diff --git a/e2e/server/handler/ice/restart.ts b/e2e/server/handler/ice/restart.ts
index b265fea7..05057862 100644
--- a/e2e/server/handler/ice/restart.ts
+++ b/e2e/server/handler/ice/restart.ts
@@ -38,7 +38,10 @@ export class ice_restart_answer {
         const offer = await this.pc.createOffer();
         this.pc.setLocalDescription(offer);
         accept(this.pc.localDescription);
+        await this.pc.iceConnectionStateChange.watch((e) => e === "connected");
+        this.pc.dataChannels[0].send("ping" + "pong" + "pang");
       }
+      break;
     }
   }
 }
diff --git a/e2e/server/main.ts b/e2e/server/main.ts
index 714a8632..76b50d2c 100644
--- a/e2e/server/main.ts
+++ b/e2e/server/main.ts
@@ -57,6 +57,7 @@ import {
   mediachannel_simulcast_answer,
   mediachannel_simulcast_offer,
 } from "./handler/mediachannel/simulcast";
+import { ice_restart_answer } from "./handler/ice/restart";
 
 const app = express();
 app.use(express.json() as never);
@@ -116,6 +117,7 @@ server.on("connectionrequest", async (_, accept) => {
     mediachannel_addtrack_removefirst_addtrack:
       new mediachannel_addtrack_removefirst_addtrack(),
     mediachannel_offer_replace_second: new mediachannel_offer_replace_second(),
+    ice_restart_answer: new ice_restart_answer(),
   };
 
   const transport = accept();
diff --git a/e2e/tests/ice/restart.test.ts b/e2e/tests/ice/restart.test.ts
new file mode 100644
index 00000000..b419c6ac
--- /dev/null
+++ b/e2e/tests/ice/restart.test.ts
@@ -0,0 +1,122 @@
+import { peer, sleep, waitVideoPlay } from "../fixture";
+
+describe("ice/restart", () => {
+  it(
+    "answer",
+    async () =>
+      new Promise<void>(async (done) => {
+        const label = "ice_restart_answer";
+
+        if (!peer.connected) await new Promise<void>((r) => peer.on("open", r));
+        await sleep(100);
+
+        const pc = new RTCPeerConnection({
+          iceServers: [{ urls: "stun:stun.l.google.com:19302" }],
+        });
+        pc.ondatachannel = ({ channel }) => {
+          channel.onmessage = async ({ data }) => {
+            if (data === "ping" + "pong") {
+              const offer = await peer.request(label, {
+                type: "restart",
+              });
+              await pc.setRemoteDescription(offer);
+              await pc.setLocalDescription(await pc.createAnswer());
+
+              peer
+                .request(label, {
+                  type: "answer",
+                  payload: pc.localDescription,
+                })
+                .catch(() => {});
+            }
+
+            if (data === "ping" + "pong" + "pang") {
+              console.log(data);
+              pc.close();
+              done();
+            }
+          };
+          channel.send("ping");
+        };
+        pc.ontrack = (ev) => {
+          waitVideoPlay(ev.track);
+        };
+        pc.onicecandidate = ({ candidate }) => {
+          if (candidate) {
+            peer
+              .request(label, {
+                type: "candidate",
+                payload: candidate,
+              })
+              .catch(() => {});
+          }
+        };
+        peer.on("request", async (request, accept) => {
+          if (request.method !== label) return;
+          const candidate = request.data;
+          await pc.addIceCandidate(candidate);
+          accept();
+        });
+
+        const offer = await peer.request(label, {
+          type: "init",
+        });
+        await pc.setRemoteDescription(offer);
+        await pc.setLocalDescription(await pc.createAnswer());
+
+        peer
+          .request(label, {
+            type: "answer",
+            payload: pc.localDescription,
+          })
+          .catch(() => {});
+      }),
+    10 * 1000,
+  );
+
+  it(
+    "offer",
+    async () =>
+      new Promise<void>(async (done) => {
+        const label = "ice_trickle_offer";
+
+        if (!peer.connected) await new Promise<void>((r) => peer.on("open", r));
+        await sleep(100);
+
+        const pc = new RTCPeerConnection({
+          iceServers: [{ urls: "stun:stun.l.google.com:19302" }],
+        });
+        const channel = pc.createDataChannel("dc");
+        channel.onopen = () => {
+          channel.send("ping");
+        };
+        channel.onmessage = ({ data }) => {
+          expect(data).toBe("ping" + "pong");
+          pc.close();
+          done();
+        };
+        pc.onicecandidate = ({ candidate }) => {
+          peer
+            .request(label, {
+              type: "candidate",
+              payload: candidate,
+            })
+            .catch(() => {});
+        };
+        peer.on("request", async (request, accept) => {
+          if (request.method !== label) return;
+          const candidate = request.data;
+          await pc.addIceCandidate(candidate);
+          accept();
+        });
+
+        await pc.setLocalDescription(await pc.createOffer());
+        const answer = await peer.request(label, {
+          type: "init",
+          payload: pc.localDescription,
+        });
+        await pc.setRemoteDescription(answer);
+      }),
+    10 * 1000,
+  );
+});