List of Figures

• UNIX History & Directions
• Principle Methods of Communication
• Client/Server Model
• Typical Scenario of Client/Server Interaction
• The Principle of most local IPC Facilities
• Execution of a Signal Handler
• The Result of the pipe() System Call
• A Pipe after a fork() System Call
• Resulting Pipe
• The Principle of Message Switching
• Layered Naming Contexts
• Little vs. Big Endian with 0xABCD as Example Number
• A simple Protocol Stack
• Adding Protocol Control Information in each Level
• The ISO-OSI 7 Layer Reference Model
• Communication between OSI Layers
• The Components of the Internet Protocol Suite
• Encapsulation of Data as it goes down the Protocol Stack
• OSI Model versus TCP/IP Protocol
• Internet Address Classes
• The UNIX Port Model
• The Demultiplexing of a received Ethernet Frame
• IP Datagram, showing the Fields in the IP Header
• UDP Datagram, showing the Fields in the UDP Header
• TCP Segment, showing the Fields in the TCP Header
• Socket System Calls, Connection-Oriented Protocol
• Socket System Calls, Connectionless Protocol
• How Ports, Addresses, and Sockets fit together
• TLI Function Calls, Connection-Oriented Protocol
• TLI Function Calls, Connectionless Protocol
• Calls and Messages in an RPC. Each ellipse represents a single process, with the shaded portion being the stub.
• Throughput of Pipes
• Time per read() System Call for Pipes
• Throughput of FIFOs
• Time per read() System Call for FIFOs
• Throughput of Messages
• Time per msgsnd() System Call
• Time needed to create, attach, detach and remove a Shared Memory Region
• Throughput of local Sockets created by the socketpair() System Call
• Time for read() System Calls for local Sockets
• Throughput of UDP on one computer
• UDP Throughput between different Computers
• Time per sendto() and recvfrom() System Calls (both executed in client and server process) on one Computer
• Time per sendto() and recvfrom() System Calls (both executed in client and server process) between different Computers
• Throughput of a local TCP Connection
• Throughput of a TCP Connection between different Computers
• Time for read() System Calls of a TCP Connection on one Computer
• Time for read() System Calls of a TCP Connection between different Computers
• A STREAM with one processing Module
• The basic IPng Header