lib/connections, lib/config: Bandwidth throttling per remote device (fixes #4516) (#4603)

lib/config/config.go

@@ -797,3 +797,12 @@ func filterURLSchemePrefix(addrs []string, prefix string) []string {
 	}
 	return addrs
 }
+
+// mapDeviceConfigs returns a map of device ID to device configuration for the given configuration.
+func (cfg *Configuration) DeviceMap() map[protocol.DeviceID]DeviceConfiguration {
+	m := make(map[protocol.DeviceID]DeviceConfiguration, len(cfg.Devices))
+	for _, dev := range cfg.Devices {
+		m[dev.DeviceID] = dev
+	}
+	return m
+}

lib/config/deviceconfiguration.go

@@ -20,6 +20,8 @@ type DeviceConfiguration struct {
 	Paused                   bool                 `xml:"paused" json:"paused"`
 	AllowedNetworks          []string             `xml:"allowedNetwork,omitempty" json:"allowedNetworks"`
 	AutoAcceptFolders        bool                 `xml:"autoAcceptFolders" json:"autoAcceptFolders"`
+	MaxSendKbps              int                  `xml:"maxSendKbps" json:"maxSendKbps"`
+	MaxRecvKbps              int                  `xml:"maxRecvKbps" json:"maxRecvKbps"`
 }
 
 func NewDeviceConfiguration(id protocol.DeviceID, name string) DeviceConfiguration {