diff --git a/vfile/vfff/http.c b/vfile/vfff/http.c
index 02c4f81..deac884 100644
--- a/vfile/vfff/http.c
+++ b/vfile/vfff/http.c
@@ -918,7 +918,7 @@ int vhttp_vcn_stat(struct vcn *cn, struct vfff_req *rreq)
 static
 int vhttp_vcn_retr(struct vcn *cn, struct vfff_req *rreq)
 {
-    int    close_cn = 0, rc = 1;
+    int    close_cn = 0, rc = 1, chunked = 0;
     long   from = 0, to = 0, total = 0, amount = 0;
     char   req_line[PATH_MAX];
     const  char *trenc;
@@ -970,15 +970,18 @@ int vhttp_vcn_retr(struct vcn *cn, struct vfff_req *rreq)
         goto l_err_end;
 
     if ((trenc = http_resp_get_hdr(resp, "transfer-encoding"))) {
-        if (*vfff_verbose > 1)
+        chunked = strcasecmp(trenc, "chunked") == 0;
+
+        if (*vfff_verbose > 1 && !chunked) {
             vfff_log("Trasfer-Encoding is an unimplemented tag, give up\n");
-        vfff_set_err(ENOENT, "%s: unimplemented HTTP "
+            vfff_set_err(ENOENT, "%s: unimplemented HTTP "
                       "transfer encoding", trenc);
-        close_cn = 1;
-        goto l_err_end;
+            close_cn = 1;
+            goto l_err_end;
+        }
     }
     
-    if ((amount = http_resp_get_content_length(resp)) < 0)
+    if ( !chunked && (amount = http_resp_get_content_length(resp)) < 0 )
         goto l_err_end;
 
     if ((trenc = http_resp_get_hdr(resp, "last-modified")) != NULL)
@@ -1023,12 +1026,15 @@ int vhttp_vcn_retr(struct vcn *cn, struct vfff_req *rreq)
     rreq->st_remote_size = total;
     
     
-    if (*vfff_verbose > 1) {
+    if (*vfff_verbose > 1 && !chunked) {
         long a = from ? total - from : total;
         vfff_log("Total file size %ld, %ld to download, mtime %s\n",
                  total, a, ctime(&rreq->st_remote_mtime));
     }
     
+    if (chunked)
+        total = -1;
+
     errno = 0;
     if (!vfff_transfer_file(rreq, cn->sockfd, total))
         goto l_err_end;
diff --git a/vfile/vfff/vfff.c b/vfile/vfff/vfff.c
index 455fafd..25d1102 100644
--- a/vfile/vfff/vfff.c
+++ b/vfile/vfff/vfff.c
@@ -346,12 +356,12 @@ int vcn_stat(struct vcn *cn, struct vfff_req *req)
 int vfff_transfer_file(struct vfff_req *vreq, int in_fd, long total_size)
 {
     struct  timeval tv;
-    int     rc, is_err = 0;
+    int     rc, is_err = 0, chunked = 0, last_chunk = 0;
     long    amount = 0;
     
-
+    if (chunked = total_size == -1) total_size = 0;
     amount = vreq->out_fdoff;
-    
+    vfff_log("amount, total = %ld, %ld\n", amount, total_size);
     if (vreq->progress_fn) {
         vreq->progress_fn(vreq->progress_fn_data, total_size, 0);
         if (amount) 
@@ -360,6 +370,7 @@ int vfff_transfer_file(struct vfff_req *vreq, int in_fd, long total_size)
 
     while (1) {
         fd_set fdset;
+        long size = -1;
 
         if (total_size > 0 && amount == total_size)
             break;
@@ -391,15 +402,48 @@ int vfff_transfer_file(struct vfff_req *vreq, int in_fd, long total_size)
             
         } else if (rc > 0) {
             char buf[8192];
-            int n;
+            char *chunkbeg = buf;
+            char *chunkend = buf;
+            int n,nw,m;
             
-            if ((n = read(in_fd, buf, sizeof(buf))) == 0) 
+            if ((m = n = read(in_fd, buf, sizeof(buf))) == 0) 
                 break;
-            
-            if (n > 0) {
-                int nw;
-                
-                if ((nw = write(vreq->out_fd, buf, n)) != n) {
+
+            if (chunked && n > 0) {
+                while (size != 0 && n != 0) {
+                    if ((size = strtol(chunkend, &chunkbeg,16)) == 0)
+                        goto transfer_end;
+
+                    total_size += size;
+                    chunkbeg += 2; // CR+LF
+                    n -= chunkbeg - chunkend;
+
+                    if (*vfff_verbose > 1)
+                        vfff_log("\nchunk size = %ld, number of bytes rcv= %d\n", size, n);
+
+                    if (n >= size) {
+                        if ((nw = write(vreq->out_fd, chunkbeg, size)) != size) {
+                            is_err = 1;
+                            break;
+                        }
+                    } else
+                    if (n < size) {
+                        if ((nw = write(vreq->out_fd, chunkbeg, n)) != n) {
+                            is_err = 1;
+                            break;
+                        }
+                        size -= n;
+                    }
+
+                    chunkend += size;
+                    amount += nw;
+
+                    if (vreq->progress_fn)
+                        vreq->progress_fn(vreq->progress_fn_data, total_size, amount);
+                }
+            } else
+            if (!chunked && n > 0) {
+                if ((nw = write(vreq->out_fd, chunkbeg, n)) != n) {
                     is_err = 1;
                     break;
                 }
@@ -413,7 +457,9 @@ int vfff_transfer_file(struct vfff_req *vreq, int in_fd, long total_size)
             } 
         }
     }
-    
+
+transfer_end:
+
     if (is_err) {
         vfff_errno = errno;
         if (vfff_errno == 0)