11 Replies Latest reply on Jun 17, 2015 2:42 PM by hmoore

    http invalid chunked encoding error

      Hi,

      Test on BCM94390WCD2 with FreeRTOS+LwIP (SDK-3.1.0-beta1).

       

      We hit http invalid chunked encoding error, this can be reproduced by:

      Use snip/pin_webserver app to test it:

      1. Add below line to http database of apps/snip/ping_webserver/ping_webserver.c

          { "/apps/ping_webserver/test.css", "text/css",                   WICED_RESOURCE_URL_CONTENT,  .url_content.resource_data  = &resources_apps_DIR_ping_webserver_DIR_test_css, },

      2. Copy test test.css to resources/apps/ping_webserver/test.css

      3. Add apps/ping_webserver/test.css to ping_webserver.mk

      4. Send http request

       

      Attached 3 files to reproduce this issue:

      1. the screensoot to show the invalid chunked encoding error on browser

      2. the test.css file for download test

      3. the curl download log shows "curl: (56) Problem (3) in the Chunked-Encoded data"

        • 1. Re: http invalid chunked encoding error

          I test again with ThreadX-NetX for this issue.

          With ThreadX-NetX build, it does not show invalid chunked encoding error.

          However, it still does not work because the download is always incomplete.

          This can be easily test with browser or curl.

          • 2. Re: http invalid chunked encoding error

            hi,

            Just want to highlight that this issue is a major issue for us.

            Some css/javascript files cannot be successfully download, so the web UI

            cannot properly loaded.

            So we are not able to show a working demo for our customer at this moment.

            • 3. Re: http invalid chunked encoding error
              VikramR_26

              sam.lin,

               

              I'm trying to work on your issue, shall let you know soon.

               

              thnx,

              vik86

              1 of 1 people found this helpful
              • 4. Re: http invalid chunked encoding error
                VikramR_26

                Sam we tried reproducing your issue. We tried on two different setups and different boards and we were not able to reproduce. Could you verify once more and provide more details on the issue.

                 

                thnx

                vik86

                • 5. Re: http invalid chunked encoding error

                  Hi vik86,

                  I test this many times tody and found it's hard to reproduce it.

                  I only see the invalid chunked encoding error once today.

                  It's a bit strange because on the day I reported this issue I can

                  100% reproduce it.

                   

                  I'll try if I can find a better way to reproduce it.

                  Thanks.

                  • 6. Re: http invalid chunked encoding error

                    Hi vik86,

                    I found the most easy way to reproduce is to press F5 on the browser to reload

                    the page.

                     

                    I'm using google chrome which has develop tool to show the chunked encoding

                    error. Press 「Ctrl+Shift+I」on google chrome browser and select "Network" section.

                    Then press F5 multiple times and you can see the error.

                     

                    Thanks.

                    • 7. Re: http invalid chunked encoding error

                      BTW, don't press F5 too quickly.

                      Otherwise, you may see the request is in "pending" status and then the

                      request never success. This is probably another bug that need fix.

                      But for the invalid-chunked-encoding error, just don't press F5 too quickly

                      in case you hit another bug.

                      • 8. Re: http invalid chunked encoding error

                        hi vik86,

                        Just want to know if you can reproduce this issue now?

                        We have a more complex UI that includes more javascript and css files

                        so it's easy to hit this issue in our application.

                         

                        Thanks.

                        • 9. Re: http invalid chunked encoding error

                          vik86 wrote:

                           

                          sam.lin,

                           

                          I'm trying to work on your issue, shall let you know soon.

                          hi vik86,

                           

                          My debug code shows the invalid chunked encoding issue happens in below code path.

                          Can you take a look at this?

                           

                          In WICED/network/LwIP/ver1.4.0.rc1/src/api/api_msg.c,

                                  available = tcp_sndbuf(conn->pcb.tcp);

                                  when available < len, this issue happens.

                           

                                  // e.g. my debug code shows len=484 conn->current_msg->msg.w.len=1412

                                  if (dontblock && (len < conn->current_msg->msg.w.len)) {

                                          /* failed to send all data at once -> nonblocking write not possible */

                                          err = ERR_MEM;

                                  }      

                           

                                  Then it goes to nonblocking write failed path:

                                  if (dontblock && (err == ERR_MEM)) {

                                          /* nonblocking write failed */

                                          write_finished = 1;

                                          err = ERR_WOULDBLOCK;

                                          /* let poll_tcp check writable space to mark the pcb

                                                  writable again */

                                          conn->flags |= NETCONN_FLAG_CHECK_WRITESPACE;

                                          /* let select mark this pcb as non-writable. */

                                           API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);

                                  }

                           

                          thanks.

                          • 10. Re: http invalid chunked encoding error

                            Dear

                             

                              For the this issues, I have following test results in 4390 with SDK3.1.1

                             

                              For small application, it works fine.    but big size application code it has problem in ThreadX

                              Our application console :

                                                                   Target 4390            |  Flash  |   RAM   |

                                       By FreeRTOS :  TOTAL (bytes)                     |       0 |  368846 |  

                                       By ThreadX    :   TOTAL (bytes)                    |       0 |  387651 |

                             

                               -   FreeRTOS works fine for OTA,

                               - ThreadX works ( wifi connection and ping is OK )  but web access failed

                             

                              - ota_fr application test

                               -   FreeRTOS works fine for OTA,

                               - ThreadX works fine for OTA,

                             

                             

                            TKS

                            • 11. Re: http invalid chunked encoding error

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