一种检测http响应结束的简单方法（原始套接字，java）？

Question

I want to retrieve the server's response as is, with all headers. The first thing that comes to mind is to use raw sockets. As I have learned from the search, there are 3 ways to indicate the end of response:

(1) closing the connection;
(2) examining Content-Length ;
(3) getting all chunks in the case of Transfer-Encoding: Chunked .
There is also
(4) the timeout method: assume that the timeout means end of data, but the latter is not really reliable.

I want a general-case solution and do not want to
add a Connection: close line to the request itself.

In addition, it is recommended to use an existing library rather than re-invent the wheel.

Question:

How do I use an existing package, preferably, something already present in Android, to detect the end of HTTP response while having access (without interference) to the raw data stream?

UPD: forgot to mention that the HTTP request is given to me as a sequence of bytes. Yes, it is for testing.

PS
relevant reading:
End of an HTTP Response
Detect the end of an HTTP Request in Java
Detect end of HTTP request body
How HTTP Server inform its clients that the response has ended
Proper handling of chuncked Http Response within Socket
Detect the end of a HTTP packet
Android socket & HTTP response headers
Java HTTP GET response waits until timeout

Answer 1

I suggest to use a the Apache HTTP client package ( http://hc.apache.org/httpclient-3.x/ ) so you don't need to implement all the finicky details of the HTTP protocol.

The Apache Http Client will give you access to the headers and their content, which may be enough for you.

If you really need access to the actual character sequence sent by the server (eg for debugging purposes), you could then intercept the communication by replacing the connection socket factory with your own to create "intercepting" sockets which store all data transferred in a buffer where your code can access it later on. See http://hc.apache.org/httpcomponents-client-4.3.x/tutorial/html/connmgmt.html#d5e418