how to reuse httpclient connection to get multiple small files
I'm using httpclient to download multiple small files from server continuously. So I want to reuse the httpclient connection to avoid costing a lot of time to allocate new connection.
And I already have some client code to try to reuse the connection, and set the idle timeout of existing connection to 3 minutes.
However the resp开发者_开发百科onse from server always contains "Connection: close[\r][\n]", httpclient library releases the connection immediately after it meets such header.
How do I do to let httpclient to ignore the response from server, or which header I post could let server no longer return such closing header?
Even if you manage to ignore the Connection: close
header, I don't think it would be a good idea "violate" the directive.
The RFC says the following
HTTP/1.1 defines the "close" connection option for the sender to signal that the connection will be closed after completion of the response. For example,
Connection: close
in either the request or the response header fields indicates that the connection SHOULD NOT be considered `persistent' (section 8.1) after the current request/response is complete.
You need to add a keep-alive header to your HTTP requests.
http://download.oracle.com/javase/1.5.0/docs/guide/net/http-keepalive.html
https://www.rfc-editor.org/rfc/rfc1122#page-101
http://httpd.apache.org/docs/1.3/keepalive.html
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