Re: Why curl does not send `Connection: Keep-Alive` in the header by default?

On 11/2/2019 12:18 AM, Peng Yu via curl-users wrote:
> Here is the netcat output of curl.
>
> ```
> $ nc -l -p 9000
> HEAD / HTTP/1.1
> Host: localhost:9000
> User-Agent: curl/7.66.0
> Accept: */*
>
> $ curl -ss -iLIhttp://localhost:9000
> ```
>
> Here is the netcat output of wget. Does anybody know why curl does not
> use the same request header as the wget? Is there an option to make
> curl behave the same as wget in this aspect? Thanks.
>
> ```
> $ nc -l -p 9000
> HEAD / HTTP/1.1
> User-Agent: Wget/1.20.3 (darwin18.6.0)
> Accept: */*
> Accept-Encoding: identity
> Host: localhost:9000
> Connection: Keep-Alive
>
> $ wget -q --spider -S -o-http://localhost:9000

HTTP 1.1 connections are considered persistent by default, the client
does not need to send keep-alive and if you enable verbose mode you'll
see curl keeps the connection open. However if for some reason you are
using HTTP 1.0 then you can use -H "Connection: Keep-Alive" to signal to
the server.

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Received on 2019-11-02