Analysis of methods for c#httpwebrequest access to HTTPS error handling

The following small series for everyone to bring a C # HttpWebRequest Access HTTPS error handling method. Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little knitting.

C # HttpWebRequest encountered this error while accessing the HTTPS link, but if I open the grab bag tool, such as Filddler2, Post returns to normal

The message for the error message is:

The underlying connection has been closed: An error occurred while sending.

InnerException is:

Unexpected EOF or 0 bytes received from the transport stream.

Tried the online n method, the following is the solution:

Servicepointmanager.securityprotocol = SECURITYPROTOCOLTYPE.SSL3;

Make a list of the solutions you find online, and maybe you'll be able to solve your problem.

Here are the solutions found online:

1. Request. ProtocolVersion = Httpversion.version10;

2. Servicepointmanager.servercertificatevalidationcallback = new Remotecertificatevalidationcallback ( CheckValidationResult);

3.servicepointmanager.securityprotocol = Securityprotocoltype.tls;

4. Try a different useragent.

5. Add the following in App. Config:

<system.net>  <settings>