http - 在 HTTP 中维护同时连接？

Question

我需要维护与 Web 服务器的多个事件的长池 AJAX 连接。

我知道大多数浏览器不允许超过 2 个同时连接到同一服务器。这就是HTTP 1.1 protocol状态:

Clients that use persistent connections SHOULD limit the number of simultaneous connections that they maintain to a given server. A single-user client SHOULD NOT maintain more than 2 connections with any server or proxy. A proxy SHOULD use up to 2*N connections to another server or proxy, where N is the number of simultaneously active users. These guidelines are intended to improve HTTP response times and avoid congestion.

假设我有 2 个子域 Server1.MyWebSite.Com 和 Server2.MyWebSite.Com 共享相同的 IP 地址，我能否同时建立 2x2 连接？

Answer 1

看来同一 IP 上的不同主机名可以是 useful .由于 Same Origin Policy，您在建立 AJAX 连接时可能会遇到问题.

编辑:根据您的 document.domain 问题(来自 Google's Browser Security Handbook):

Checks for XMLHttpRequest targets do not take document.domain into account...