/* Example of how to define an environment for given trace file Trace file: smtp_client Values of previously defined variables (created in file smtp_client_defines) will be inserted in packets. */// modification of packet with MAIL FROM commandGETPAC8PARAMETERS: <number of packet>Copies the specified packet from trace file to the buffer of current packet.// loads packet from fileCLEARHISTORYPARAMETERS: no parametersClears info about the maximum size of previous packets. New packet may be smaller than previous ones. This command also makes all auto-calculated values inactive.// if not use this command new packet cannot become smaller than originalPOS= tcp.dataPARAMETERS: <new position> | <field's name>Sets the <new position> of byte pointer. In the case of <field's name> new position will be equal to field's position.// the packet contains TCP optionsPASS12PARAMETERS: <number of bytes>Increases the byte pointer for the given <number of bytes>.// so don't use standart.td_command_name"tcp.data"field but make this OFFSETPARAMETERS: <number of bites>The position of the next defined field will be shifted to the left for the given <number of bits> which must be from 1 to 7. So every written value will be shifter to the left before writing. Nevertheless, after the writing the left bits will be also changed and set to 0. To avoid this use command MASK. See "headers/tcp_header.fws"PARAMETERS: <field's mask>Defines the mask for the next defined field. Mask is hexadecimal number. Value for field will be written only in bits corresponding not null bits of mask. See "headers/tcp_header.fws"."MAIL From: ".td_email mail_from// defined in smtp_client_defines.td_rest" SIZE=834\r\n"// writes new data to packet, the size of packet will be set after the written valueip.len = IPlen// IP length has changed, mark it to be recalculatedtcp.crc = TCPcrc// TCP checksum has changed, mark it to be recalculatedSETPAC8PARAMETERS: <number of packet>Replaces the specified packet in trace file by the current packet.// writes modified packet to file// modification of packet with RCPT TO commandGETPAC10PARAMETERS: <number of packet>Copies the specified packet from trace file to the buffer of current packet.// loads packet from fileCLEARHISTORYPARAMETERS: no parametersClears info about the maximum size of previous packets. New packet may be smaller than previous ones. This command also makes all auto-calculated values inactive.// if not use this command new packet cannot become smaller than originalPOS= tcp.dataPARAMETERS: <new position> | <field's name>Sets the <new position> of byte pointer. In the case of <field's name> new position will be equal to field's position.// the packet contains TCP optionsPASS12PARAMETERS: <number of bytes>Increases the byte pointer for the given <number of bytes>.// so don't use standart.td_command_name"tcp.data"field but make this OFFSETPARAMETERS: <number of bites>The position of the next defined field will be shifted to the left for the given <number of bits> which must be from 1 to 7. So every written value will be shifter to the left before writing. Nevertheless, after the writing the left bits will be also changed and set to 0. To avoid this use command MASK. See "headers/tcp_header.fws"PARAMETERS: <field's mask>Defines the mask for the next defined field. Mask is hexadecimal number. Value for field will be written only in bits corresponding not null bits of mask. See "headers/tcp_header.fws"."Rcpt To: ".td_email mail_to// defined in smtp_client_defines.td_newl_ine"\r\n"// writes new data to packet, the size of packet will be set after the written valueip.len = IPlen// IP length has changed, mark it to be recalculatedtcp.crc = TCPcrc// TCP checksum has changed, mark it to be recalculatedSETPAC10PARAMETERS: <number of packet>Replaces the specified packet in trace file by the current packet.// writes modified packet to file