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fix(ws_transport): fix server-key corruption when first fragment lost… (IDFGH-12742) #13724

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fix(ws_transport): fix server-key corruption when first fragment lost… (IDFGH-12742) #13724

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30 changes: 16 additions & 14 deletions components/tcp_transport/transport_ws.c
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Original file line number Diff line number Diff line change
Expand Up @@ -307,20 +307,6 @@ static int ws_connect(esp_transport_handle_t t, const char *host, int port, int
return -1;
}

if (delim_ptr != NULL) {
size_t delim_pos = delim_ptr - ws->buffer + sizeof(delimiter) - 1;
size_t remaining_len = ws->buffer_len - delim_pos;
if (remaining_len > 0) {
memmove(ws->buffer, ws->buffer + delim_pos, remaining_len);
ws->buffer_len = remaining_len;
} else {
#ifdef CONFIG_WS_DYNAMIC_BUFFER
free(ws->buffer);
ws->buffer = NULL;
#endif
ws->buffer_len = 0;
}
}
// See esp_crypto_sha1() arg size
unsigned char expected_server_sha1[20];
// Size of base64 coded string see above
Expand All @@ -340,6 +326,22 @@ static int ws_connect(esp_transport_handle_t t, const char *host, int port, int
ESP_LOGE(TAG, "Invalid websocket key");
return -1;
}

if (delim_ptr != NULL) {
size_t delim_pos = delim_ptr - ws->buffer + sizeof(delimiter) - 1;
size_t remaining_len = ws->buffer_len - delim_pos;
if (remaining_len > 0) {
memmove(ws->buffer, ws->buffer + delim_pos, remaining_len);
ws->buffer_len = remaining_len;
} else {
#ifdef CONFIG_WS_DYNAMIC_BUFFER
free(ws->buffer);
ws->buffer = NULL;
#endif
ws->buffer_len = 0;
}
}

return 0;
}

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