はてなブックマーク - Fasterfoxが最強すぎる件 - 真性引き篭もり が盛り上がってたので,机上の話だけですが,いまさら書いてみます。 RFC (2616) での記述 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