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mongoose-os-libs / pppos

PPPoS / cellullar modem support
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Connection drops when transferring larger files #5

Closed nicoloboatto closed 5 years ago

nicoloboatto commented 5 years ago

The device (an M5Stack with SIM800L module) manages to connect to the mDash and it successfully sends smaller files over such as conf9.json which is just a few lines.

Whenever I request a larger file I get these errors and from there on the connection stops working altogether.

[Feb 9 04:54:59.525] rpc_fs_get_handler Sending conf0.json [Feb 9 04:55:32.785] mg_ssl_mbed_log 0x3ffd10a8 mbedtls_ssl_flush_output() returned -78 (-0x004e) [Feb 9 04:55:32.793] mg_ssl_mbed_log 0x3ffd10a8 mbedtls_ssl_write_record() returned -78 (-0x004e) [Feb 9 04:55:32.801] mg_ssl_mbed_log 0x3ffd10a8 mbedtls_ssl_send_alert_message() returned -78 (-0x004e) [Feb 9 04:55:37.811] mg_rpc_channel_ws_ou 0x3ffc3954 Connecting to wss://dash.mongoose-os.com/api/v2/rpc, SSL? 1 [Feb 9 04:55:39.257] mgos_pppos_status_cb Error 9 (phase 0), reconnect [Feb 9 04:55:39.263] mgos_ppposdispatch Connecting (UART1, APN 'everywhere')... [Feb 9 04:55:39.269] mgos_net_on_change_c PPP: disconnected [Feb 9 04:55:41.978] mgos_net_on_change_c PPP: connecting [Feb 9 04:55:44.989] mgos_ppposdispatch Command timed out: ATH [Feb 9 04:55:44.995] mgos_ppposdispatch Connecting (UART1, APN 'everywhere')... [Feb 9 04:55:45.001] mgos_net_on_change_c PPP: disconnected [Feb 9 04:55:47.643] mg_resolve_async_eh Failed to resolve 'dash.mongoose-os.com', server 8.8.8.8 [Feb 9 04:55:47.649] mg_rpc_ws_out_handle 0x3ffc3954 TCP connect failed: -1 [Feb 9 04:55:47.978] mgos_net_on_change_c PPP: connecting [Feb 9 04:55:50.989] mgos_ppposdispatch Command timed out: ATH [Feb 9 04:55:50.995] mgos_ppposdispatch Connecting (UART1, APN 'everywhere')... [Feb 9 04:55:51.002] mgos_net_on_change_c PPP: disconnected [Feb 9 04:55:53.978] mgos_net_on_change_c PPP: connecting [Feb 9 04:55:53.994] mgos_pppos_gsn_cb , IMEI: TE0

As you can see the IMEI that gets printed seems to be the response to another command, it's as if the serial connection got out of sync.

rojer commented 5 years ago

there has been a lot of work lately specifically on connection stability. i can tell that you are using release version, please try latest master of both mongoose os and the driver - mos update latest. also, please use UART2 (because of this). i have tested specifically with SIM800L and the connection works fine. if it doesn't work well even on master, please reopen.

rojer commented 5 years ago

it looks like you are using the same uart for pppos and console? can you share your pppos settings?