diff --git a/src/web/app/common/scripts/stream.js b/src/web/app/common/scripts/stream.js
index cbdde8d2f..5296abfde 100644
--- a/src/web/app/common/scripts/stream.js
+++ b/src/web/app/common/scripts/stream.js
@@ -45,6 +45,8 @@ class Connection {
 	}
 
 	send(message) {
+		// TODO: バッファリングしてつぎ接続した時に送信する
+		if (this.state != 'connected') return;
 		this.socket.send(JSON.stringify(message));
 	}
 
diff --git a/src/web/app/desktop/tags/timeline-post.tag b/src/web/app/desktop/tags/timeline-post.tag
index 07cc66567..220b8441b 100644
--- a/src/web/app/desktop/tags/timeline-post.tag
+++ b/src/web/app/desktop/tags/timeline-post.tag
@@ -364,13 +364,24 @@
 			}
 		};
 
-		this.on('mount', () => {
+		this.capture = () => {
 			this.stream.send({
 				type: 'capture',
 				id: this.p.id
 			});
-
 			this.stream.event.on('post-updated', this.onStreamPostUpdated);
+		};
+
+		this.decapture = () => {
+			this.stream.send({
+				type: 'decapture',
+				id: this.p.id
+			});
+			this.stream.event.off('post-updated', this.onStreamPostUpdated);
+		};
+
+		this.on('mount', () => {
+			this.capture();
 
 			if (this.p.text) {
 				const tokens = this.p.ast;
@@ -393,12 +404,7 @@
 		});
 
 		this.on('unmount', () => {
-			this.stream.send({
-				type: 'decapture',
-				id: this.p.id
-			});
-
-			this.stream.event.off('post-updated', this.onStreamPostUpdated);
+			this.decapture();
 		});
 
 		this.reply = () => {
diff --git a/src/web/app/mobile/tags/timeline-post.tag b/src/web/app/mobile/tags/timeline-post.tag
index e0cffb62d..7f02dd487 100644
--- a/src/web/app/mobile/tags/timeline-post.tag
+++ b/src/web/app/mobile/tags/timeline-post.tag
@@ -340,13 +340,24 @@
 			}
 		};
 
-		this.on('mount', () => {
+		this.capture = () => {
 			this.stream.send({
 				type: 'capture',
 				id: this.p.id
 			});
-
 			this.stream.event.on('post-updated', this.onStreamPostUpdated);
+		};
+
+		this.decapture = () => {
+			this.stream.send({
+				type: 'decapture',
+				id: this.p.id
+			});
+			this.stream.event.off('post-updated', this.onStreamPostUpdated);
+		};
+
+		this.on('mount', () => {
+			this.capture();
 
 			if (this.p.text) {
 				const tokens = this.p.ast;
@@ -369,12 +380,7 @@
 		});
 
 		this.on('unmount', () => {
-			this.stream.send({
-				type: 'decapture',
-				id: this.p.id
-			});
-
-			this.stream.event.off('post-updated', this.onStreamPostUpdated);
+			this.decapture();
 		});
 
 		this.reply = () => {