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use highest DNS-SRV entry for client connection

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genofire 2019-07-18 01:27:11 +02:00 committed by Mickaël Rémond
parent 323de704f6
commit fe6cea870d
1 changed files with 14 additions and 0 deletions
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14
client.go
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@ -99,6 +99,20 @@ func NewClient(config Config, r *Router) (c *Client, err error) {
// fallback to jid domain
if config.Address == "" {
config.Address = config.parsedJid.Domain
// fetch srv DNS-Entries
_, srvEntries, err := net.LookupSRV("xmpp-client", "tcp", config.parsedJid.Domain)
if err == nil && len(srvEntries) > 0 {
// if find some use the entry with heightest weight
bestSrv := srvEntries[0]
for _, srv := range srvEntries {
if srv.Priority <= bestSrv.Priority && srv.Weight >= bestSrv.Weight {
bestSrv = srv
config.Address = ensurePort(srv.Target, srv.Port)
}
}
}
}
config.Address = ensurePort(config.Address, 5222)