[client] Add a lazy-connection override and device name reporting to the WASM client (#7276)

client/system/info_js.go

@@ -15,7 +15,7 @@ func UpdateStaticInfoAsync() {
 }
 
 // GetInfo retrieves system information for WASM environment
-func GetInfo(_ context.Context) *Info {
+func GetInfo(ctx context.Context) *Info {
 	info := &Info{
 		GoOS:           runtime.GOOS,
 		Kernel:         runtime.GOARCH,
@@ -30,6 +30,13 @@ func GetInfo(_ context.Context) *Info {
 	collectBrowserInfo(info)
 	collectLocationInfo(info)
 	collectSystemInfo(info)
+
+	// A caller-provided device name wins, as on the other platforms. A peer
+	// registered over an API keeps reporting the name it was registered with,
+	// so its meta does not change on the first sync.
+	if name := extractDeviceName(ctx, info.Hostname); name != "" {
+		info.Hostname = name
+	}
 	return info
 }
 

client/system/info_js_test.go

@@ -0,0 +1,27 @@
+//go:build js
+
+package system
+
+import (
+	"context"
+	"testing"
+)
+
+// TestGetInfoHonorsDeviceName covers a caller-provided device name reaching the
+// reported hostname, so a peer registered over an API keeps reporting the name
+// it was registered with instead of renaming itself on its first sync.
+func TestGetInfoHonorsDeviceName(t *testing.T) {
+	ctx := context.WithValue(context.Background(), DeviceNameCtxKey, "session-name")
+	if got := GetInfo(ctx).Hostname; got != "session-name" {
+		t.Errorf("hostname should carry the caller's device name, got %q", got)
+	}
+}
+
+// TestGetInfoWithoutDeviceNameKeepsFallback covers the embed layer's habit of
+// always setting the context value: an empty name must not blank the hostname.
+func TestGetInfoWithoutDeviceNameKeepsFallback(t *testing.T) {
+	ctx := context.WithValue(context.Background(), DeviceNameCtxKey, "")
+	if got := GetInfo(ctx).Hostname; got == "" {
+		t.Error("an empty device name must not blank the hostname")
+	}
+}

client/system/process_test.go

@@ -1,3 +1,5 @@
+//go:build windows || (linux && !android) || (darwin && !ios) || freebsd
+
 package system
 
 import (