* write all message body / payload to Stream * @param stream Stream * * @return bytes written ( negative values are error codes ) */
| 862 | * @return bytes written ( negative values are error codes ) |
| 863 | */ |
| 864 | int HTTPClient::writeToStream(Stream *stream) { |
| 865 | |
| 866 | if (!stream) { |
| 867 | return returnError(HTTPC_ERROR_NO_STREAM); |
| 868 | } |
| 869 | |
| 870 | if (!connected()) { |
| 871 | return returnError(HTTPC_ERROR_NOT_CONNECTED); |
| 872 | } |
| 873 | |
| 874 | // get length of document (is -1 when Server sends no Content-Length header) |
| 875 | int len = _size; |
| 876 | int ret = 0; |
| 877 | |
| 878 | if (_transferEncoding == HTTPC_TE_IDENTITY) { |
| 879 | ret = writeToStreamDataBlock(stream, len); |
| 880 | |
| 881 | // have we an error? |
| 882 | if (ret < 0) { |
| 883 | return returnError(ret); |
| 884 | } |
| 885 | } else if (_transferEncoding == HTTPC_TE_CHUNKED) { |
| 886 | int size = 0; |
| 887 | while (1) { |
| 888 | if (!connected()) { |
| 889 | return returnError(HTTPC_ERROR_CONNECTION_LOST); |
| 890 | } |
| 891 | String chunkHeader = _client->readStringUntil('\n'); |
| 892 | |
| 893 | if (chunkHeader.length() <= 0) { |
| 894 | return returnError(HTTPC_ERROR_READ_TIMEOUT); |
| 895 | } |
| 896 | |
| 897 | chunkHeader.trim(); // remove \r |
| 898 | |
| 899 | // read size of chunk |
| 900 | len = (uint32_t)strtol((const char *)chunkHeader.c_str(), NULL, 16); |
| 901 | size += len; |
| 902 | log_v(" read chunk len: %d", len); |
| 903 | |
| 904 | // data left? |
| 905 | if (len > 0) { |
| 906 | int r = writeToStreamDataBlock(stream, len); |
| 907 | if (r < 0) { |
| 908 | // error in writeToStreamDataBlock |
| 909 | return returnError(r); |
| 910 | } |
| 911 | ret += r; |
| 912 | } else { |
| 913 | |
| 914 | // if no length Header use global chunk size |
| 915 | if (_size <= 0) { |
| 916 | _size = size; |
| 917 | } |
| 918 | |
| 919 | // check if we have write all data out |
| 920 | if (ret != _size) { |
| 921 | return returnError(HTTPC_ERROR_STREAM_WRITE); |