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Diffstat (limited to 'README.SrvRecords')
| -rw-r--r-- | README.SrvRecords | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/README.SrvRecords b/README.SrvRecords new file mode 100644 index 000000000..a3da64519 --- /dev/null +++ b/README.SrvRecords @@ -0,0 +1,22 @@ +DNS SRV record support in apt +============================= + +Apt supports a subset of the DNS SRV server records protocol as +described in RFC 2782 for service discovery. + +Before connecting to the requested server APT will send a SRV +record request of the form "_$protocol._tcp._$host", e.g. +"_http._tcp.ftp.debian.org" or "_http._tcp.security.debian.org". + +If the server sends SRV records +as a reply APT will use those to connect to the server(s) in +this reply. It will honor the "priority" field in the reply. + +However it does not implement the "weight" algorithm as described +in RFC 2782. It will use an equal weight for each server of the +same priority. + +If connecting to a server fails APT will retry with the next one +and remove the server from the list of valid servers for this +session. + |