January 1995
Intermediate to advanced
1200 pages
31h 3m
English
Content preview from TCP/IP Illustrated
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Chapter 29. TCP Input
29.1. Introduction
This chapter continues the discussion of TCP input processing, picking up where the previous chapter left off. Recall that the final test in Figure 28.37 was that either the ACK flag was set or, if not, the segment was dropped.
The ACK flag is handled, the window information is updated, the URG flag is processed, and any data in the segment is processed. Finally the FIN flag is processed and tcp_output is called, if required.
29.2. ACK Processing Overview
We begin this chapter with ACK processing, a summary of which is shown in Figure 29.1. The SYN_RCVD state is handled specially, followed by common processing for all remaining states. (Remember that a received ACK in either ...
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