I am trying to get some data in json format in using RCurl.
I have to use POST to enter the username and password such as:
postForm(url1, user=x$USERNAME, pass=x$PASSWORD)
I get the following error:
Error in function (type, msg, asError = TRUE) :
SSL read: error:00000000:lib(0):func(0):reason(0), errno 54
If I researched the correct error number 54 from the libcurl site:
CURLE_SSL_ENGINE_SETFAILED (54)
Failed setting the selected SSL crypto engine as default!
If this is the correct error how would I select the SSL engine?
Sorry, but the conclusion about this error is wrong. The output you see is from lib/ssluse.c in libcurl's source code and the "errno" mentioned there is not the libcurl error code but the actual errno variable at that time. I'm not sure what help we can get by knowing it, but 54 in my system equals EXFULL.
You should rather check the return code from the libcurl function that fails to get the proper libcurl error code but I guess you might see CURLE_RECV_ERROR simply because libcurl got tis SSL problem when receiving data.
Unfortunately that error string from openssl is not very helpful and I can't tell why you got it!
Related
My attempt to exclude the check for the EOL char on my Windows machine always results in this error message:
>vendor\bin\phpcs.bat --standard=PSR2 --exclude=Generic.Files.LineEndings.InvalidEOLChar src\version.php
ERROR: The specified sniff code "Generic.Files.LineEndings.InvalidEOLChar" is invalid
Run "phpcs --help" for usage information
Can't figure out what I'm doing wrong. I have installed PHP CodeSniffer via composer and am running version 3.4.0.
The --exclude CLI argument accepts 3-part sniffs codes, but you've passed in a 4-part error code.
In your case, the sniff code is Generic.Files.LineEndings and that sniff only generates a single error code, so you'll be fine ignoring the entire sniff:
vendor\bin\phpcs.bat --standard=PSR2 --exclude=Generic.Files.LineEndings src\version.php
If you want to exclude individual error codes, or if you just want to lock down a standard for your project, you'll need to use a ruleset.xml file: https://github.com/squizlabs/PHP_CodeSniffer/wiki/Annotated-Ruleset
I'm trying to suppress a warning in R.
suppressWarnings(httr::GET("localhost:8080/does_not_exist"))
returns an error message
Error in curl::curl_fetch_memory(url, handle = handle) :
Failed to connect to localhost port 8080: Connection refused
I have also tried
suppressMessages(httr::GET("localhost:8080/does_not_exist"))
invisible(capture.output(httr::GET("localhost:8080/does_not_exist")))
but I still get the same error message.
I think you are trying to suppress an error rather than a warning in here. If you really don't want to see an error, you could wrap your function into try() and set the silent argument to TRUE. Something like this:
try("a" + 1, silent = T) #returns nothing
However, generally speaking I would advice not to do something like this, because error messages are useful rather than redundant.
I'm trying to get data from an OPeNDAP server using R and the ncdf4 package. However, the nasa eosdis server requires username / password. How can I pass this info using R?
Here is what I'm trying to do:
require(ncdf4)
f1 <- nc_open('https://disc2.gesdisc.eosdis.nasa.gov/opendap/TRMM_L3/TRMM_3B42.7/2018/020/3B42.20180120.15.7.HDF')
And the error message:
Error in Rsx_nc4_get_vara_double: NetCDF: Authorization failure syntax
error, unexpected WORD_WORD, expecting SCAN_ATTR or SCAN_DATASET or
SCAN_ERROR context: HTTP^ Basic: Access denied. Var: nlat Ndims: 1
Start: 0 Count: 400 Error in ncvar_get_inner(d$dimvarid$group_id,
d$dimvarid$id, default_missval_ncdf4(), : C function
R_nc4_get_vara_double returned error
I tried the url https://username:password#disc2.... but that did not work also.
Daniel,
The service you are accessing is using third-party redirection to authenticate users. Therefore the simple way of providing credentials in the URL doesn't work.
You need to create 2 files.
A .dodsrc file (a RC file for the netcdf-c library) with the following content
HTTP.COOKIEFILE=.cookies
HTTP.NETRC=.netrc
A .netrc file, in the location referenced in the .dodsrc, with your credentials:
machine urs.earthdata.nasa.gov
login YOURUSERNAMEHERE
password YOURPASWORDHERE
You can find more details at
https://www.unidata.ucar.edu/software/netcdf/docs/md__Users_wfisher_Desktop_v4_86_81-prep_netcdf-c_docs_auth.html
Regards
Antonio
unfortunately, even after defining the credentials and their location
ncdf4::nc_open("https://gpm1.gesdisc.eosdis.nasa.gov/opendap/GPM_L3/GPM_3IMERGDE.06/2020/08/3B-DAY-E.MS.MRG.3IMERG.20200814-S000000-E235959.V06.nc4")
still returns
Error in Rsx_nc4_get_vara_double: NetCDF: Authorization failure
The same happens when using ncdump from a terminal:
$ ncdump https://gpm1.gesdisc.eosdis.nasa.gov/opendap/GPM_L3/GPM_3IMERGDE.06/2020/08/3B-DAY-E.MS.MRG.3IMERG.20200814-S000000-E235959.V06.nc4
returns
syntax error, unexpected WORD_WORD, expecting SCAN_ATTR or SCAN_DATASET or
SCAN_ERROR context: HTTP^ Basic: Access denied. NetCDF: Authorization
failure Location: file
/build/netcdf-KQb2aQ/netcdf-4.6.0/ncdump/vardata.c; line 473
I am new to use a package, gtrendsR, running in R 3.4.1, windows 10.
I succeeded in gconnect, but i get the following error message for any types of query passing to gtrends like below.
library(gtrendsR)
gconnect(usr=my_user_name,psw=my_password)
google.trends = gtrends(c("NHL"), geo="US",start_date="2017-01-01")
Error: Not enough search volume. Please change your search terms.
In addition: Warning message:
In request_GET(x, url, ...) : Gone (HTTP 410).
Anybody has some ideas to solve the problems?
Aim
I am trying to write a statement to connect to a sharepoint online list to retrieve the data for use in R.
Background
This is my first time using RCurl/curl/libcurl and I've attempted to read the documentation but it's beyond me and doesn't have any relevant examples.
Using
a<-getURL("https://example.sharepoint.com/_vti_bin/listdata.svc/Glossary")
Resulted in an error
Error in function (type, msg, asError = TRUE) :
Unknown SSL protocol error in connection to example.sharepoint.com:443
A combination of google and deciphering of cryptic libcurl documentation identified that the issue was due to the SSL type. I used curl in shell to verify and I got a positive response from the sharepoint server as a result (well, except the need to add the user name and password)
curl https://example.sharepoint.com/_vti_bin/listdata.svc/Glossary -v -SSLv3
Problem
I cannot work out how to include the -SSLv3 argument in my getURL() function after RTFMs
Requested solution
Amend this statement to utilise SSLv3
a<-getURL("https://example.sharepoint.com/_vti_bin/listdata.svc/Glossary")
For me this works:
a<-getURL("https://example.sharepoint.com/_vti_bin/listdata.svc/Glossary", ssl.verifypeer=TRUE, sslversion=4L)