HTTP keep-alive header support

[ronag]

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Keep-Alive

[ronag]

Not sure how useful this is in practice.

[delvedor]

Isn't this library already keeping sockets alive?

[ronag]

Yes, this header is fo providing hints

[ronag]

@szmarczak Any ideas of when this is useful? Or someone that might know?

The only case I can think of is #273

[ronag]

I guess the server could indicate max pipelining maybe?

[ronag]

I have no idea. I might be interested in implementing it for Node core.

From looking at nginx docs, it seems an header that is send from the server to the client.

From http://nginx.org/en/docs/http/ngx_http_core_module.html

The first parameter sets a timeout during which a keep-alive client connection will stay open on the server side. The zero value disables keep-alive client connections. The optional second parameter sets a value in the “Keep-Alive: timeout=time” response header field. Two parameters may differ.

The “Keep-Alive: timeout=time” header field is recognized by Mozilla and Konqueror. MSIE closes keep-alive connections by itself in about 60 seconds.

Originally posted by @mcollina in #273 (comment)

[szmarczak]

Not sure how useful this is in practice.

Me neither...

[ronag]

I think we fixed the relevant parts of this in #275

[BlueClouDragon]

how to set keep-alive connection in headers?