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Calling POST from C# code does not process body correctly #915

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MJSchut opened this issue Aug 24, 2023 · 2 comments · Fixed by #924
Closed

Calling POST from C# code does not process body correctly #915

MJSchut opened this issue Aug 24, 2023 · 2 comments · Fixed by #924

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@MJSchut
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MJSchut commented Aug 24, 2023

System details

Output of sessioninfo::session_info()():

> sessioninfo::session_info()
- Session info -----------------------------------------------------------------------------------------------------------------------------------------
 setting  value
 version  R version 3.6.3 (2020-02-29)
 os       Windows 10 x64 (build 19044)
 system   x86_64, mingw32
 ui       RStudio
 language (EN)
 collate  English_United States.1252
 ctype    English_United States.1252
 tz       Europe/Berlin
 date     2023-08-24
 rstudio  2023.06.1+524 Mountain Hydrangea (desktop)
 pandoc   3.1.1 @ C:/Users/Martijn.Schut/AppData/Local/Programs/RStudio/resources/app/bin/quarto/bin/tools/ (via rmarkdown)

- Packages ---------------------------------------------------------------------------------------------------------------------------------------------
 ! package       * version  date (UTC) lib source
 1 abind           1.4-5    2016-07-21 [1] RSPM (R 3.6.3)
 1 alluvial      * 0.1-2    2016-09-09 [1] RSPM (R 3.6.2)
 1 anytime       * 0.3.9    2020-08-27 [1] RSPM (R 3.6.3)
 1 arrow         * 9.0.0    2022-08-10 [1] RSPM (R 3.6.3)
 1 askpass         1.1      2019-01-13 [1] RSPM (R 3.6.3)
 1 assertthat      0.2.1    2019-03-21 [1] RSPM (R 3.6.3)
 1 automap       * 1.0-16   2022-04-05 [1] RSPM (R 3.6.3)
 1 AzureAuth     * 1.3.3    2021-09-13 [1] RSPM (R 3.6.3)
 1 AzureGraph      1.3.2    2021-11-28 [1] RSPM (R 3.6.3)
 1 AzureRMR        2.4.3    2021-10-23 [1] RSPM (R 3.6.3)
 1 AzureStor     * 3.7.0    2022-05-25 [1] RSPM (R 3.6.3)
 1 backports       1.4.1    2021-12-13 [1] RSPM (R 3.6.3)
 1 base64enc       0.1-3    2015-07-28 [1] CRAN (R 3.6.3)
 1 BBmisc          1.13     2022-09-29 [1] RSPM (R 3.6.3)
 1 bit             4.0.5    2022-11-15 [1] RSPM (R 3.6.3)
 1 bit64           4.0.5    2020-08-30 [1] RSPM (R 3.6.3)
 1 boot            1.3-24   2019-12-20 [2] CRAN (R 3.6.3)
 1 Boruta        * 8.0.0    2022-11-12 [1] RSPM (R 3.6.3)
 1 broom           1.0.3    2023-01-25 [1] RSPM (R 3.6.3)
 1 bslib           0.4.2    2022-12-16 [1] RSPM (R 3.6.3)
 1 cachem          1.0.6    2021-08-19 [1] CRAN (R 3.6.3)
 1 cellranger      1.1.0    2016-07-27 [1] RSPM (R 3.6.3)
 1 checkmate     * 2.1.0    2022-04-21 [1] RSPM (R 3.6.3)
 1 checkpoint      1.0.2    2022-01-28 [2] RSPM (R 3.6.3)
 1 class           7.3-15   2019-01-01 [2] CRAN (R 3.6.3)
 1 cli             3.6.0    2023-01-09 [1] RSPM (R 3.6.3)
 1 cluster       * 2.1.4    2022-08-22 [1] RSPM (R 3.6.3)
 1 codetools       0.2-16   2018-12-24 [2] CRAN (R 3.6.3)
 1 colorspace      2.1-0    2023-01-23 [1] RSPM (R 3.6.3)
 1 colourpicker  * 1.2.0    2022-10-28 [1] RSPM (R 3.6.3)
 1 combinat        0.0-8    2012-10-29 [1] RSPM (R 3.6.3)
 1 conf.design   * 2.0.0    2013-02-23 [1] RSPM (R 3.6.2)
 1 corrplot      * 0.92     2021-11-18 [1] RSPM (R 3.6.3)
 1 crosstalk       1.2.0    2021-11-04 [1] RSPM (R 3.6.3)
 1 curl          * 5.0.0    2023-01-12 [1] RSPM (R 3.6.3)
 1 DALEX         * 2.4.3    2023-01-15 [1] RSPM (R 3.6.3)
 1 data.table    * 1.14.6   2022-11-16 [1] RSPM (R 3.6.3)
 1 dbscan        * 1.1-11   2022-10-27 [1] RSPM (R 3.6.3)
 1 digest          0.6.31   2022-12-11 [1] CRAN (R 3.6.3)
 1 DoE.base      * 1.2-1    2022-05-09 [1] RSPM (R 3.6.3)
 1 dplyr         * 1.1.0    2023-01-29 [1] RSPM (R 3.6.3)
 1 DT            * 0.27     2023-01-17 [1] RSPM (R 3.6.3)
 1 e1071         * 1.7-12   2022-10-24 [1] RSPM (R 3.6.3)
 1 ellipsis        0.3.2    2021-04-29 [1] CRAN (R 3.6.3)
 1 emoa          * 0.5-0.1  2020-03-06 [1] RSPM (R 3.6.3)
 1 EnvStats      * 2.7.0    2022-03-07 [1] RSPM (R 3.6.3)
 1 evaluate        0.20     2023-01-17 [1] RSPM (R 3.6.3)
 1 fansi           1.0.4    2023-01-22 [1] CRAN (R 3.6.3)
 1 farver          2.1.1    2022-07-06 [1] RSPM (R 3.6.3)
 1 fastmap         1.1.0    2021-01-25 [1] CRAN (R 3.6.3)
 1 fastmatch       1.1-3    2021-07-23 [1] RSPM (R 3.6.3)
 1 fastshap      * 0.0.7    2021-12-06 [1] RSPM (R 3.6.3)
 1 FNN             1.1.3.1  2022-05-23 [1] RSPM (R 3.6.3)
 1 fontawesome     0.5.0    2023-01-25 [1] RSPM (R 3.6.3)
 1 foreach         1.5.2    2022-02-02 [1] RSPM (R 3.6.3)
 1 forecast      * 8.20     2023-01-06 [1] RSPM (R 3.6.3)
 1 foreign         0.8-75   2020-01-20 [2] CRAN (R 3.6.3)
 1 fracdiff        1.5-2    2022-10-31 [1] RSPM (R 3.6.3)
 1 FrF2          * 2.2-3    2022-05-09 [1] RSPM (R 3.6.3)
 1 fs              1.6.0    2023-01-23 [1] RSPM (R 3.6.3)
 1 generics        0.1.3    2022-07-05 [1] RSPM (R 3.6.3)
 1 geometry      * 0.4.6.1  2022-07-04 [1] RSPM (R 3.6.3)
 1 GGally        * 2.1.2    2021-06-21 [1] RSPM (R 3.6.3)
 1 ggdendro      * 0.1.23   2022-02-16 [1] RSPM (R 3.6.3)
 1 ggforce       * 0.4.1    2022-10-04 [1] RSPM (R 3.6.3)
 1 ggplot2       * 3.4.0    2022-11-04 [1] RSPM (R 3.6.3)
 1 ggrepel       * 0.9.2    2022-11-06 [1] RSPM (R 3.6.3)
 1 glmnet        * 4.1-2    2021-06-24 [1] RSPM (R 3.6.3)
 1 glue            1.6.2    2022-02-24 [2] CRAN (R 3.6.3)
 1 gmp             0.6-10   2023-01-17 [1] RSPM (R 3.6.3)
 1 grf           * 2.2.1    2022-12-14 [1] RSPM (R 3.6.3)
 1 gridExtra       2.3      2017-09-09 [1] RSPM (R 3.6.3)
 1 gstat           2.0-7    2021-03-19 [1] RSPM (R 3.6.3)
 1 gtable          0.3.1    2022-09-01 [1] RSPM (R 3.6.3)
 1 gtools        * 3.9.4    2022-11-27 [1] RSPM (R 3.6.3)
 1 here            1.0.1    2020-12-13 [1] RSPM (R 3.6.3)
 1 hexbin        * 1.28.2   2021-01-08 [1] RSPM (R 3.6.3)
 1 hms             1.1.2    2022-08-19 [1] RSPM (R 3.6.3)
 1 htmltools       0.5.4    2022-12-07 [1] CRAN (R 3.6.3)
 1 htmlwidgets     1.6.1    2023-01-07 [1] RSPM (R 3.6.3)
 1 httpuv          1.6.8    2023-01-12 [1] RSPM (R 3.6.3)
 1 httr          * 1.4.4    2022-08-17 [1] RSPM (R 3.6.3)
 1 ICEbox        * 1.1.5    2022-08-22 [1] RSPM (R 3.6.3)
 1 igraph          1.3.5    2022-09-22 [1] RSPM (R 3.6.3)
 1 ingredients     2.3.0    2023-01-15 [1] RSPM (R 3.6.3)
 1 intervals       0.15.2   2020-04-04 [1] RSPM (R 3.6.3)
 1 iterators       1.0.14   2022-02-05 [1] RSPM (R 3.6.3)
 1 jose            1.2.0    2021-11-06 [1] RSPM (R 3.6.3)
 1 jquerylib       0.1.4    2021-04-26 [1] RSPM (R 3.6.3)
 1 jsonlite      * 1.8.4    2022-12-06 [1] RSPM (R 3.6.3)
 1 kableExtra    * 1.3.4    2021-02-20 [1] RSPM (R 3.6.3)
 1 keras         * 2.11.0   2022-12-20 [1] RSPM (R 3.6.3)
 1 knitr           1.42     2023-01-25 [1] RSPM (R 3.6.3)
 1 later           1.3.0    2021-08-18 [1] RSPM (R 3.6.3)
 1 lattice         0.20-38  2018-11-04 [2] CRAN (R 3.6.3)
 1 lazyeval        0.2.2    2019-03-15 [1] RSPM (R 3.6.3)
 1 lhs             1.1.6    2022-12-17 [1] RSPM (R 3.6.3)
 1 lifecycle       1.0.3    2022-10-07 [1] RSPM (R 3.6.3)
 1 lmtest          0.9-40   2022-03-21 [1] RSPM (R 3.6.3)
 1 lubridate     * 1.9.1    2023-01-24 [1] RSPM (R 3.6.3)
 1 magic           1.6-1    2022-11-16 [1] RSPM (R 3.6.3)
 1 magrittr        2.0.3    2022-03-30 [1] RSPM (R 3.6.3)
 1 maptools        1.1-6    2022-12-14 [1] RSPM (R 3.6.3)
 1 maptree         1.4-8    2022-04-06 [1] RSPM (R 3.6.3)
 1 MASS          * 7.3-58.2 2023-01-23 [1] RSPM (R 3.6.3)
 1 mathjaxr        1.6-0    2022-02-28 [1] RSPM (R 3.6.3)
 1 Matrix        * 1.5-3    2022-11-11 [1] RSPM (R 3.6.3)
 1 mco             1.15.6   2020-10-09 [1] RSPM (R 3.6.3)
 1 memoise       * 2.0.1    2021-11-26 [1] RSPM (R 3.6.3)
 1 mice          * 3.15.0   2022-11-19 [1] RSPM (R 3.6.3)
 1 mime            0.12     2021-09-28 [1] CRAN (R 3.6.3)
 1 minimalRSD    * 1.0.0    2017-01-04 [1] RSPM (R 3.6.2)
 1 miniUI          0.1.1.1  2018-05-18 [1] RSPM (R 3.6.3)
 1 misc3d          0.9-1    2021-10-07 [1] RSPM (R 3.6.3)
 1 mlr           * 2.19.1   2022-09-29 [1] RSPM (R 3.6.3)
 1 mlrMBO        * 1.1.5.1  2022-07-04 [1] RSPM (R 3.6.3)
 1 munsell         0.5.0    2018-06-12 [1] RSPM (R 3.6.3)
 1 nabor         * 0.5.0    2018-07-11 [1] RSPM (R 3.6.3)
 1 nlme            3.1-144  2020-02-06 [2] CRAN (R 3.6.3)
 1 nnet          * 7.3-18   2022-09-28 [1] RSPM (R 3.6.3)
 1 numbers         0.8-2    2021-05-14 [1] RSPM (R 3.6.3)
 1 onehot        * 0.1.1    2017-05-02 [1] RSPM (R 3.6.2)
 1 openssl         2.0.5    2022-12-06 [1] RSPM (R 3.6.3)
 1 openxlsx      * 4.2.5.1  2022-10-24 [1] RSPM (R 3.6.3)
 1 parallelMap   * 1.5.1    2021-06-28 [1] RSPM (R 3.6.3)
 1 ParamHelpers  * 1.14.1   2022-07-04 [1] RSPM (R 3.6.3)
 1 partitions      1.10-7   2022-07-21 [1] RSPM (R 3.6.3)
 1 pdp           * 0.8.1    2022-06-07 [1] RSPM (R 3.6.3)
 1 pillar          1.8.1    2022-08-19 [1] RSPM (R 3.6.3)
 1 pkgconfig       2.0.3    2019-09-22 [1] RSPM (R 3.6.3)
 1 plot3D          1.4      2021-05-22 [1] RSPM (R 3.6.3)
 1 plotly        * 4.10.1   2022-11-07 [1] RSPM (R 3.6.3)
 1 pls           * 2.8-1    2022-07-16 [1] RSPM (R 3.6.3)
 1 plumber       * 1.2.1    2022-09-06 [1] RSPM (R 3.6.3)
 1 plyr            1.8.8    2022-11-11 [1] RSPM (R 3.6.3)
 1 png             0.1-8    2022-11-29 [1] RSPM (R 3.6.3)
 1 polyclip        1.10-4   2022-10-20 [1] RSPM (R 3.6.3)
 1 polynom         1.4-1    2022-04-11 [1] RSPM (R 3.6.3)
 1 pROC          * 1.18.0   2021-09-03 [1] RSPM (R 3.6.3)
 1 promises        1.2.0.1  2021-02-11 [1] RSPM (R 3.6.3)
 1 proxy           0.4-27   2022-06-09 [1] RSPM (R 3.6.3)
 1 pso           * 1.0.4    2022-04-12 [1] RSPM (R 3.6.3)
 1 purrr           1.0.1    2023-01-10 [1] RSPM (R 3.6.3)
 1 quadprog        1.5-8    2019-11-20 [1] RSPM (R 3.6.3)
 1 quantmod        0.4.20   2022-04-29 [1] RSPM (R 3.6.3)
 1 R6              2.5.1    2021-08-19 [1] RSPM (R 3.6.3)
 1 ragg          * 1.2.5    2023-01-12 [1] RSPM (R 3.6.3)
 1 randomForest  * 4.6-14   2018-03-25 [1] RSPM (R 3.6.3)
 1 ranger        * 0.14.1   2022-06-18 [1] RSPM (R 3.6.3)
 1 rappdirs        0.3.3    2021-01-31 [2] CRAN (R 3.6.3)
 1 rbibutils       2.2.13   2023-01-13 [1] RSPM (R 3.6.3)
 1 rclipboard    * 0.1.6    2022-08-07 [1] RSPM (R 3.6.3)
 1 RColorBrewer  * 1.1-3    2022-04-03 [1] RSPM (R 3.6.3)
 1 Rcpp          * 1.0.10   2023-01-22 [1] RSPM (R 3.6.3)
 2 RcppParallel    5.1.6    2023-01-09 [1] RSPM (R 3.6.3)
 1 RcppZiggurat  * 0.1.6    2020-10-20 [1] RSPM (R 3.6.3)
 1 Rdpack          2.4      2022-07-20 [1] RSPM (R 3.6.3)
 1 readr         * 2.1.3    2022-10-01 [1] RSPM (R 3.6.3)
 1 readxl        * 1.4.1    2022-08-17 [1] RSPM (R 3.6.3)
 1 reshape         0.8.9    2022-04-12 [1] RSPM (R 3.6.3)
 1 reticulate    * 1.28     2023-01-27 [1] RSPM (R 3.6.3)
 1 Rfast         * 2.0.3    2021-05-17 [1] RSPM (R 3.6.3)
 1 RJSONIO         1.3-1.8  2023-01-31 [1] RSPM (R 3.6.3)
 1 rlang           1.0.6    2022-09-24 [1] RSPM (R 3.6.3)
 1 rmarkdown       2.20     2023-01-19 [1] RSPM (R 3.6.3)
 1 rpart         * 4.1.19   2022-10-21 [1] RSPM (R 3.6.3)
 1 rprojroot       2.0.3    2022-04-02 [2] CRAN (R 3.6.3)
 1 rsconnect       0.8.29   2023-01-09 [1] RSPM (R 3.6.3)
 1 rstudioapi      0.14     2022-08-22 [1] RSPM (R 3.6.3)
 1 Rtsne         * 0.16     2022-04-17 [1] RSPM (R 3.6.3)
 1 rvest           1.0.3    2022-08-19 [1] RSPM (R 3.6.3)
 1 sass            0.4.5    2023-01-24 [1] RSPM (R 3.6.3)
 1 scales          1.2.1    2022-08-20 [1] RSPM (R 3.6.3)
 1 scatterplot3d   0.3-42   2022-09-08 [1] RSPM (R 3.6.3)
 1 sensitivity   * 1.27.1   2022-08-09 [1] RSPM (R 3.6.3)
 1 sessioninfo   * 1.2.2    2021-12-06 [1] RSPM (R 3.6.3)
 1 sfsmisc       * 1.1-14   2022-11-24 [1] RSPM (R 3.6.3)
 1 shape           1.4.6    2021-05-19 [1] RSPM (R 3.6.3)
 1 shiny         * 1.7.4    2022-12-15 [1] RSPM (R 3.6.3)
 1 shinyFiles    * 0.9.3    2022-08-19 [1] RSPM (R 3.6.3)
 1 shinyjqui     * 0.4.1    2022-02-03 [1] RSPM (R 3.6.3)
 1 shinyWidgets  * 0.7.6    2023-01-08 [1] RSPM (R 3.6.3)
 1 SimJoint      * 0.3.9    2021-12-09 [1] RSPM (R 3.6.3)
 1 smoof         * 1.6.0.2  2020-02-18 [1] RSPM (R 3.6.3)
 1 sp            * 1.6-0    2023-01-19 [1] RSPM (R 3.6.3)
 1 spacetime       1.2-8    2022-06-17 [1] RSPM (R 3.6.3)
 1 stringi         1.7.12   2023-01-11 [1] RSPM (R 3.6.3)
 1 stringr       * 1.5.0    2022-12-02 [1] RSPM (R 3.6.3)
 1 survival        3.1-8    2019-12-03 [2] CRAN (R 3.6.3)
 1 svglite         2.1.1    2023-01-10 [1] RSPM (R 3.6.3)
 1 swagger         3.33.1   2020-10-02 [1] CRAN (R 3.6.3)
 1 systemfonts     1.0.4    2022-02-11 [1] RSPM (R 3.6.3)
 1 tensorflow    * 2.11.0   2022-12-19 [1] RSPM (R 3.6.3)
 1 textshaping     0.3.6    2021-10-13 [1] RSPM (R 3.6.3)
 1 tfruns          1.5.1    2022-09-05 [1] RSPM (R 3.6.3)
 1 tgp           * 2.4-17   2020-09-20 [1] RSPM (R 3.6.3)
 1 tibble          3.1.8    2022-07-22 [1] CRAN (R 3.6.3)
 1 tidyr           1.3.0    2023-01-24 [1] RSPM (R 3.6.3)
 1 tidyselect      1.2.0    2022-10-10 [1] RSPM (R 3.6.3)
 1 timechange      0.2.0    2023-01-11 [1] RSPM (R 3.6.3)
 1 timeDate        4022.108 2023-01-07 [1] RSPM (R 3.6.3)
 1 tippy         * 0.1.0    2021-01-11 [1] RSPM (R 3.6.3)
 1 tseries         0.10-53  2023-01-31 [1] RSPM (R 3.6.3)
 1 TTR             0.24.3   2021-12-12 [1] CRAN (R 3.6.3)
 1 tweenr          2.0.2    2022-09-06 [1] RSPM (R 3.6.3)
 1 tzdb            0.3.0    2022-03-28 [1] RSPM (R 3.6.3)
 1 urca            1.3-3    2022-08-29 [1] RSPM (R 3.6.3)
 1 utf8            1.2.3    2023-01-31 [1] CRAN (R 3.6.3)
 1 uuid          * 1.1-0    2022-04-19 [1] RSPM (R 3.6.3)
 1 vcd             1.4-10   2022-06-09 [1] RSPM (R 3.6.3)
 1 vctrs           0.5.2    2023-01-23 [1] RSPM (R 3.6.3)
 1 viridis       * 0.6.2    2021-10-13 [1] RSPM (R 3.6.3)
 1 viridisLite   * 0.4.1    2022-08-22 [1] RSPM (R 3.6.3)
 1 waiter        * 0.2.5    2022-01-03 [1] RSPM (R 3.6.3)
 1 webshot         0.5.4    2022-09-26 [1] RSPM (R 3.6.3)
 1 webutils        1.1      2020-04-28 [1] CRAN (R 3.6.3)
 1 whisker         0.4.1    2022-12-05 [1] RSPM (R 3.6.3)
 1 withr           2.5.0    2022-03-03 [2] CRAN (R 3.6.3)
 1 xfun            0.37     2023-01-31 [1] RSPM (R 3.6.3)
 1 xgboost       * 0.90.0.2 2019-08-01 [1] RSPM (R 3.6.3)
 1 XML           * 3.99-0.3 2020-01-20 [1] RSPM (R 3.6.3)
 1 xml2            1.3.3    2021-11-30 [1] RSPM (R 3.6.3)
 1 xtable          1.8-4    2019-04-21 [1] RSPM (R 3.6.3)
 1 xts             0.12.2   2022-10-16 [1] RSPM (R 3.6.3)
 1 yaml            2.3.7    2023-01-23 [2] CRAN (R 3.6.3)
 1 zeallot         0.1.0    2018-01-28 [1] RSPM (R 3.6.3)
 1 zip             2.2.2    2022-10-26 [1] RSPM (R 3.6.3)
 1 zoo             1.8-11   2022-09-17 [1] RSPM (R 3.6.3)

 [1] C:/Apps/.checkpoint/2023-02-01/lib/x86_64-w64-mingw32/3.6.3
 [2] C:/Apps/R-3.6.3/library

 D -- DLL MD5 mismatch, broken installation.

- Python configuration ---------------------------------------------------------------------------------------------------------------------------------
 python:         C:/Apps/Anaconda/envs/rpy/python.exe
 libpython:      C:/Apps/Anaconda/envs/rpy/python38.dll
 pythonhome:     C:/Apps/Anaconda/envs/rpy
 version:        3.8.6 | packaged by conda-forge | (default, Jan 25 2021, 22:54:47) [MSC v.1916 64 bit (AMD64)]
 Architecture:   64bit
 numpy:          C:/Apps/Anaconda/envs/rpy/Lib/site-packages/numpy
 numpy_version:  1.21.6
 tensorflow:     C:\Apps\Anaconda\envs\rpy\lib\site-packages\tensorflow\__init__.p
 
 NOTE: Python version was forced by use_python function

Example application or steps to reproduce the problem

Plumber Code

function(req) {
    tempFolder <- 'temp/'
    
    uuid <- UUIDgenerate()
    remotePath <- paste0(tempFolder, uuid)
    
    # upload data file
    tmpFile <- tempfile()

    #! this step won't work when calling from C# as req$body$file does not exist
    writeBin(req$body$file$parsed, tmpFile)
    
    return(uuid)
}

Describe the problem in detail

C# client-side code
This does not work

// Create an HttpClient instance
using var httpClient = new HttpClient(new ClientHandler());

// Create a multipart form data content
// Setting the content type manually does not work, I've tried that
var content = new MultipartFormDataContent();

// Read the file content as a byte array -> dataPath is defined further up and points to an excel file
var fileContent = File.ReadAllBytes(dataPath);

// Add the file content as a ByteArrayContent to the multipart form data
content.Add(new ByteArrayContent(fileContent), "file.xlsx", "file.xlsx");

// Make the POST request
var response = await httpClient.PostAsync(new Uri($"{autosumApi}/send"), content);

// Read and print the response
var responseText = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseText.First());

The response I get is 500 /w ["Error in writeBin(req$body$file$parsed, tmpFile): can only write vector objects\n"]

C# client-side request

Request:
Method: POST, RequestUri: 'http://127.0.0.1:6285/', Version: 1.1, Content: System.Net.Http.MultipartFormDataContent, Headers:
{
  Content-Type: multipart/form-data
}

Python client-side code
This works

import requests
response = requests.post(
    url = plumberAPIUrl + 'send',
    files = {'file': open(filePath, 'rb')})

If I return the request, I get a UUID back, as expected.

Python client-side request

b'POST /send HTTP/1.1\r
Host: 127.0.0.1:6285\r
User-Agent: python-requests/2.22.0\r
Accept-Encoding: gzip, deflate\r
Accept: */*\r\nConnection: keep-alive\r
Content-Length: 21020\r
Content-Type: multipart/form-data; boundary=3047d955cd6dabff7ef7a80b86abbb45'
@slodge
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slodge commented Sep 11, 2023

I think (but haven't tested) that you need to change your C# code to

content.Add(new ByteArrayContent(fileContent), "file", "file.xlsx");

See https://learn.microsoft.com/en-us/dotnet/api/system.net.http.multipartformdatacontent.add?view=net-7.0#system-net-http-multipartformdatacontent-add(system-net-http-httpcontent-system-string-system-string) - the second parameter is the name of the form variable

PS Sorry for slow response... I'm hoping Posit can put some <3 into Plumber again one day soon... // cc @schloerke @jcheng5

@slodge
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slodge commented Nov 10, 2023

I've been trying to get the same situation working today...

And ended up digging inside plumber and webutils as I couldn't get it to work.

Eventually I worked out that there's a problem with plumber's multipart parsing if the boundary marker is quoted - i.e. if it's presented in the content type headers like: multipart/form-data; boundary="custom_boundary_123" rather than multipart/form-data; boundary=custom_boundary_123

I've fixed this in my plumber fork - slodge@f0e37b8 - which is in #905 - but I don't have any timeline on if/when that might get merged.

@meztez meztez mentioned this issue Nov 17, 2023
Merged
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Add support for quoted boundary for multipart request parsing. meztez/plumber
2 participants
@slodge @MJSchut