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Problem (Conn close because of error End of file reached) with Bulk Activities API, Ruby

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Problem (Conn close because of error End of file reached) with Bulk Activities API, Ruby

I am not having sucess uploading a simple list of emails to the addcontacts url.


No other fields other than email and newline, three rcords.


I used ruby's net-http with Nick Siegers multipart enhancements so I could capture the exact exchange (below).  The actual api_key I used was changed for posting, but otherwise this is my log, verbatim:


opening connection to
<- "POST /v2/activities/addcontacts?api_key=6oi8ku893d84my8gsfnr7m66 HTTP/1.1\r\nAccept: */*\r\nUser-Agent: Ruby\r\nContent-Type: multipart/form-data; boundary=-----------RubyMultipartPost\r\nContent-Length: 469\r\nAuthorization: Bearer <REMOVED FOR SECURITY>\r\nHost:\r\n\r\n"
<- "-------------RubyMultipartPost\r\nContent-Disposition: form-data; name=\"lists\"\r\n\r\n1433771127\r\n-------------RubyMultipartPost\r\nContent-Disposition: form-data; name=\"file_name\"\r\n\r\ncc_upload.csv\r\n-------------RubyMultipartPost\r\nContent-Disposition: form-data; name=\"data\"; filename=\"cc_upload.csv\"\r\nContent-Length: 56\r\nContent-Type: text/csv\r\nContent-Transfer-Encoding: binary\r\n\r\ \ \ \n\r\n-------------RubyMultipartPost--\r\n\r\n"
Conn close because of error End of file reached



require 'net/http/post/multipart'

url = URI.parse('')"cc_upload.csv") do |csv|
  req ="#{url.path}?#{url.query}",
    'lists' => [1433771127],
    'file_name' => 'cc_upload.csv',
    'data' =>, "text/csv", "cc_upload.csv"))
  req.add_field('Authorization', 'Bearer <REMOVED FOR SECURITY>')
  http_obj =, url.port)
  http_obj.set_debug_output $stdout
  http_obj.use_ssl = true
  res = http_obj.start do |http|
  puts res.body


Any thoughts?


Re: Problem (Conn close because of error End of file reached) with Bulk Activities API, Ruby

I redacted your OAuth token from your post.  I would recommend revoking the token and generating a new one as anyone who copied that token down now has access to your account.  If you would like to do so, please email with your information and we will revoke the token for you.

Dave Berard
Senior Product Manager, Constant Contact
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