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Hello!

I've noticed, that aiohttp is simply concatenating server-response (or client-request) header like this, w/o any validation:

    line = status_line + '\r\n' + ''.join(
        [k + ': ' + v + '\r\n' for k, v in headers.items()])

Which may be not okay, if some of the header values were based on user input.

Consider this example:

import aiohttp.web
asyn

Stitching API

Opencv provide a Stitching module/API

Bascially, i would like to be able to rewrite stitching_detailed.cpp in javascript

This includes :

• Stitcher class
• Features extractors (already implemented in opencv4nodejs)
• Estimator

What should happen if deliver_cancel raises an exception? In the current implementation, the shielded cancel scope will prevent it from propagating until the process exits, which might take a while if the crash occurred before signaling the process in any way. Maybe on exception from a user-specified deliver_cancel we should call the default deliver_cancel to kill the process? Or just kill() since