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author Dave Woodfall2021-04-16 12:33:06 +0200
committer Willy Sudiarto Raharjo2021-04-16 12:33:06 +0200
commit41b95cf8cbf87711e286acc3bfe0e39f5aad36e9 (patch)
treec150760edaa89ddf3fac35f041a77df745376df9 /network/nweb/README.client
parentce3630d8cd92f83f8a0c8e16f1b22281f6f65c3a (diff)
downloadslackbuilds-41b95cf8cbf87711e286acc3bfe0e39f5aad36e9.tar.gz
network/nweb: Added (tiny web server in C).
Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
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+ client.c
+
+This client.c program is designed to fake being a web browser. It sends the
+expected requests to the web server over a network socket connection and
+displays the results as text rather than graphically displaying the results. In
+the code you will have to change the two lines as below to match your web
+server or nweb server.
+
+/* YOU WILL HAVE TO CHANGE THESE TWO LINES TO MATCH YOUR CONFIG / #define PORT
+ * 8181 /
+Port number as an integer - web server default is 80 / #define IP_ADDRESS
+"192.168.0.8" / IP Address as a string */
+
+The default is to request the /index.html from the web server. If you want to
+request another file then change the GET line as below:
+
+char *command = "GET /index.html HTTP/1.0 \r\n\r\n" ;
+
+To, for example:
+
+char *command = "GET /nigel.jpg HTTP/1.0 \r\n\r\n" ;
+
+Then compile the program with: cc client.c -o client
+
+I save the output in to a file as putting a non-test file like .jpg to the
+terminal screen can cause chaos: client >output
+
+Then edit the output file: vi output
+
+In real life, the interaction of web browser and web server can be much more complex.
+
+ 1. The web browser can tell the web server about its name, version and capabilities.
+
+ 2. The web server can send complex file types line JavaScript or Java programs
+or other active components.
+
+ 3. They can maintain a longer connection over the socket for efficiency.
+
+ 4. Below is an example of my Firefox brower requesting an index.html file. I
+have added newline characters to make it readable - it is 1300 bytes long! I
+have no idea what most of it is about. You will have to read the The World Wide
+Web Consortium (W3C) at http://www.w3.org for all the details.
+
+GET /index.html HTTP/1.1Host: myserver.home.com:80User-Agent: Mozilla/5.0 (W indows;
+U; Windows NT 5.1; en-GB; rv:1.9.2.28) Gecko/20120306 Firefox/3.6.28 (.NET CLR
+3.5.30729)Ac cept: image/png,image/;q=0.8,/*;q=0.5Accept-Language:
+en-gb,en;q=0.5Accept-Encoding: gzip,defla teAccept-Charset: ISO-8859-1,utf-8;
+q=0.7,*;q=0.7Keep-Alive: 115Connection: keep-alive**Referer:
+http://myserver.uk.home.com:8181/index.html**Cookie:
+__utma=101107545.1790272076.1316019590.13289002 55.1328908680.164;
+__utmz=101107545.1328566199.157.46.utmcsr=t.co|utmccn=(referral)|utmcmd=referral| u
+tmcct=/iTJx4DO1; UnicaNIODID=ZBr8gm79vIG-XKeoGGb; W3SSO_ACCESS=abc.home.com;
+ISP=70fdfc95
+d93011d783e4de784ea97766-70fdfc95d93011d783e4de784ea97766-f67749a8b899e8ceed7e940b8c4bf189;
+Prof ile=2000121913394303111032836125|EN|866|866.BDF|en-GB;
+_unam=693fb60-1337f162b72-11770d11-5; WLS intra_USERID=nigel@hotmail.com;
+ipcInfo=cc%3Duk%3Blc%3Den%3Bac%3Dall; iwm1p=214617669; bprememberme=nigel@
+hotmail.com; EPSPROFILE=EE2355DFE16AE020BE6C62FCB6BF5602;
+DWPERM=Xa.2/Xb.Xzso3-U35t8RWKvqBreGaQMgsP_RG
+Fl1124oIt-L-OPJIdSautkBN0D4NUp9JLlpUqPqB6CWOo-pgrJwhxNvvSfPAajgetaA2MOYwHfQPXPTRG9zwOMMR57EHQtXhOy5Om
+yzanyZthvVClm6uxvbwh0isEQ2Mm_9g2l7NjcA3RJdjuLaB3qlljOmyVuhDjBkgdNEb3PgYcCpbiu1FUzXrhPalhgsbAj7NBkaY88
+Yyg/Xc./Xd./Xf./Xg.1696801
+
+I hope this has been instructive, thanks, Nigel Griffiths