http: Implement trailing headers for chunked transfers

This adds the CURLOPT_TRAILERDATA and CURLOPT_TRAILERFUNCTION
options that allow a callback based approach to sending trailing headers
with chunked transfers.

The test server (sws) was updated to take into account the detection of the
end of transfer in the case of trailing headers presence.

Test 1591 checks that trailing headers can be sent using libcurl.

Closes #3350

1 files changed, 63 insertions, 0 deletions

diff --git a/tests/data/test1591 b/tests/data/test1591
new file mode 100644
index 000000000..e864fdbaa
--- /dev/null
+++ b/tests/data/test1591
@@ -0,0 +1,63 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+HTTP PUT
+CURLOPT_HTTPTRAILER_FUNCTION
+CURLOPT_HTTPTRAILER_DATA
+</keywords>
+</info>
+
+# Server-side
+<reply>
+<data nocheck="yes">
+HTTP/1.0 200 OK swsclose
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+</data>
+</reply>
+# Client-side
+<client>
+<features>
+HTTP
+</features>
+<server>
+http
+</server>
+<name>
+HTTP PUT with trailers at the end
+</name>
+<tool>
+lib1591
+</tool>
+<command>
+http://%HOSTIP:%HTTPPORT/bzz/1591
+</command>
+<stdin>
+more than one byte
+</stdin>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+<strip>
+^User-Agent:.*
+</strip>
+<protocol>
+PUT /bzz/1591 HTTP/1.1

+Host: %HOSTIP:%HTTPPORT

+Accept: */*

+Transfer-Encoding: chunked

+Trailer: my-super-awesome-trailer, my-other-awesome-trailer

+Expect: 100-continue

+

+e

+Hello Cloud!

+

+0

+my-super-awesome-trailer: trail1

+my-other-awesome-trailer: trail2

+

+</protocol>
+</verify>
+</testcase>