Break out balsa and epoll_server from net/tools/flip_server.

net/tools/flip_server/balsa_enums.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef NET_TOOLS_FLIP_SERVER_BALSA_ENUMS_H_
-#define NET_TOOLS_FLIP_SERVER_BALSA_ENUMS_H_
-
-namespace net {
-
-struct BalsaFrameEnums {
-  enum ParseState {
-    PARSE_ERROR,
-    READING_HEADER_AND_FIRSTLINE,
-    READING_CHUNK_LENGTH,
-    READING_CHUNK_EXTENSION,
-    READING_CHUNK_DATA,
-    READING_CHUNK_TERM,
-    READING_LAST_CHUNK_TERM,
-    READING_TRAILER,
-    READING_UNTIL_CLOSE,
-    READING_CONTENT,
-    MESSAGE_FULLY_READ,
-    NUM_STATES,
-  };
-
-  enum ErrorCode {
-    NO_ERROR = 0,  // A sentinel value for convenience, none of the callbacks
-    //                should ever see this error code.
-    // Header parsing errors
-    // Note that adding one to many of the REQUEST errors yields the
-    // appropriate RESPONSE error.
-    // Particularly, when parsing the first line of a request or response,
-    // there are three sequences of non-whitespace regardless of whether or
-    // not it is a request or response. These are listed below, in order.
-    //
-    //        firstline_a     firstline_b    firstline_c
-    //    REQ: method         request_uri    version
-    //   RESP: version        statuscode     reason
-    //
-    // As you can see, the first token is the 'method' field for a request,
-    // and 'version' field for a response. We call the first non whitespace
-    // token firstline_a, the second firstline_b, and the third token
-    // followed by [^\r\n]*) firstline_c.
-    //
-    // This organization is important, as it lets us determine the error code
-    // to use without a branch based on is_response. Instead, we simply add
-    // is_response to the response error code-- If is_response is true, then
-    // we'll get the response error code, thanks to the fact that the error
-    // code numbers are organized to ensure that response error codes always
-    // precede request error codes.
-    //                                                  | Triggered
-    //                                                  | while processing
-    //                                                  | this NONWS
-    //                                                  | sequence...
-    NO_STATUS_LINE_IN_RESPONSE,                      // |
-    NO_REQUEST_LINE_IN_REQUEST,                      // |
-    FAILED_TO_FIND_WS_AFTER_RESPONSE_VERSION,        // |  firstline_a
-    FAILED_TO_FIND_WS_AFTER_REQUEST_METHOD,          // |  firstline_a
-    FAILED_TO_FIND_WS_AFTER_RESPONSE_STATUSCODE,     // |  firstline_b
-    FAILED_TO_FIND_WS_AFTER_REQUEST_REQUEST_URI,     // |  firstline_b
-    FAILED_TO_FIND_NL_AFTER_RESPONSE_REASON_PHRASE,  // |  firstline_c
-    FAILED_TO_FIND_NL_AFTER_REQUEST_HTTP_VERSION,    // |  firstline_c
-
-    FAILED_CONVERTING_STATUS_CODE_TO_INT,
-    REQUEST_URI_TOO_LONG,  // Request URI greater than kMaxUrlLen.
-
-    HEADERS_TOO_LONG,
-    UNPARSABLE_CONTENT_LENGTH,
-    // Warning: there may be a body but there was no content-length/chunked
-    // encoding
-    MAYBE_BODY_BUT_NO_CONTENT_LENGTH,
-
-    // This is used if a body is required for a request.
-    REQUIRED_BODY_BUT_NO_CONTENT_LENGTH,
-
-    HEADER_MISSING_COLON,
-
-    // Chunking errors
-    INVALID_CHUNK_LENGTH,
-    CHUNK_LENGTH_OVERFLOW,
-
-    // Other errors.
-    CALLED_BYTES_SPLICED_WHEN_UNSAFE_TO_DO_SO,
-    CALLED_BYTES_SPLICED_AND_EXCEEDED_SAFE_SPLICE_AMOUNT,
-    MULTIPLE_CONTENT_LENGTH_KEYS,
-    MULTIPLE_TRANSFER_ENCODING_KEYS,
-    UNKNOWN_TRANSFER_ENCODING,
-    INVALID_HEADER_FORMAT,
-
-    // A detected internal inconsistency was found.
-    INTERNAL_LOGIC_ERROR,
-
-    NUM_ERROR_CODES
-  };
-  static const char* ParseStateToString(ParseState error_code);
-  static const char* ErrorCodeToString(ErrorCode error_code);
-};
-
-struct BalsaHeadersEnums {
-  enum ContentLengthStatus {
-    INVALID_CONTENT_LENGTH,
-    CONTENT_LENGTH_OVERFLOW,
-    NO_CONTENT_LENGTH,
-    VALID_CONTENT_LENGTH,
-  };
-};
-
-}  // namespace net
-
-#endif  // NET_TOOLS_FLIP_SERVER_BALSA_ENUMS_H_
-