netdev - Re: ftp on udp and tcp .

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Message-ID: <AANLkTinuDmi2e1ZIFwL9qNKv_QcjVIMr56m9QuzBeyLI@mail.gmail.com>
Date:	Thu, 17 Jun 2010 08:01:35 +0530
From:	Narendra Choyal <narendrachoyal@...il.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	ratheesh k <ratheesh.ksz@...il.com>, netdev@...r.kernel.org,
	linux-net@...r.kernel.org
Subject: Re: ftp on udp and tcp .

TCP handles segmentation and bandwidth/congestion management.  It
recovers from packet loss and reordering. Recent implementations are
also quite resilient to address spoofing.  The downsides are higher
latency (potentially very high when recovering from packet loss), higher
setup cost (3-way handshake), and lack of multicast support.

UDP does none of that.  It gives you flexibility and control, but the
downside is you have to handle all of those problems yourself.

Its nice but.
Initial checking of availability for both active port & passive port.
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