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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2005-2009. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+
+%%%-------------------------------------------------------------------
+%%% Defines
+%%%-------------------------------------------------------------------
+
+-define(TFTP_DEFAULT_PORT, 69).% Default server port
+
+-define(TFTP_OPCODE_RRQ, 1). % Read request
+-define(TFTP_OPCODE_WRQ, 2). % Write request
+-define(TFTP_OPCODE_DATA, 3). % Data
+-define(TFTP_OPCODE_ACK, 4). % Acknowledgement
+-define(TFTP_OPCODE_ERROR, 5). % Error
+-define(TFTP_OPCODE_OACK, 6). % Option acknowledgment
+
+-define(TFTP_ERROR_UNDEF, 0). % Not defined, see error message (if any)
+-define(TFTP_ERROR_ENOENT, 1). % File not found.
+-define(TFTP_ERROR_EACCES, 2). % Access violation.
+-define(TFTP_ERROR_ENOSPC, 3). % Disk full or allocation exceeded.
+-define(TFTP_ERROR_BADOP, 4). % Illegal TFTP operation.
+-define(TFTP_ERROR_BADBLK, 5). % Unknown transfer ID.
+-define(TFTP_ERROR_EEXIST, 6). % File already exists.
+-define(TFTP_ERROR_BADUSER, 7). % No such user.
+-define(TFTP_ERROR_BADOPT, 8). % Unrequested or illegal option.
+
+-record(tftp_msg_req, {access, filename, mode, options, local_filename}).
+-record(tftp_msg_data, {block_no, data}).
+-record(tftp_msg_ack, {block_no}).
+-record(tftp_msg_error, {code, text, details}).
+-record(tftp_msg_oack, {options}).
+
+-record(config, {parent_pid = self(),
+ udp_socket,
+ udp_options = [binary, {reuseaddr, true}, {active, once}],
+ udp_host = "localhost",
+ udp_port = ?TFTP_DEFAULT_PORT,
+ port_policy = random,
+ use_tsize = false,
+ max_tsize = infinity, % Filesize
+ max_conn = infinity,
+ rejected = [],
+ polite_ack = false,
+ debug_level = none,
+ timeout,
+ user_options = [],
+ callbacks = [],
+ logger = tftp_logger,
+ max_retries = 5}).
+
+-record(callback, {regexp, internal, module, state, block_no, count}).