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diff --git a/Utilities/cmnghttp2/lib/nghttp2_http.h b/Utilities/cmnghttp2/lib/nghttp2_http.h
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+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2015 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_HTTP_H
+#define NGHTTP2_HTTP_H
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+#include "nghttp2_session.h"
+#include "nghttp2_stream.h"
+
+/*
+ * This function is called when HTTP header field |nv| in |frame| is
+ * received for |stream|.  This function will validate |nv| against
+ * the current state of stream.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_HTTP_HEADER
+ *     Invalid HTTP header field was received.
+ * NGHTTP2_ERR_IGN_HTTP_HEADER
+ *     Invalid HTTP header field was received but it can be treated as
+ *     if it was not received because of compatibility reasons.
+ */
+int nghttp2_http_on_header(nghttp2_session *session, nghttp2_stream *stream,
+                           nghttp2_frame *frame, nghttp2_hd_nv *nv,
+                           int trailer);
+
+/*
+ * This function is called when request header is received.  This
+ * function performs validation and returns 0 if it succeeds, or -1.
+ */
+int nghttp2_http_on_request_headers(nghttp2_stream *stream,
+                                    nghttp2_frame *frame);
+
+/*
+ * This function is called when response header is received.  This
+ * function performs validation and returns 0 if it succeeds, or -1.
+ */
+int nghttp2_http_on_response_headers(nghttp2_stream *stream);
+
+/*
+ * This function is called trailer header (for both request and
+ * response) is received.  This function performs validation and
+ * returns 0 if it succeeds, or -1.
+ */
+int nghttp2_http_on_trailer_headers(nghttp2_stream *stream,
+                                    nghttp2_frame *frame);
+
+/*
+ * This function is called when END_STREAM flag is seen in incoming
+ * frame.  This function performs validation and returns 0 if it
+ * succeeds, or -1.
+ */
+int nghttp2_http_on_remote_end_stream(nghttp2_stream *stream);
+
+/*
+ * This function is called when chunk of data is received.  This
+ * function performs validation and returns 0 if it succeeds, or -1.
+ */
+int nghttp2_http_on_data_chunk(nghttp2_stream *stream, size_t n);
+
+/*
+ * This function inspects header field in |frame| and records its
+ * method in stream->http_flags.  If frame->hd.type is neither
+ * NGHTTP2_HEADERS nor NGHTTP2_PUSH_PROMISE, this function does
+ * nothing.
+ */
+void nghttp2_http_record_request_method(nghttp2_stream *stream,
+                                        nghttp2_frame *frame);
+
+#endif /* NGHTTP2_HTTP_H */