Use frontend timeout

Addresses https://github.com/louislam/uptime-kuma/pull/4717#discussion_r1585616669

server/monitor-types/snmp.js

@@ -13,7 +13,7 @@ class SNMPMonitorType extends MonitorType {
         const options = {
             port: monitor.port || "161",
             retries: monitor.maxretries,
-            timeout: 1000,
+            timeout: monitor.timeout * 1000,
             version: getKey(snmp.Version, monitor.snmpVersion) || snmp.Version2c,
         };
 
@@ -91,8 +91,13 @@ class SNMPMonitorType extends MonitorType {
             session.close();
 
         } catch (err) {
-            heartbeat.status = DOWN;
-            heartbeat.msg = `SNMP Error: ${err.message}`;
+            if (err instanceof snmp.RequestTimedOutError) {
+                heartbeat.status = DOWN;
+                heartbeat.msg = `SNMP Error: Timed out after ${monitor.timeout} seconds`;
+            } else {
+                heartbeat.status = DOWN;
+                heartbeat.msg = `SNMP Error: ${err.message}`;
+            }
         }
     }
 

server/server.js

@@ -835,6 +835,7 @@ let needSetup = false;
                 bean.snmpOid = monitor.snmpOid;
                 bean.snmpCondition = monitor.snmpCondition;
                 bean.snmpControlValue = monitor.snmpControlValue;
+                bean.timeout = monitor.timeout;
 
                 bean.validate();
 

src/pages/EditMonitor.vue

@@ -506,8 +506,8 @@
                                 <input id="retry-interval" v-model="monitor.retryInterval" type="number" class="form-control" required :min="minInterval" step="1">
                             </div>
 
-                            <!-- Timeout: HTTP / Keyword only -->
-                            <div v-if="monitor.type === 'http' || monitor.type === 'keyword' || monitor.type === 'json-query'" class="my-3">
+                            <!-- Timeout: HTTP / Keyword / SNMP only -->
+                            <div v-if="monitor.type === 'http' || monitor.type === 'keyword' || monitor.type === 'json-query' || monitor.type === 'snmp'" class="my-3">
                                 <label for="timeout" class="form-label">{{ $t("Request Timeout") }} ({{ $t("timeoutAfter", [ monitor.timeout || clampTimeout(monitor.interval) ]) }})</label>
                                 <input id="timeout" v-model="monitor.timeout" type="number" class="form-control" required min="0" step="0.1">
                             </div>
@@ -969,7 +969,6 @@ const monitorDefaults = {
     retryInterval: 60,
     resendInterval: 0,
     maxretries: 0,
-    timeout: 48,
     notificationIDList: {},
     ignoreTls: false,
     upsideDown: false,
@@ -1321,6 +1320,13 @@ message HealthCheckResponse {
                 }
             }
 
+            // Set default timeout
+            if (this.monitor.type === "snmp") {
+                this.monitor.timeout = 1;
+            } else {
+                this.monitor.timeout = 48;
+            }
+
             // Set default SNMP version
             if (!this.monitor.snmpVersion) {
                 this.monitor.snmpVersion = "2c";