c.gml.get(this.gid)!
-					info = Object.assign(list.get(v[0]) || { }, info)
+					info = Object.assign(list.get(v[0]) || {}, info)
 					if (this.c.gl.get(this.gid)?.owner_id === v[0])
 						info.role = "owner"
 					list.set(v[0], info)
@@ -256,6 +257,13 @@ export class Group extends Discuss {
 		await this.c.sendOidb("OidbSvc.0xb77_9", pb.encode(body))
 	}
 
+	/** 发送网址分享 */
+	async shareUrl(content: ShareContent, config: ShareConfig) {
+		const body = buildShare(this.gid, 1, content, config)
+		this.c.logger.trace('url share', body)
+		await this.c.sendOidb("OidbSvc.0xb77_9", pb.encode(body))
+	}
+
 	/**
 	 * 发送一条消息
 	 * @param source 引用回复的消息
@@ -312,7 +320,7 @@ export class Group extends Discuss {
 		this.c.logger.info(`succeed to send: [Group(${this.gid})] ` + converter.brief)
 		{
 			const { seq, rand, time } = parseGroupMessageId(message_id)
-			return { seq, rand, time, message_id}
+			return { seq, rand, time, message_id }
 		}
 	}
 
@@ -413,7 +421,7 @@ export class Group extends Discuss {
 	announce(content: string) {
 		return this._setting({ 4: String(content) })
 	}
-	private async _setting(obj: {[tag: number]: any}) {
+	private async _setting(obj: { [tag: number]: any }) {
 		const body = pb.encode({
 			1: this.gid,
 			2: obj
diff --git a/lib/message/share.ts b/lib/message/share.ts
new file mode 100644
index 00000000..23cc33bb
--- /dev/null
+++ b/lib/message/share.ts
@@ -0,0 +1,63 @@
+
+/**所有可选参数默认为QQ浏览器 */
+export interface ShareConfig {
+	appid?: number,
+	// style?: number,
+	appname?: string,
+	/**app签名hash */
+	appsign?: string,
+}
+
+export interface ShareContent {
+	title: string,
+	summary?: string,
+	/**从消息列表中看到的文字,默认为 "[分享]"+title */
+	abstract?: string,
+	/**预览图网址, 默认为QQ浏览器图标,似乎对域名有限制 */
+	preview?: string,
+	/**跳转链接, 没有则发不出 */
+	jumpUrl: string,
+	musicUrl?: string
+}
+
+enum app {
+	qq = 100446242,
+	mi = 1105414497,
+	quark = 1105781586
+}
+
+
+const defaultConfig: Required<ShareConfig> = {
+	appid: app.qq,
+	// style: 4,//有音乐4 没音乐0
+	appname: 'com.tencent.mtt',
+	appsign: 'd8391a394d4a179e6fe7bdb8a301258b',
+}
+/**
+ * @param target 目标qq
+ * @param bu 0为私聊 1为群聊
+ */
+export function buildShare(target: number, bu: 0 | 1, content: ShareContent, config: ShareConfig = {}) {
+	config = { ...defaultConfig, ...config }
+	return {
+		1: config.appid,
+		2: 1,
+		3: content.musicUrl ? 4 : 0,
+		5: {
+			1: 1,
+			2: "0.0.0",
+			3: config.appname,
+			4: config.appsign
+		},
+		10: bu,
+		11: target,
+		12: {
+			10: content.title,
+			11: content.summary,
+			12: content.abstract,
+			13: content.jumpUrl,
+			14: content.preview /* ?? 'https://tangram-1251316161.file.myqcloud.com/files/20210721/e50a8e37e08f29bf1ffc7466e1950690.png' */,
+			16: content.musicUrl,
+		}
+	}
+}
\ No newline at end of file