Kestral is very slow when posting data

[cibinmathewjose]

Please get the sample source from https://github.com/cibinmathewjose/KestrelPostIssue.git
run the code and post {"Name":"test","Price":1} to http://{machine}:5000/api/products, it will take ~6 seconds.

if you post {"Price":1} to http://{machine}:5000/api/products it will work normally.

The put request endpoint is always slow with machine name url, regardless of the data posted.

Also if you use localhost instead of machine name in url, it will always works normal.
this is the same issue as #2229

[Tratcher]

That sounds suspiciously like firewall filters getting in the way. Kestrel has no control of things that happen below the Socket layer, and doesn't check the host name on requests.

[cibinmathewjose]

I don’t think so, My firewall is turned off. Also it doesn’t happen when there is no “Name” property in the JSON payload for post method

[Tratcher]

When in doubt, simplify. Remove MVC from your sample and read the request body stream as text.

app.Run(async context =>
{
var bytes = new byte[100];
var read = await context.Request.Body.ReadAsync(bytes, 0, bytes.Length);
Encoding.UTF8.GetString(bytes, 0, read);
// etc..
});

[cibinmathewjose]

that too have the same issue. I have modified the startup.cs as
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
app.Run(async context =>
{
var str = new StreamReader(context.Request.Body).ReadToEnd();
Console.Write(str);
});
}
Still it takes abnormal amount of time for all PUT request and POST with specific property (Name) in JSON payload

[cibinmathewjose]

I have tried it in my personal laptop and it is working fine, but all machines in our corporate network and my official laptop has this issue. let me check with our IT team.

[aspnet-hello]

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