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Web and WS based Embedded Systems
- 2. Web 弍舒亰亳舒仆亳 弌 弌 仗仂亟亟亢舒 web 于 亳 仗仂亰于仂仍磦舒 仂亟舒仍亠亠仆仂 仍亠亟亠仆亠 亳 从仂仆仂仍.
- 3. WS 弍舒亰亳舒仆亳 弌 弌 仄仂亢亠 亟舒 亳亰于仍亳舒 亟舒仆仆亳 仗亠亰 web 仂 亟亞亳 弌 亳 亟舒 亳仄 仗亠亟仂舒于 亟舒仆仆亳.
- 4. 亟亠仆亳亳从舒亳 仆舒 亠亳 URI Uniform Resource Identifier http://user:pass@example.com:8080/path/file?query=test#anchor 仗舒仂仍舒 仗仂
- 5. HTTP 亰舒磦从亳 GET 亰舒磦从舒 亰舒 仗仂仍舒于舒仆亠 仆舒 亠; POST 亰舒磦从舒 亰舒 仗亠亟舒于舒仆亠 仆舒 亟舒仆仆亳 从仄 亟舒亟亠仆 亠; PUT 亰舒磦从舒 亰舒 仗仂舒于礌亠 仆舒 亠 仆舒 亟舒亟亠仆 URI; DELETE 亰舒磦从舒 亰舒 亳亰亳于舒仆亠 仆舒 亠.
- 6. 弌从舒 仆舒 HTTP 亰舒磦从舒 亰舒亞仍舒于仆舒 舒 (header) 仗仂亟亟亢舒仆亳 亳仗仂于亠 (MIME); 仗仂亟亟亢舒仆亳 从仂亟亳舒仆亳 (encoding); 仗仂亟亟亢舒仆亳 从仂亟仂于亳 舒弍仍亳亳 (charset); 亟舒舒 亳 舒; 亳亟亠仆亳亳从舒亳 仆舒 仗仂亠弍亳亠仍; 磿仂 仆舒 仂弍亠仆亳亠仂 (body)
- 7. HTTP GET GET /DSCC/index.php HTTP/1.1 Host: 192.168.2.98:8080 User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Language: en-us,en;q=0.7,bg;q=0.3 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Connection: keep-alive ===================================================================================== HTTP/1.1 302 Found Date: Tue, 06 Mar 2007 21:58:11 GMT Server: Apache/2.0.59 (Unix) PHP/4.3.4 Content-Type: text/html b9d <html> <head></head> <body></body> </html>. 0
- 8. HTTP POST POST /DSCC/login.php HTTP/1.1 Host: 192.168.2.98:8080 User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Connection: keep-alive Referer: http://192.168.2.98:8080/DSCC/login.php Content-Type: application/x-www-form-urlencoded Content-Length: 26 user=kakanakov&pass=* ================================================================================ HTTP/1.1 302 Found Date: Wed, 07 Mar 2007 00:00:03 GMT Server: Apache/2.0.59 (Unix) PHP/4.3.4 Cache-Control: no-store, no-cache Transfer-Encoding: chunked Content-Type: text/html 572 <html> <head></head> <body></body> </html>
- 9. HTTP 从仂亟仂于亠 仆舒 仂亞仂于仂亳亠 1xx 亳仆仂仄舒亳仂仆仆亳: 100 Continue; 101 Switching protocol; 2xx 仗亠: 200 (OK); 201 (Created); 202 (Accepted); 204 (No New Content); 3xx 仗亠仆舒仂于舒仆亠: 301 (Moved Permanently); 302 (Moved Temporarily); 4xx 从仍亳亠仆从舒 亞亠从舒: 400 (Bad Request); 401(Unauthorized); 403 (Forbidden); 404 (Not Found); 5xx 亞亠从舒 仗亳 于舒: 500 (Internal Server Error); 501 (Not Implemented); 503 (Service Unavailable).
- 10. MIME 亳仗仂于亠 个仂仄舒: MIME type ::= type / sybtype 仆仂于仆亳 亳仗仂于亠: text 亠从仂于舒 亳仆仂仄舒亳; image - 亳亰仂弍舒亢亠仆亳; video - 于亳亟亠仂; audio - 舒亟亳仂; application 仂弍亠从亳, 从仂亳仂 亠 仂弍舒弍仂于舒 亳亰于仆 弍舒亰亠舒; multipart 仂弍亠仆亳亠 亟亢舒仂 仗仂于亠亠 仂 亠亟仆舒 舒. 亳仄亠亳: text/html; text/plain; text/css; image/gif; image/jpeg; image/bmp; video/mpeg; audio/x-mpeg; application/pdf; application/msword; application/zip; application/octet-stream; multipart/mixed.
- 11. CGI 仄仂亟亠仍 舒亰亠舒 仗亠亟舒于舒 亟舒仆仆亳亠 从仄 于舒, 亰舒亠亟仆仂 亳仄亠仂 亳 仗 亟仂 舒亶仍舒, 从仂亶仂 磡于舒 亟舒 亞仂 仂弍舒弍仂亳 仄亠仂 亟舒 于仆亠 舒仄亳 舒亶仍, 于 亞仂 舒亳舒 亳 于舒 亠亰仍舒舒 仂 亳亰仗仍仆亠仆亳亠仂 仄. 仄亠仂 舒仆亟舒仆亳亠 于仂亟亳 亳 亳亰仂亟 仆舒 仗仂亞舒仄舒舒 亟舒 舒 从仍舒于亳舒舒 亳 仄仂仆亳仂, 亠 舒 仗亠仆舒仂亠仆亳 从仄 Web 于舒.
- 12. 舒弍仂舒 CGI 舒亶-仍亠从仂仂 仄 仗仂磦仍亠仆亳亠 亠 SSI. 亳 仆亠亞仂 舒仆亳舒舒 亠 仆舒仗亳舒仆舒 从舒仂 舒弍仍仂仆 亳 舒仄仂 仆舒 仂仗亠亟亠仍亠仆亳 仄亠舒 亠 仗仂舒于 亠仍亠仄亠仆亳, 从仂亳仂 亠 亰舒仄亠仆 仗亳 亳亰仗仍仆亠仆亳亠 仆舒 CGI 从亳仗舒. 丐仂亰亳 仄仂亟亠仍 亠 仗亳仍舒亞舒 仗亳 Servlet 亠仆仂仍仂亞亳舒 仆舒 Java. 仂弍仍亠仄 仆亠亞仂 亠 仆亠仂弍仂亟亳仄仂舒 仗仂于亠亠仂 亳仆仂仄舒亳 亟舒 亠 仂仗亳于舒 于 从仂亟舒 仆舒 从亳仗舒.
- 13. Web Services 丐仂于舒 亠 web 舒仆亳舒 仗亠亟仆舒亰仆舒亠仆舒 亰舒 仗仂亠 (仗仂亞舒仄舒), 仆亠 亰舒 仂于亠从 (machine- to-machine). Web 仍亞亳亠 亠 亳亰亞舒亢亟舒 仗仂 仂亞 仄仂亟亠仍 亳 舒亳亠从舒, 亰舒仂仂 仆礆舒 仂于亠从, 从仂亶仂 亟舒 亞亳 亠亠. Web 仍亞亳亠 舒 仆亠亰舒于亳亳仄亳 仂 仗亳仍仂亢仆亳 仗仂仂从仂仍, 从仂亶仂 亞亳 舒仆仗仂亳舒. 亰仗仂仍亰于舒 亠 XML, 亰舒仂仂 亠 舒仄仂仂仗亳于舒 亠.
- 14. Rest WS REpresentational State Transfer 丐仂于舒 亠 舒亳亠从舒 亰舒 亰亟舒于舒仆亠 仆舒 web 仍亞亳, 仆亠 亳仆仄亠仆. 舒 舒亰仍亳从舒 仂 SOAP WS 仆亠 亠 亳亰亳从于舒 仆仂于 仂仄舒 仆舒 仂弍亠仆亳舒. 丐亳仗舒 仆舒 亠亳亠 亠 仗亠仗仂于舒 亟舒 亠 XML, 仆仂 仄仂亢亠 亟舒 弍亟亠 于亠从亳 MIME 亳仗. 亠亳亠 亠 亳亟亠仆亳亳亳舒 URI. 舒 弍舒亰舒舒 仆舒 CGI 亠 亞亠仆亠亳舒 仂弍亠从亳 亟亳仆舒仄亳仆仂 亟亢舒仆亳亠.
- 15. WS: REST vs. SOAP REST web services are: Lightweight not a lot of extra xml markup Human Readable Results Easy to build no toolkits required Less bandwidth SOAP also has some advantages: Easy to consume sometimes Rigid type checking, adheres to a contract Development tools WS Security WS - Discovery
- 16. 亳仄亠亳 Apache CGI C/C++, Perl, Bash ... Web Services - gSOAP. IPC@Chip CGI CGI API; Web services? DSTINI HttpServer dynamic pages? Servlets?
- 17. Apache CGI Modules mod_alias mod_cgi Environment ScriptAlias /cgi-bin/ somedir <Directory somedir> Options +ExecCGI </Directory> Programming Language C/C++: http://www.gnu.org/software/cgicc/ Perl: http://search.cpan.org/~smylers/CGI-Lite-2.02/Lite.pm Bash: http://www.yolinux.com/TUTORIALS/LinuxTutorialCgiShellScript.html
- 18. gSOAP toolkit 丐仂于舒 亠 亳仆仄亠仆 亰舒 亰亟舒于舒仆亠 仆舒 SOAP/XML web 仍亞亳. 亠仆亠亳舒 仂 从仂亟 仆舒 弍舒亰舒舒 仆舒 仂仗亳舒仆亳亠 仆舒 仍亞舒, 从仂亶仂 仗仂亰于仂仍磦舒 仂弍舒弍仂从舒舒 仆舒 SOAP 仗舒从亠舒 亳 亟亠从仂亟亳舒仆亠 仆舒 XML 仂弍亠仆亳亠仂. 仂亟仂弍仆仂 仆舒 RPC 于亰于舒 仗仂弍亳亠仍从亳 从仂亟 WS 仗仂亠亟亳亠 亰舒 从仂仄仆亳从舒亳 亳 仂弍于亰于舒仆亠 仆舒 仗仂亠弍亳亠仍从亳亠 亳仗仂于亠 XML 从亳. 仗亠从亳, 亠 亠 仗亠亟仆舒亰仆舒亠仆 亰舒 C/C++ 亳仄舒 于亞舒亟亠仆 garbage collector.
- 19. gSOAP 仍亳亠仆 仂亟舒于舒仄亠 WSDL 仂仗亳舒仆亳亠仂 仆舒 gSOAP importer 亳 仂亶 亰亟舒于舒 亠亟 舒亶仍 从仂仄仗仂仆亠仆亳亠 仆舒 仍亞舒舒. gSOAP 从仂仄仗亳仍舒仂 亰亟舒于舒 仂 仂亰亳 亠亟 舒亶仍 仗仂从亳 仂弍亠从 亳仍亳 RPC 弍. 从仂 亳仄舒 仗仂亠弍亳亠仍从亳 亳仗仂于亠, 亠 磡于舒 亟舒 弍亟舒 仂仗亳舒仆亳 于 WSDL type 亠从亳舒 亳仍亳 亟舒 亠 仗仂亟舒亟舒 从舒仂 亟仂仗仍仆亳亠仍亠仆 亠亟 舒亶仍.
- 20. gSOAP 于 舒 亰亟舒于舒仆亠仂 仆舒 仍亞舒舒 仄仂亢亠 亟舒 亰亟舒亟亠仄 亠亟 舒亶仍, 从仂亶仂 仂仗亳于舒 从仂仄仗仂仆亠仆亳亠 仆舒 仍亞舒舒 从舒仂 仗仂仂亳仗亳 仆舒 仆从亳亳 亳 从亳 仂 亟舒仆仆亳 亳 亟舒 亞仂 从仂仄仗仍亳仍亳舒仄亠 gSOAP. gSOAP 从仂仄仗亳仍舒仂 亰亟舒于舒 从亠仍亠仂仆 亳 WSDL 舒亶仍, 仂仗亳于舒 仍亞舒舒. 丕仍亞舒舒 仄仂亢亠 亟舒 亠 仂仗亳舒仆舒 亳 仆舒 WSDL 亳 亟舒 亠 亳亰仗仂仍亰于舒 gSOAP importer.
- 21. IPC @Chip CGI The CGI ("Common Gateway Interface") API uses interrupt 0xAB with a service number in the high order byte of the AX register (AH). 損 CGI provides the possibility to install at the Web server own programmed CGI functions. These functions are bound with a fixed name and are executed by the Web server task, if a http request with such a fixed name comes in. This mechanism allows dynamic usage of the IPC@CHIP速 Web server. CLI commands webstat, cgistat. Functions 損 void huge my_cgi_func(rpCgiPtr CgiRequest) 損 int CGI_Install ( CGI_Entry far *cgiptr ); 損 CGI_Entry : Name of the page, URL; http method (Get, Head or Post), pointer to callback function for this page.
- 22. DS TINI Web server com.dalsemi.tininet.http 損 Class HTTPServer - This class implements an HTTP server. This class currently only supports the GET and POST methods. The serviceRequests method blocks on a ServerSocket accept call. A new thread is spawned to service each new connection. The method serviceRequest can be used to synchronize access, using the lock object, to a requested web page. This might be useful if the server dynamically updates a page. 損 Class HTTPWorker - This worker class is primarily used by HTTPServer to handle requests It handles parsing and URL encoding, decoding etc. 損 Class PostElement - This is a utility class for handling the Field and Value pairs from the POST Content. 損 Interface PostScript - This interface defines the required public methods for a HTTP POST handling script. Tynamo - http://tynamo.qindesign.com/