Get the Server Certificate from a TLS Connection

See more Socket/SSL/TLS Examples

Demonstrates Socket.GetServerCert, which copies the certificate presented by the remote TLS server into a Cert object for inspection.

local chilkat = require("chilkat")

local socket = chilkat.Socket.new()

-- Connect to the server using TLS.
local bTls = true
local maxWaitMs = 5000
local success = socket:connect("example.com", 5000, bTls, maxWaitMs)
if not success then
    print(socket.last_error_text)
    return
end

-- Copy the certificate presented by the remote TLS server, then inspect it.  This can be used to
-- validate the server's identity.
local cert = chilkat.Cert.new()
success = socket:get_server_cert(cert)
if not success then
    print(socket.last_error_text)
    return
end

print("Server certificate subject: " .. cert.subject_cn)
print("Issued by: " .. cert.issuer_cn)