headers of Qremote functions for connection establishing
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#include <qdns.h>
#include <netinet/in.h>
Go to the source code of this file.
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| int | tryconn (struct ips *mx, const struct in6_addr *outip4, const struct in6_addr *outip6) |
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| int | connect_mx (struct ips *mx, const struct in6_addr *outip4, const struct in6_addr *outip6) |
| | establish a connection to a MX More...
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| void | getmxlist (char *, struct ips **) |
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headers of Qremote functions for connection establishing
| int connect_mx |
( |
struct ips * |
mx, |
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const struct in6_addr * |
outip4, |
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const struct in6_addr * |
outip6 |
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) |
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establish a connection to a MX
- Parameters
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| mx | list of MX ips |
| outip4 | address to use when making outgoing IPv4 connections |
| outip6 | address to use when making outgoing IPv6 connections |
- Returns
- if the connection was established
- Return values
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| 0 | a connection has been set up |
| -ENOENT | no IPs were left to try |
This will return once a connection to a remote host has been successfully established and the greeting of the remote server has been parsed. If no connection can be made this function return -ENOENT.
| void getmxlist |
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char * |
remhost, |
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struct ips ** |
mx |
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) |
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get all IPs for the MX entries of target address
- Parameters
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| remhost | target address |
| mx | list of MX entries will be stored here, memory will be malloced |
| int tryconn |
( |
struct ips * |
mx, |
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const struct in6_addr * |
outip4, |
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const struct in6_addr * |
outip6 |
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) |
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try to estabish an SMTP connection to one of the hosts in the ip list
- Parameters
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| mx | list of IP adresses to try |
| outip4 | local IPv4 to bind |
| outip6 | local IPv6 to bind |
- Returns
- the socket descriptor of the open connection
- Return values
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| -ENOENT | no IP address left to connect to |
Every entry where a connection attempt was made is marked with a priority of MX_PRIORITY_USED, the last one tried with MX_PRIORITY_CURRENT.
the port on the destination host to connect to
