runtime: System.Net.Http.CurlException HttpClient PostAsync

Environment

DISTRIB_ID=Ubuntu DISTRIB_RELEASE=16.04 DISTRIB_CODENAME=xenial DISTRIB_DESCRIPTION=“Ubuntu 16.04 LTS”

Curl version

curl 7.47.0 (x86_64-pc-linux-gnu) libcurl/7.47.0 GnuTLS/3.4.10 zlib/1.2.8 libidn/1.32 librtmp/2.3 Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp smb smbs smtp smtps telnet tftp Features: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz TLS-SRP UnixSockets

Code

var client = new HttpClient() {
    BaseAddress = new Uri("http://example.com/")
};

var formContent = new FormUrlEncodedContent(new[]
{
    new KeyValuePair<string, string>("key", "val")
});  

var response = await client.PostAsync("/some.php", formContent, CancellationToken.None);

Target

dotnet 1.0.0-preview1-002702 “System.Net.Http”: “4.0.1-rc2-24027”

Exception

Unhandled Exception: System.AggregateException: One or more errors occurred. (An error occurred while sending the request.) —> System.Net.Http.HttpRequestException: An error occurred while sending the request. —> System.Net.Http.CurlException: Failure when receiving data from the peer at System.Net.Http.CurlHandler.ThrowIfCURLEError(CURLcode error) at System.Net.Http.CurlHandler.MultiAgent.FinishRequest(EasyRequest completedOperation, CURLcode messageResult)

Run Curl directly is working

curl -c cookies.txt -b cookies.txt -X POST --form "key=val" http://example.com/some.php -L

Can’t get it working with dotnet, everything else just fine, except when I post FormUrlEncodedContent. I tried different setup with HttpClientHandler, same exception.

Update!

Running with 1.0.0-preview2-003119 works fine.