feat(framework): net 候选服务器轮询策略

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-28 14:23:41 +08:00
parent 08d41cdec1
commit 79d0071645
2 changed files with 53 additions and 0 deletions
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+/** 候选服务器轮询。docs/protocol/01 §7.3。 */
+export class ReconnectPolicy {
+  private servers: string[];
+  private index = 0;
+  private failCount = 0;
+  constructor(servers: string | string[], private rotateEvery: number) {
+    this.servers = Array.isArray(servers) ? servers.slice() : [servers];
+  }
+  current(): string { return this.servers[this.index]; }
+  /** 记一次连接失败，按 rotateEvery 轮换候选，返回新的 current。 */
+  onFailure(): string {
+    this.failCount++;
+    if (this.servers.length > 1 && this.failCount % this.rotateEvery === 0) {
+      this.index = (this.index + 1) % this.servers.length;
+    }
+    return this.current();
+  }
+  reset(): void { this.failCount = 0; }
+  /** 服务器切换指令：改用指定地址。docs/protocol/01 §7.4。 */
+  setCurrent(server: string): void { this.servers = [server]; this.index = 0; this.failCount = 0; }
+}