diff --git a/common/log/context_handler.go b/common/log/context_handler.go
index c1983b01a..8154feca8 100644
--- a/common/log/context_handler.go
+++ b/common/log/context_handler.go
@@ -2,7 +2,10 @@ package log
 
 import (
 	"context"
+	"fmt"
 	"log/slog"
+	"path/filepath"
+	"runtime"
 
 	"opencsg.com/csghub-server/common/utils/trace"
 )
@@ -20,5 +23,15 @@ func (h *ContextHandler) Handle(ctx context.Context, r slog.Record) error {
 	if sessionID := trace.GetSessionIDFromContext(ctx); sessionID != "" {
 		r.AddAttrs(slog.String("xnet_session_id", sessionID))
 	}
+
+	if r.Level == slog.LevelError || r.Level == slog.LevelDebug {
+		if r.PC != 0 {
+			fs := runtime.CallersFrames([]uintptr{r.PC})
+			f, _ := fs.Next()
+			shortFile := filepath.Base(f.File)
+			r.AddAttrs(slog.String("source", fmt.Sprintf("%s:%d", shortFile, f.Line)))
+		}
+	}
+
 	return h.Handler.Handle(ctx, r)
 }
diff --git a/common/log/context_handler_test.go b/common/log/context_handler_test.go
new file mode 100644
index 000000000..3763146e3
--- /dev/null
+++ b/common/log/context_handler_test.go
@@ -0,0 +1,81 @@
+package log
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"log/slog"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"go.opentelemetry.io/otel/trace"
+	csgtrace "opencsg.com/csghub-server/common/utils/trace"
+)
+
+func TestContextHandler_Handle(t *testing.T) {
+	// Setup buffer to capture logs
+	var buf bytes.Buffer
+	// Use JSONHandler to easily parse output
+	jsonHandler := slog.NewJSONHandler(&buf, &slog.HandlerOptions{
+		// Remove time to make testing easier or just ignore it in assertion
+		ReplaceAttr: func(groups []string, a slog.Attr) slog.Attr {
+			if a.Key == slog.TimeKey {
+				return slog.Attr{}
+			}
+			return a
+		},
+	})
+
+	h := &ContextHandler{Handler: jsonHandler}
+	logger := slog.New(h)
+
+	// Case 1: Context with TraceID (via OTEL) and SessionID
+	ctx := context.Background()
+
+	// Generate a valid TraceID and SpanID for OTEL
+	traceIDStr := "4bf92f3577b34da6a3ce929d0e0e4736"
+	traceID, err := trace.TraceIDFromHex(traceIDStr)
+	require.NoError(t, err)
+
+	spanIDStr := "00f067aa0ba902b7"
+	spanID, err := trace.SpanIDFromHex(spanIDStr)
+	require.NoError(t, err)
+
+	spanCtx := trace.NewSpanContext(trace.SpanContextConfig{
+		TraceID:    traceID,
+		SpanID:     spanID,
+		TraceFlags: trace.FlagsSampled,
+	})
+	// Inject SpanContext into context
+	ctx = trace.ContextWithSpanContext(ctx, spanCtx)
+
+	// Inject SessionID
+	sessionID := "sess-12345"
+	ctx = csgtrace.SetSessionIDInContext(ctx, sessionID)
+
+	// Log something
+	logger.ErrorContext(ctx, "test message")
+
+	// Parse result
+	var result map[string]interface{}
+	err = json.Unmarshal(buf.Bytes(), &result)
+	require.NoError(t, err)
+
+	// Verify fields
+	require.Equal(t, "test message", result["msg"])
+	require.Equal(t, traceIDStr, result["trace_id"])
+	require.Equal(t, sessionID, result["xnet_session_id"])
+
+	// Verify source
+	source, ok := result["source"].(string)
+	require.True(t, ok, "source field should be present and string")
+
+	// Check that source contains the filename
+	// Since we are running the test, the source file should be this file.
+	require.Contains(t, source, "context_handler_test.go")
+
+	wd, _ := os.Getwd()
+	t.Logf("Working Dir: %s", wd)
+	t.Logf("Source Logged: %s", source)
+}
diff --git a/component/git_http.go b/component/git_http.go
index fbbcfd41b..100a0916d 100644
--- a/component/git_http.go
+++ b/component/git_http.go
@@ -219,12 +219,23 @@ func (c *gitHTTPComponentImpl) lfsBatchDownloadInfo(ctx context.Context, req typ
 			Pointer: obj,
 		}
 		reqParams := make(url.Values)
-		url, err := c.s3Client.PresignedGetObject(ctx, c.config.S3.Bucket, objectKey, types.OssFileExpire, reqParams)
-		if err != nil {
-			objs = append(objs, &types.ObjectResponse{
-				Error: &types.ObjectError{},
-			})
-			continue
+		var url *url.URL
+		if repo.XnetEnabled {
+			url, err = c.xnetClient.PresignedGetObject(ctx, objectKey, types.OssFileExpire, reqParams)
+			if err != nil {
+				objs = append(objs, &types.ObjectResponse{
+					Error: &types.ObjectError{},
+				})
+				continue
+			}
+		} else {
+			url, err = c.s3Client.PresignedGetObject(ctx, c.config.S3.Bucket, objectKey, types.OssFileExpire, reqParams)
+			if err != nil {
+				objs = append(objs, &types.ObjectResponse{
+					Error: &types.ObjectError{},
+				})
+				continue
+			}
 		}
 		resp.Actions["download"] = &types.Link{Href: url.String(), Header: map[string]any{}}
 		objs = append(objs, resp)
@@ -250,11 +261,22 @@ func (c *gitHTTPComponentImpl) lfsBatchUploadInfo(ctx context.Context, req types
 	}
 
 	useMultipart := slices.Contains(req.Transfers, "multipart")
-
-	if useMultipart {
+	useXnet := false
+	transfer = "basic"
+	if repo.XnetEnabled && slices.Contains(req.Transfers, "xet") {
+		transfer = "xet"
+		useXnet = true
+	} else if useMultipart {
 		transfer = "multipart"
 	}
 
+	if useXnet {
+		header["X-Xet-Cas-Url"] = c.config.Xnet.Endpoint
+		header["X-Xet-Access-Token"] = "nosniff"
+		header["X-Xet-Token-Expiration"] = ""
+		header["X-Xet-Session-Id"] = "1"
+	}
+
 	for _, obj := range req.Objects {
 		// for existing lfs files, return pointer only and no action,
 		// this is the expeted format when file exists and doesn't
diff --git a/component/git_http_test.go b/component/git_http_test.go
index 625623c73..e9b616d47 100644
--- a/component/git_http_test.go
+++ b/component/git_http_test.go
@@ -213,6 +213,7 @@ func TestGitHTTPComponent_Batch(t *testing.T) {
 			operation:      types.LFSBatchUpload,
 			hasWriteAccess: true,
 			resp: &types.BatchResponse{
+				Transfer: "basic",
 				Objects: []*types.ObjectResponse{
 					{
 						Pointer: types.Pointer{Oid: notExistOID, Size: 100},