Merge pull request #181 from jvelilla/ewf_http_client

Update HTTP Client cURL implementation:

library/network/http_client/src/http_client_session.e

@@ -272,6 +272,15 @@ feature -- Authentication
 			-- Associated optional credentials value.
 			-- Computed as `username':`password'.
 
+	ciphers_settings: detachable READABLE_STRING_8
+			-- SSL cipher preference lists
+			-- examples: DEFAULT, ALL, TLSv1
+			-- check https://www.openssl.org/docs/man1.1.0/apps/ciphers.html
+			--Warning At the moment only used for LIB_CURL_HTTP_CLIENT
+			--Warning Net implementation set all the ciphers using the OpenSSL at
+			--Warning initialization time.
+
+
 feature -- Status setting
 
 	set_is_debug (b: BOOLEAN)
@@ -401,6 +410,14 @@ feature -- Element change
 			chunk_size := a_size
 		end
 
+	set_ciphers_settings (a_ciphers_settings: READABLE_STRING_8)
+			-- Set 'ciphers_settings' with 'a_ciphers_settings'.
+		do
+			create {STRING_8} ciphers_settings.make_from_string (a_ciphers_settings)
+		ensure
+			cipher_settings_set: attached ciphers_settings as c_settings and then c_settings.same_string (a_ciphers_settings)
+		end
+
 note
 	copyright: "2011-2017, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"

library/network/http_client/src/spec/libcurl/libcurl_http_client_request.e

@@ -372,6 +372,11 @@ feature -- Execution
 				curl_easy.setopt_integer (curl_handle, {CURL_OPT_CONSTANTS}.curlopt_ssl_verifypeer, 0)
 			end
 
+			--| Cipher List
+			if attached session.ciphers_settings as c_list then
+				curl_easy.setopt_string (curl_handle, {CURL_OPT_CONSTANTS}.curlopt_ssl_cipher_list, c_list )
+			end
+
 			--| Request method
 			if request_method.is_case_insensitive_equal ("GET") then
 				curl_easy.setopt_integer (curl_handle, {CURL_OPT_CONSTANTS}.curlopt_httpget, 1)