http2: auto reset stream on server eos

When a server signals EOS from its side and the curl upload is
unfinished and the server has not given a positive HTTP status response,
auto RST the stream to signal that the upload is incomplete and that the
whole transfer can be stopped.

Fixes the case where the server responds with 413 on an upload but does
not RST the stream from its side, as httpd and others do.

Reported-by: jkamp-aws on github
Fixes #15316
Closes #15325

tests/http/test_07_upload.py

@@ -589,6 +589,22 @@ class TestUpload:
             exp_code = 0  # we get a 500 from the server
         r.check_exit_code(exp_code)  # GOT_NOTHING
 
+    @pytest.mark.parametrize("proto", ['http/1.1', 'h2', 'h3'])
+    def test_07_43_upload_denied(self, env: Env, httpd, nghttpx, repeat, proto):
+        if proto == 'h3' and not env.have_h3():
+            pytest.skip("h3 not supported")
+        if proto == 'h3' and env.curl_uses_lib('msh3'):
+            pytest.skip("msh3 fails here")
+        fdata = os.path.join(env.gen_dir, 'data-10m')
+        count = 1
+        max_upload = 128 * 1024
+        curl = CurlClient(env=env)
+        url = f'https://{env.authority_for(env.domain1, proto)}/curltest/put?'\
+            f'id=[0-{count-1}]&max_upload={max_upload}'
+        r = curl.http_put(urls=[url], fdata=fdata, alpn_proto=proto,
+                             extra_args=['--trace-config', 'all'])
+        r.check_stats(count=count, http_status=413, exitcode=0)
+
     # speed limited on put handler
     @pytest.mark.parametrize("proto", ['http/1.1', 'h2', 'h3'])
     def test_07_50_put_speed_limit(self, env: Env, httpd, nghttpx, proto, repeat):