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RL-ARM User's Guide
RL-RTX RL-FlashFS 
RL-TCPnet TCP Socket 
Opening TCP Connection TCP Active Open TCP Passive Open Sending TCP Data Example for Sending Data Multiple TCP Connections UDP Socket Opening UDP Connection Sending UDP Data When DHCP Enabled When ARP Cache Empty Example for Sending Data IP Multicasting Multiple UDP Connections Configuring TCPnet Static Configuration 
System Definitions Ethernet Network Interface PPP Network Interface SLIP Interface UDP Socket TCP Socket BSD Socket HTTP Server Telnet Server TFTP Server FTP Server DNS Client SMTP Client SNMP Agent Runtime Configuration Library Files Using RL-TCPnet Stand Alone With RTX Kernel 
Applications HTTP Web Server Script Language CGI Functions Ajax Support Using XML XML Example How it works SOAP Support SOAP Interface Large POST Messages Web Pages Default Page Error Pages Web on SD Card Web Update File System Interface Http Caching How it works Internal Web External Web Using RAM File System FCARM File Converter PRINT Directive NOPRINT Directive PAGEWIDTH Directive PAGELENGTH Directive ROOT Directive Telnet Server Command Line Interface Sending Reply Message Short Reply Long Reply Continuous Screen Update TFTP Server File System Interface FTP Server File System Interface Supported Commands SMTP Client SNMP Agent MIB Database MIB Interface MIB Entry MIB Table DNS Resolver Starting DNS Device Drivers Ethernet Driver Interrupt Mode Modem Driver Serial Driver Using Serial Link Cable Connection Modem Connection Windows Dial-up Add Direct Serial Link New Dial-up Connection Configure PPP Dial-up Configure SLIP Dial-up Debugging Enabling Debug Debug Level Redirecting Output Function Overview BSD Routines CGI Routines Ethernet Routines Error Function FTP Routines HTTP Routines IGMP Routines Miscellaneous Routines Modem Routines PPP Routines Serial Routines SLIP Routines SMTP Routines SNMP Routines System Functions TCP Routines Telnet Routines TFTP Routines UDP Routines 
RL-CAN RL-USB Example Programs Library Reference AppendixTCP Socket
This section describes the implementation of the Transmission Control Protocol (TCP) in RL-TCPnet. TCP runs on top of the Internet Protocol (IP). TCP is a connection-oriented and reliable full duplex protocol supporting a pair of byte streams, one for each direction. The two applications must establish a TCP connection before exchanging data. TCP retransmits data that do not reach the final destination due to errors or data corruption. Data are delivered in the sequence of their transmission.
This section contains the following topics:
- Opening TCP Connection describes the operation modes of TCP.
- TCP Active Open describes the steps to setup an open connection.
- TCP Passive Open describes the steps to setup a passive connection.
- Sending TCP Data gives hints on how to arrange data packets.
- Example for Sending Data lists the steps for creating a client application.
- Multiple TCP Connections lists the steps for creating a server application.
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