bend/interceptor

An Http Server written in CPP

interceptor's Issues

Implement serving of big files in multiple buffers.

Big files should be read and sent in multiple chunks to avoid using to much RAM

• Problem: Production of buffer is faster then sending over network, this uses too much RAM.
  Use kind of producucer/consumer list with std::condition_variable and io_service::post

Add test for connectors

Tests should be added for the location component feature

Implement Cache-Control

Implement Cache-Control when serving files

Implement if-modified requests

Handling Requests with If-Modified-Since: or If-Unmodified-Since: Headers

To avoid sending resources that don't need to be sent, thus saving bandwidth, HTTP 1.1 defines the If-Modified-Since: and If-Unmodified-Since: request headers. The former says "only send the resource if it has changed since this date"; the latter says the opposite. Clients aren't required to use them, but HTTP 1.1 servers are required to honor requests that do use them.

Unfortunately, due to earlier HTTP versions, the date value may be in any of three possible formats:

If-Modified-Since: Fri, 31 Dec 1999 23:59:59 GMT
If-Modified-Since: Friday, 31-Dec-99 23:59:59 GMT
If-Modified-Since: Fri Dec 31 23:59:59 1999
Again, all time values in HTTP use Greenwich Mean Time (though try to be tolerant of non-GMT times). If a date with a two-digit year seems to be more than 50 years in the future, treat it as being in the past-- this helps with the millennium bug. In fact, do this with any date handling in HTTP 1.1.

Although servers must accept all three date formats, HTTP 1.1 clients and servers must only generate the first kind.

If the date in either of these headers is invalid, or is in the future, ignore the header.

If, without the header, the request would result in an unsuccessful (non-200-level) status code, ignore the header and send the non-200-level response. In other words, only apply these headers when you know the resource would otherwise be sent.

The If-Modified-Since: header is used with a GET request. If the requested resource has been modified since the given date, ignore the header and return the resource as you normally would. Otherwise, return a "304 Not Modified" response, including the Date: header and no message body, like

HTTP/1.1 304 Not Modified
Date: Fri, 31 Dec 1999 23:59:59 GMT
[blank line here]
The If-Unmodified-Since: header is similar, but can be used with any method. If the requested resource has not been modified since the given date, ignore the header and return the resource as you normally would. Otherwise, return a "412 Precondition Failed" response, like

HTTP/1.1 412 Precondition Failed
[blank line here]

Rework configuration class

Make it use an abstract class to read data so it can be easily replaced by another type of config later on

Add test for If-Modified-Since Header

Test should be added for If-Modified-Since Header

Implement POST Requests

Implement redirections

See
https://www.digitalocean.com/community/tutorials/how-to-create-temporary-and-permanent-redirects-with-nginx

Merge tests for backend and http server