feat(hosts): connect to saved hosts through a daemon

packages/client/src/node/buffering.ts

@@ -0,0 +1,22 @@
+/** Counts bytes until the socket's send callback, shared by all links owned by a daemon. */
+export class HostTransportBudget {
+  private used = 0;
+  constructor(readonly limit = 64 * 1024 * 1024) {}
+  get bufferedBytes(): number {
+    return this.used;
+  }
+  reserve(bytes: number): () => void {
+    if (bytes > this.limit - this.used)
+      throw Object.assign(new Error("Connected host buffer limit reached"), {
+        code: "resource_limit",
+      });
+    this.used += bytes;
+    let released = false;
+    return () => {
+      if (!released) {
+        released = true;
+        this.used -= bytes;
+      }
+    };
+  }
+}