1. For Dalhousie CS4173 By J. Blustein A Flowchart-ish View
Creative Commons Attribution-Share Alike License 2.0
Inside A WWW Server
A Flowchart-ish View

2. Inside the Server Process
For Dalhousie CS4173
By J. Blustein
Creative Commons Attribution-Share Alike License 2.0
Inside the Server Process
File Y
Response
Rules
Plain File?
Request
Webpage
Header + N
Request
Basic types are GET & POST
See env.cgi for information passed
Rules
Examples of rules:
which host (users.cs.dal.ca, etc.),
which language version,
mapping to correct filename
Okay?…
What if the file needs processing (execution)?

3. Inside the Server Process
For Dalhousie CS4173
By J. Blustein
Creative Commons Attribution-Share Alike License 2.0
Inside the Server Process
File Y
Response
Rules
Plain File?
Request
Webpage
Header +
SSI,
CGI,
etc. N
File
Now let's put the client in the picture…

4. Inside the Server Process
For Dalhousie CS4173
By J. Blustein
Creative Commons Attribution-Share Alike License 2.0
Inside the Server Process
File Y
Connection
with
Client
Rules
Plain?
Request
SSI, CGI, etc. N
File
Response
Webpage
Header +

5. Still Images Are Available At The Website
For Dalhousie CS4173
By J. Blustein
Creative Commons Attribution-Share Alike License 2.0
Still Images Are Available At The Website 1
InsideTheServerProcess/ 2b
InsideTheServerProcess/