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servers.go
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/
servers.go
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package updater
import (
"context"
"fmt"
"sort"
"strings"
"github.com/qdm12/gluetun/internal/models"
"github.com/qdm12/gluetun/internal/provider/common"
"github.com/qdm12/gluetun/internal/updater/openvpn"
)
func (u *Updater) FetchServers(ctx context.Context, minServers int) (
servers []models.Server, err error) {
const url = "https://support.fastestvpn.com/download/fastestvpn_ovpn"
contents, err := u.unzipper.FetchAndExtract(ctx, url)
if err != nil {
return nil, err
} else if len(contents) < minServers {
return nil, fmt.Errorf("%w: %d and expected at least %d",
common.ErrNotEnoughServers, len(contents), minServers)
}
hts := make(hostToServer)
for fileName, content := range contents {
if !strings.HasSuffix(fileName, ".ovpn") {
continue // not an OpenVPN file
}
country, tcp, udp, err := parseFilename(fileName)
if err != nil {
u.warner.Warn(err.Error())
continue
}
host, warning, err := openvpn.ExtractHost(content)
if warning != "" {
u.warner.Warn(warning)
}
if err != nil {
// treat error as warning and go to next file
u.warner.Warn(err.Error() + " in " + fileName)
continue
}
hts.add(host, country, tcp, udp)
}
if len(hts) < minServers {
return nil, fmt.Errorf("%w: %d and expected at least %d",
common.ErrNotEnoughServers, len(hts), minServers)
}
hosts := hts.toHostsSlice()
resolveSettings := parallelResolverSettings(hosts)
hostToIPs, warnings, err := u.parallelResolver.Resolve(ctx, resolveSettings)
for _, warning := range warnings {
u.warner.Warn(warning)
}
if err != nil {
return nil, err
}
if len(hostToIPs) < minServers {
return nil, fmt.Errorf("%w: %d and expected at least %d",
common.ErrNotEnoughServers, len(servers), minServers)
}
hts.adaptWithIPs(hostToIPs)
servers = hts.toServersSlice()
sort.Sort(models.SortableServers(servers))
return servers, nil
}