diff --git a/sw/ground_segment/cockpit/Makefile b/sw/ground_segment/cockpit/Makefile
index 23e70557a08..d227ebaf5d1 100644
--- a/sw/ground_segment/cockpit/Makefile
+++ b/sw/ground_segment/cockpit/Makefile
@@ -36,9 +36,9 @@ FPIC=-fPIC
 OCAMLC=ocamlc
 OCAMLOPT=ocamlopt
 OCAMLOPTFLAGS=-thread
-OCAMLNETINCLUDES=$(shell ocamlfind query -r -i-format netstring)
-OCAMLNETCMA=$(shell ocamlfind query -r -a-format -predicates byte netstring)
-INCLUDES= $(shell ocamlfind query -r -i-format lablgtk2) -I ../../lib/ocaml $(shell ocamlfind query -r -i-format xml-light) $(OCAMLNETINCLUDES)
+OCAMLNETINCLUDES=$(shell ocamlfind query -r -i-format netstring) $(shell ocamlfind query -r -i-format netclient)
+OCAMLNETCMA=$(shell ocamlfind query -r -a-format -predicates byte netstring) $(shell ocamlfind query -r -a-format -predicates byte netclient)
+INCLUDES= $(shell ocamlfind query -r -i-format lablgtk2) -I ../../lib/ocaml $(shell ocamlfind query -r -i-format xml-light)  $(shell ocamlfind query -r -i-format pcre) $(OCAMLNETINCLUDES)
 LIBS=$(OCAMLNETCMA) glibivy-ocaml.cma lablgtk.cma lablglade.cma lib-pprz.cma lablgnomecanvas.cma xlib-pprz.cma
 CMXA=$(LIBS:.cma=.cmxa)
 
@@ -53,7 +53,7 @@ opt : $(MAIN).opt
 
 $(MAIN) : $(CMO) ../../lib/ocaml/xlib-pprz.cma ../../lib/ocaml/lib-pprz.cma
 	@echo OL $@
-	$(Q)$(OCAMLC) $(OCAMLCFLAGS) -custom $(INCLUDES) unix.cma str.cma xml-light.cma $(LIBS) threads.cma gtkThread.cmo myGtkInit.cmo $(CMO) -o $@
+	$(Q)$(OCAMLC) $(OCAMLCFLAGS) -custom $(INCLUDES) $(OCAMLNETINCLUDES) unix.cma str.cma netstring.cma netclient.cma xml-light.cma $(LIBS) threads.cma gtkThread.cmo myGtkInit.cmo $(CMO) -o $@
 
 $(MAIN).opt : $(CMX)
 	@echo OOL $@
diff --git a/sw/ground_segment/tmtc/Makefile b/sw/ground_segment/tmtc/Makefile
index 977de67274d..34daf7516f7 100644
--- a/sw/ground_segment/tmtc/Makefile
+++ b/sw/ground_segment/tmtc/Makefile
@@ -1,4 +1,4 @@
-# 
+#
 #   $Id$
 #   Copyright (C) 2003-2006 Pascal Brisset, Antoine Drouin
 #
@@ -17,15 +17,15 @@
 # You should have received a copy of the GNU General Public License
 # along with paparazzi; see the file COPYING.  If not, write to
 # the Free Software Foundation, 59 Temple Place - Suite 330,
-# Boston, MA 02111-1307, USA.  
-# 
+# Boston, MA 02111-1307, USA.
+#
 
 # Quiet
 Q=@
 
 LBITS := $(shell getconf LONG_BIT)
 ifeq ($(LBITS),64)
-  FPIC = -fPIC   
+  FPIC = -fPIC
 else
   FPIC =
 endif
@@ -43,7 +43,7 @@ clean:
 OCAMLC = ocamlc
 OCAMLOPT = ocamlopt
 OCAMLLIB = ../../lib/ocaml
-OCAMLNETINCLUDES=$(shell ocamlfind query -r -i-format netstring)
+OCAMLNETINCLUDES=$(shell ocamlfind query -r -i-format netstring) $(shell ocamlfind query -r -i-format netclient)
 OCAMLNETCMA=$(shell ocamlfind query -r -a-format -predicates byte netstring)
 INCLUDES= -I $(OCAMLLIB) -I ../multimon $(shell ocamlfind query -r -i-format lablgtk2) $(shell ocamlfind query -r -i-format xml-light) $(OCAMLNETINCLUDES)
 LIBPPRZCMA=$(OCAMLLIB)/lib-pprz.cma
@@ -169,7 +169,6 @@ ivy_serial_bridge: ivy_serial_bridge.c
 .depend: Makefile
 	ocamldep -I ../../lib/ocaml *.ml* > .depend
 
-ifneq ($(MAKECMDGOALS),clean) 
+ifneq ($(MAKECMDGOALS),clean)
 -include .depend
 endif
-
diff --git a/sw/lib/ocaml/Makefile b/sw/lib/ocaml/Makefile
index 9b559a584cc..1f4f9cd6557 100644
--- a/sw/lib/ocaml/Makefile
+++ b/sw/lib/ocaml/Makefile
@@ -30,7 +30,7 @@ else
   FPIC =
 endif
 
-INCLUDES=  $(shell ocamlfind query -r -i-format xml-light)  $(shell ocamlfind query -r -i-format netstring) $(shell ocamlfind query -r -i-format pcre)
+INCLUDES=  $(shell ocamlfind query -r -i-format xml-light) $(shell ocamlfind query -r -i-format netstring) $(shell ocamlfind query -r -i-format netclient) $(shell ocamlfind query -r -i-format pcre)
 XINCLUDES= $(shell ocamlfind query -r -i-format lablgtk2) $(shell ocamlfind query -r -i-format xml-light)
 OCAMLC=ocamlc
 OCAMLOPT=ocamlopt
diff --git a/sw/lib/ocaml/gm.ml b/sw/lib/ocaml/gm.ml
index 82a564f6946..7e2ce48b674 100644
--- a/sw/lib/ocaml/gm.ml
+++ b/sw/lib/ocaml/gm.ml
@@ -244,20 +244,26 @@ let get_image = fun key ->
     if !policy = NoCache then raise Not_found;
     get_from_cache cache_dir key
   with
-    Not_found ->
-      if !policy = NoHttp then raise Not_available;
-      let rec loop = fun k ->
-    if String.length k >= 1 then
-      let url = url_of_tile_key !maps_source k in
-      let jpg_file = cache_dir // (k ^ ".jpg") in
-      try
-        ignore (Http.file_of_url ~dest:jpg_file url);
-        tile_of_key k, jpg_file
-      with
-        Http.Failure _ -> loop (remove_last_char k)
-    else
-      raise Not_available in
-      loop key
+      Not_found ->
+        if !policy = NoHttp then raise Not_available;
+        let rec loop = fun k ->
+          if String.length k >= 1 then
+            let url = url_of_tile_key !maps_source k in
+            let jpg_file = cache_dir // (k ^ ".jpg") in
+            try
+              ignore (Http.file_of_url ~dest:jpg_file url);
+              tile_of_key k, jpg_file
+            with
+                Http.Not_Found _ -> loop (remove_last_char k)
+              | Http.Blocked _ ->
+                begin
+                  prerr_endline (Printf.sprintf "Seem to be temporarily blocked, '%s'" url);
+                  raise Not_available
+                end
+              | _ -> raise Not_available
+          else
+            raise Not_available in
+        loop key
 
 
 let rec get_tile = fun wgs84 zoom ->
diff --git a/sw/lib/ocaml/http.ml b/sw/lib/ocaml/http.ml
index 3ca1b6db64e..63b3488da3d 100644
--- a/sw/lib/ocaml/http.ml
+++ b/sw/lib/ocaml/http.ml
@@ -1,5 +1,8 @@
-
 exception Failure of string
+exception Not_Found of string
+exception Blocked of string
+
+open Http_client
 
 let file_of_url = fun ?dest url ->
   if String.sub url 0 7 = "file://" then
@@ -9,10 +12,28 @@ let file_of_url = fun ?dest url ->
       match dest with
         Some s -> s
       | None -> Filename.temp_file "fp" ".wget" in
-    let c = Printf.sprintf "wget -nv --cache=off -O %s '%s'" tmp_file url in
-    if Sys.command c = 0 then
-      tmp_file
-    else begin
-      Sys.remove tmp_file;
-      raise (Failure url)
-    end
+    let call = new Http_client.get url in
+    call#set_response_body_storage (`File (fun () -> tmp_file));
+    let pipeline = new Http_client.pipeline in
+    pipeline#add call;
+    pipeline#run ();
+    match call#status with
+      | `Successful ->
+        (* prerr_endline (Printf.sprintf "file sucessfull: %s, '%s'" tmp_file url); *)
+        tmp_file
+      | `Client_error ->
+        begin
+          (* prerr_endline (Printf.sprintf "getting file '%s', client error: %d" url call#response_status_code); *)
+          Sys.remove tmp_file;
+          match call#response_status_code with
+              404 -> raise (Not_Found url)
+            | 403 ->
+              begin
+                (* prerr_endline (Printf.sprintf "Blocked!!!"); *)
+                raise (Blocked url)
+              end
+            | _ -> raise (Failure url)
+        end
+      | _ ->
+        Sys.remove tmp_file;
+        raise (Failure url)
diff --git a/sw/lib/ocaml/http.mli b/sw/lib/ocaml/http.mli
index 96278ef376e..66a147bed5d 100644
--- a/sw/lib/ocaml/http.mli
+++ b/sw/lib/ocaml/http.mli
@@ -1,4 +1,6 @@
 exception Failure of string
+exception Not_Found of string
+exception Blocked of string
 val file_of_url : ?dest:string -> string -> string
 (** [file_of_url ?dest  url] Downloads a given document and returns
 the place where it is stored. Default [dest] is in [/tmp]. *)
diff --git a/sw/tools/Makefile b/sw/tools/Makefile
index b5f7365797c..60b1466b6b9 100644
--- a/sw/tools/Makefile
+++ b/sw/tools/Makefile
@@ -25,8 +25,8 @@ Q=@
 OCAML=ocaml
 OCAMLC=ocamlc
 INCLUDES=-I ../lib/ocaml $(shell ocamlfind query -r -i-format xml-light) -I .
-OCAMLNETINCLUDES=$(shell ocamlfind query -r -i-format netstring)
-OCAMLNETCMA=$(shell ocamlfind query -r -a-format -predicates byte netstring)
+OCAMLNETINCLUDES=$(shell ocamlfind query -r -i-format netstring) $(shell ocamlfind query -r -i-format netclient)
+OCAMLNETCMA=$(shell ocamlfind query -r -a-format -predicates byte netstring) $(shell ocamlfind query -r -a-format -predicates byte netclient)
 OCAMLLEX=ocamllex
 OCAMLYACC=ocamlyacc
 
@@ -44,6 +44,10 @@ gen_flight_plan.cmo : fp_proc.cmi
 
 gen_common.cmo : gen_common.cmi
 
+gen_srtm.out : ../lib/ocaml/lib-pprz.cma
+	@echo OC $@
+	$(Q)$(OCAMLC) $(INCLUDES) $(OCAMLNETINCLUDES) -custom -o $@ unix.cma str.cma netstring.cma netclient.cma xml-light.cma ivy-ocaml.cma lib-pprz.cma gen_common.cmo $^
+
 mergelogs: mergelogs.c
 	gcc mergelogs.c -o mergelogs
 
diff --git a/sw/tools/wiki_gen/Makefile b/sw/tools/wiki_gen/Makefile
index c4e2cd54f31..bc2dee0f64f 100644
--- a/sw/tools/wiki_gen/Makefile
+++ b/sw/tools/wiki_gen/Makefile
@@ -14,7 +14,7 @@ Q=@
 OCAML=ocaml
 OCAMLC=ocamlc
 INCLUDES=-I ../../lib/ocaml $(shell ocamlfind query -r -i-format xml-light)
-OCAMLNETINCLUDES=$(shell ocamlfind query -r -i-format netstring)
+OCAMLNETINCLUDES=$(shell ocamlfind query -r -i-format netstring) $(shell ocamlfind query -r -i-format netclient)
 OCAMLNETCMA=$(shell ocamlfind query -r -a-format -predicates byte netstring)