table and reducer updates

spacetimedb/src/index.ts

@@ -412,6 +412,31 @@ export const leave_voice = spacetimedb.reducer((ctx) => {
 export const send_sdp_offer = spacetimedb.reducer(
   { receiver: t.identity(), sdp: t.string(), channelId: t.u64() },
   (ctx, { receiver, sdp, channelId }) => {
+    // Clear any existing offers/answers/candidates between this pair in both directions
+    // to ensure a fresh negotiation state.
+    
+    // Outgoing from sender to receiver
+    for (const offer of ctx.db.sdp_offer.by_sender.filter(ctx.sender)) {
+      if (offer.receiver.isEqual(receiver)) ctx.db.sdp_offer.id.delete(offer.id);
+    }
+    for (const answer of ctx.db.sdp_answer.by_sender.filter(ctx.sender)) {
+      if (answer.receiver.isEqual(receiver)) ctx.db.sdp_answer.id.delete(answer.id);
+    }
+    for (const cand of ctx.db.ice_candidate.by_sender.filter(ctx.sender)) {
+      if (cand.receiver.isEqual(receiver)) ctx.db.ice_candidate.id.delete(cand.id);
+    }
+    
+    // Incoming to sender from receiver (stale messages from previous negotiations)
+    for (const offer of ctx.db.sdp_offer.by_receiver.filter(ctx.sender)) {
+      if (offer.sender.isEqual(receiver)) ctx.db.sdp_offer.id.delete(offer.id);
+    }
+    for (const answer of ctx.db.sdp_answer.by_receiver.filter(ctx.sender)) {
+      if (answer.sender.isEqual(receiver)) ctx.db.sdp_answer.id.delete(answer.id);
+    }
+    for (const cand of ctx.db.ice_candidate.by_receiver.filter(ctx.sender)) {
+      if (cand.sender.isEqual(receiver)) ctx.db.ice_candidate.id.delete(cand.id);
+    }
+
     ctx.db.sdp_offer.insert({ id: 0n, sender: ctx.sender, receiver, sdp, channel_id: channelId });
   }
 );
@@ -419,6 +444,11 @@ export const send_sdp_offer = spacetimedb.reducer(
 export const send_sdp_answer = spacetimedb.reducer(
   { receiver: t.identity(), sdp: t.string(), channelId: t.u64() },
   (ctx, { receiver, sdp, channelId }) => {
+    for (const answer of ctx.db.sdp_answer.by_sender.filter(ctx.sender)) {
+      if (answer.receiver.isEqual(receiver)) {
+        ctx.db.sdp_answer.id.delete(answer.id);
+      }
+    }
     ctx.db.sdp_answer.insert({ id: 0n, sender: ctx.sender, receiver, sdp, channel_id: channelId });
   }
 );