77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
package steam
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import (
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"encoding/json"
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"fmt"
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"math/rand"
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"net/http"
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"sync"
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"time"
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"github.com/Philipp15b/go-steam/netutil"
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)
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// Load initial server list from Steam Directory Web API.
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// Call InitializeSteamDirectory() before Connect() to use
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// steam directory server list instead of static one.
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func InitializeSteamDirectory() error {
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return steamDirectoryCache.Initialize()
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}
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var steamDirectoryCache *steamDirectory = &steamDirectory{}
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type steamDirectory struct {
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sync.RWMutex
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servers []string
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isInitialized bool
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}
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// Get server list from steam directory and save it for later
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func (sd *steamDirectory) Initialize() error {
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sd.Lock()
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defer sd.Unlock()
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client := new(http.Client)
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resp, err := client.Get(fmt.Sprintf("https://api.steampowered.com/ISteamDirectory/GetCMList/v1/?cellId=0"))
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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r := struct {
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Response struct {
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ServerList []string
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Result uint32
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Message string
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}
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}{}
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if err = json.NewDecoder(resp.Body).Decode(&r); err != nil {
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return err
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}
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if r.Response.Result != 1 {
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return fmt.Errorf("Failed to get steam directory, result: %v, message: %v\n", r.Response.Result, r.Response.Message)
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}
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if len(r.Response.ServerList) == 0 {
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return fmt.Errorf("Steam returned zero servers for steam directory request\n")
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}
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sd.servers = r.Response.ServerList
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sd.isInitialized = true
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return nil
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}
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func (sd *steamDirectory) GetRandomCM() *netutil.PortAddr {
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sd.RLock()
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defer sd.RUnlock()
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if !sd.isInitialized {
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panic("steam directory is not initialized")
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}
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rng := rand.New(rand.NewSource(time.Now().UnixNano()))
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addr := netutil.ParsePortAddr(sd.servers[rng.Int31n(int32(len(sd.servers)))])
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return addr
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}
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func (sd *steamDirectory) IsInitialized() bool {
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sd.RLock()
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defer sd.RUnlock()
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isInitialized := sd.isInitialized
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return isInitialized
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}
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