尝试从 Twitter API 流式传输时出错

Question

我正在尝试使用 StreamR 和本指南https://github.com/pablobarbera/streamR从 Twitter 流式传输数据

它最近有效，但现在当我尝试流式传输任何数据时出现此错误；

library(ROAuth)
library(streamR)

my_oauth <- list(consumer_key = "...",
   consumer_secret = "...",
   access_token="...",
   access_token_secret = "...")

getUsers(screen_names="LSEnews", oauth = my_oauth)

#Error in function (type, msg, asError = TRUE)  : 
  #Unknown SSL protocol error in connection to api.twitter.com:443

When I try to stream tweets the connection closes after 0 second

filterStream(file.name="trump-tweets.json", track="trump", timeout=120, oauth=my_oauth)
#Capturing tweets...
#Connection to Twitter stream was closed after 0 seconds with up to 0 tweets #downloaded.

我在 Twitter 开发者网站上重新生成了我的客户密钥和访问令牌，还创建了一个新应用程序。我还尝试更新 ROAuth 和 streamR -package。但是，当我尝试从 github 更新 streamR 时，我得到了这个错误（我之前已经安装了包没有任何问题）；

library(devtools)

#Loading required package: usethis
devtools::install_github("pablobarbera/streamR/streamR")

#Error in rethrow_call(c_processx_exec, command, c(command, args), stdin,  : 
#  Incorrect number of arguments (16), expecting 14 for 'processx_exec'

这导致我得到这个答案，我可能需要更新 processx 包

https://github.com/r-lib/devtools/issues/2077

我已经更新了

install.packages("processx")

但这并没有解决问题，当我尝试从 Github 更新 StreamR 包时，我仍然遇到同样的错误。我也尝试通过 CRAN 安装 streamR-package；

install.packages("streamR")
install.packages("ROAuth")

但它并没有解决我关于流式推文的主要问题。

感谢任何帮助，谢谢！

Answer 1

我能够按照下面的说明成功运行代码（证明这确实是您的设置问题，并且 API 或包本身没有任何变化）。

几个注意事项：

• 我安装的是github版本的streamR
• 请注意，我无法运行函数getUsers；我怀疑该功能来自 CRAN 版本
• 我已经包含了sessionInfo() 的输出；也许如果您确保您拥有与我相同的包版本和 R 版本，您将能够成功运行，或者至少引导您前进

library(streamR)
#> Loading required package: RCurl
#> Loading required package: bitops
#> Loading required package: rjson
#> Loading required package: ndjson

my_oauth <- list(consumer_key = "MY_CONSUMER_KEY_HERE",
                 consumer_secret = "MY_CONSUMER_SECRET_HERE",
                 access_token="MY_ACCESS_TOKEN_HERE",
                 access_token_secret = "MY_ACCESS_SECRET_HERE")

filterStream("tweets.json", track = c("Obama", "Biden"), timeout = 120, 
             oauth = my_oauth)
#> Capturing tweets...
#> Connection to Twitter stream was closed after 120 seconds with up to 1146 tweets downloaded.

getUsers(screen_names="LSEnews", oauth = my_oauth) #not a function I see
#> Error in getUsers(screen_names = "LSEnews", oauth = my_oauth): could not find function "getUsers"

# List all functions in this package
ls("package:streamR")
#> [1] "createOAuthToken" "filterStream"     "parseTweets"     
#> [4] "readTweets"       "sampleStream"     "userStream"

filterStream(file.name="trump-tweets.json", track="trump", timeout=120, oauth=my_oauth)
#> Capturing tweets...
#> Connection to Twitter stream was closed after 120 seconds with up to 5187 tweets downloaded.

sessionInfo()
#> R version 3.6.1 (2019-07-05)
#> Platform: x86_64-apple-darwin15.6.0 (64-bit)
#> Running under: macOS Catalina 10.15
#> 
#> Matrix products: default
#> BLAS:   /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRblas.0.dylib
#> LAPACK: /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRlapack.dylib
#> 
#> locale:
#> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
#> 
#> attached base packages:
#> [1] stats     graphics  grDevices utils     datasets  methods   base     
#> 
#> other attached packages:
#> [1] streamR_0.4.5   ndjson_0.7.0    rjson_0.2.20    RCurl_1.95-4.12
#> [5] bitops_1.0-6   
#> 
#> loaded via a namespace (and not attached):
#>  [1] Rcpp_1.0.2        knitr_1.25        magrittr_1.5     
#>  [4] tidyselect_0.2.5  R6_2.4.0          rlang_0.4.0      
#>  [7] ROAuth_0.9.6      stringr_1.4.0     highr_0.8        
#> [10] dplyr_0.8.3       tools_3.6.1       data.table_1.12.2
#> [13] xfun_0.9          htmltools_0.3.6   yaml_2.2.0       
#> [16] digest_0.6.21     assertthat_0.2.1  tibble_2.1.3     
#> [19] crayon_1.3.4      dtplyr_0.0.3      purrr_0.3.2      
#> [22] glue_1.3.1        evaluate_0.14     rmarkdown_1.15   
#> [25] stringi_1.4.3     compiler_3.6.1    pillar_1.4.2     
#> [28] pkgconfig_2.0.3

^{由reprex package (v0.3.0) 于 2019 年 10 月 1 日创建}