1 #ifndef HFIELD_H

     2 #define HFIELD_H

     3 

     4 extern unsigned int hfield_skipname();

     5 extern int hfield_known();

     6 extern int hfield_valid();

     7 

     8 #define H_SENDER 1

     9 #define H_FROM 2

    10 #define H_REPLYTO 3

    11 #define H_TO 4

    12 #define H_CC 5

    13 #define H_BCC 6

    14 #define H_DATE 7

    15 #define H_MESSAGEID 8

    16 #define H_SUBJECT 9

    17 #define H_R_SENDER 10

    18 #define H_R_FROM 11

    19 #define H_R_REPLYTO 12

    20 #define H_R_TO 13

    21 #define H_R_CC 14

    22 #define H_R_BCC 15

    23 #define H_R_DATE 16

    24 #define H_R_MESSAGEID 17

    25 #define H_RETURNRECEIPTTO 18

    26 #define H_ERRORSTO 19

    27 #define H_APPARENTLYTO 20

    28 #define H_RECEIVED 21

    29 #define H_RETURNPATH 22

    30 #define H_DELIVEREDTO 23

    31 #define H_CONTENTLENGTH 24

    32 #define H_CONTENTTYPE 25

    33 #define H_CONTENTTRANSFERENCODING 26

    34 #define H_NOTICEREQUESTEDUPONDELIVERYTO 27

    35 #define H_MAILFOLLOWUPTO 28

    36 #define H_NUM 29

    37 

    38 #endif