Hi Guys,

I am trying to do a POST request via hackney (1.14.3).

The curl query is as follow:

curl -v \
--cert /Users/nico/projects/pfx/cert.pem \
--key /Users/nico/projects/pfx/key.pem \
--pass PASSWORD \
--insecure \
--header "Content-type: application/soap+xml; charset=utf-8; action=\"http://www.portalfiscal.inf.br/nfe/wsdl/NFeDistribuicaoDFe\"" \
--header "Accept: application/soap+xml; charset=utf-8" \
--data "<?xml version=\"1.0\" encoding=\"UTF-8\"?>...</soap12:Envelope>" \
https://www1.nfe.fazenda.gov.br/NFeDistribuicaoDFe/NFeDistribuicaoDFe.asmx

which gives the following results:

* Trying 200.198.239.181...
* TCP_NODELAY set
* Connected to www1.nfe.fazenda.gov.br (200.198.239.181) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
* CAfile: /etc/ssl/cert.pem
CApath: none
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Client hello (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS change cipher, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-SHA384
* ALPN, server did not agree to a protocol
* Server certificate:
* subject: C=BR; O=ICP-Brasil; OU=Secretaria da Receita Federal do Brasil - RFB; OU=ARSERPRO; OU=RFB e-Servidor A1; CN=www1.nfe.fazenda.gov.br
* start date: Sep 19 16:49:12 2018 GMT
* expire date: Sep 19 16:49:12 2019 GMT
* issuer: C=BR; O=ICP-Brasil; OU=Secretaria da Receita Federal do Brasil - RFB; CN=Autoridade Certificadora do SERPRORFB SSL
* SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
> POST /NFeDistribuicaoDFe/NFeDistribuicaoDFe.asmx HTTP/1.1
> Host: www1.nfe.fazenda.gov.br
> User-Agent: curl/7.54.0
> Content-type: application/soap+xml; charset=utf-8; action="http://www.portalfiscal.inf.br/nfe/wsdl/NFeDistribuicaoDFe"
> Accept: application/soap+xml; charset=utf-8
> Content-Length: 790
> 
* upload completely sent off: 790 out of 790 bytes
* TLSv1.2 (IN), TLS handshake, Hello request (0):
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Request CERT (13):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Certificate (11):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS handshake, CERT verify (15):
* TLSv1.2 (OUT), TLS change cipher, Client hello (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS change cipher, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Finished (20):
< HTTP/1.1 200 OK
< Cache-Control: private, max-age=0
< Content-Type: application/soap+xml; charset=utf-8
< Server: Microsoft-IIS/8.5
< X-AspNet-Version: 4.0.30319
< X-Powered-By: ASP.NET
< Date: Thu, 13 Dec 2018 21:17:00 GMT
< Content-Length: 6380

now when i am trying to do the same with hackney in elixir (1.7.4), i am getting an {:error, :closed}:

url = "https://www1.nfe.fazenda.gov.br/NFeDistribuicaoDFe/NFeDistribuicaoDFe.asmx"
xml_soap = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>...</soap12:Envelope>"

headers = 
  [
    {"Content-type", "application/soap+xml; charset=utf-8; action=\"http://www.portalfiscal.inf.br/nfe/wsdl/NFeDistribuicaoDFe\""},
    {"Accept", "application/soap+xml; charset=utf-8"}
  ]

opts = [
  :insecure,
  recv_timeout: 30_000,
  ssl_options: [
    certfile: "/Users/nico/projects/pfx/cert.pem",
    keyfile: "/Users/nico/projects/pfx/key.pem",
    password: 'PASSWORD',
    versions: [:'tlsv1.2']
  ]
]

leading to:

iex(8)> :hackney.request(:post, url, headers, xml_soap, opts)
{:error, :closed}

I guess the issue must be in the SSL negotiation, but don’t know how to debug this…any idea?

thanks!