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Technical Support
On-Line Manuals
RL-ARM User's Guide (MDK v4)
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 RL-TCPnet
Static Configuration
System Definitions
Ethernet Network Interface
PPP Network Interface
SLIP Network Interface
UDP Socket
TCP Socket
BSD Socket
HTTP Server
Telnet Server
TFTP Server
TFTP Client
FTP Server
FTP Client
DNS Client
SMTP Client
SNMP Agent
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Error Function
Runtime Configuration
Library Files
Using RL-TCPnet
Stand Alone
With RTX Kernel
Event Driven Operation
IP Address Assignment
Ethernet Interface
PPP Interface
SLIP Interface
Localhost
Applications
HTTP 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
Multi-user Authentication
Using RAM File System
FCARM File Converter
PRINT Directive
NOPRINT Directive
PAGEWIDTH Directive
PAGELENGTH Directive
ROOT Directive
Telnet Server
Command Line Interface
Multi-user Authentication
Sending Reply Message
Short Reply
Long Reply
Continuous Screen Update
TFTP Server
File System Interface
TFTP Client
File System Interface
FTP Server
File System Interface
Multi-user Authentication
Supported Commands
FTP Client
File System Interface
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
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
Appendix
SOAP Interface
The SOAP messages in HTTP consist of the POST request, submitted by the client, and a response generated by the Web server. The Embedded Web server handles the SOAP messages different. Instead of processing them internally and notifying the user via user callback functions, the Web server delivers a complete SOAP message to the user via the callback function.
The SOAP messages in general are large. Embedded systems that run the Web server with SOAP, need much more RAM for message buffering and processing. A typical configuration would have:
- a few MBytes of RAM
- an SD Card for deploying web service application, for example the Silverlight.
The following extensions have been added to the Web server:
- the cgi_process_data function has been extended with the code 4 and 5 to allow processing fragmented large POST messages.
- the Content-Type http header for XML-encoded POST requests is buffered. Function http_get_content_type returns a pointer to the Content-Type string, which was received in the XML POST request.
- the Content-Type header for the response can be defined by the user in the cgx_content_type function.
- the http_get_session function is used to identify which Web server session has called a cgi_process_data callback function, if two or more clients have sent XML-POST requests at the same time.
- the HTTP Caching improves the Web server performance a lot when serving large web service applications.
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