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diff --git a/src/core/httpcli/parser.h b/src/core/httpcli/parser.h
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+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __GRPC_INTERNAL_HTTPCLI_PARSER_H__
+#define __GRPC_INTERNAL_HTTPCLI_PARSER_H__
+
+#include "src/core/httpcli/httpcli.h"
+#include <grpc/support/port_platform.h>
+#include <grpc/support/slice.h>
+
+typedef enum {
+  GRPC_HTTPCLI_INITIAL_RESPONSE,
+  GRPC_HTTPCLI_HEADERS,
+  GRPC_HTTPCLI_BODY
+} grpc_httpcli_parser_state;
+
+typedef struct {
+  grpc_httpcli_parser_state state;
+
+  grpc_httpcli_response r;
+  size_t body_capacity;
+  size_t hdr_capacity;
+
+  gpr_uint8 cur_line[GRPC_HTTPCLI_MAX_HEADER_LENGTH];
+  size_t cur_line_length;
+} grpc_httpcli_parser;
+
+void grpc_httpcli_parser_init(grpc_httpcli_parser *parser);
+void grpc_httpcli_parser_destroy(grpc_httpcli_parser *parser);
+
+int grpc_httpcli_parser_parse(grpc_httpcli_parser *parser, gpr_slice slice);
+int grpc_httpcli_parser_eof(grpc_httpcli_parser *parser);
+
+#endif  /* __GRPC_INTERNAL_HTTPCLI_PARSER_H__ */