ClientFactory.cs

using System;

namespace ServiceStack
{
    public static class ClientFactory
    {
        public static IOneWayClient Create(string endpointUrl)
        {
            if (endpointUrl.IsNullOrEmpty() || !endpointUrl.StartsWith("http"))
                return null;

            if (endpointUrl.IndexOf("format=", StringComparison.Ordinal) == -1 || endpointUrl.IndexOf("format=json", StringComparison.Ordinal) >= 0)
                return new JsonServiceClient(endpointUrl);

            if (endpointUrl.IndexOf("format=jsv", StringComparison.Ordinal) >= 0)
                return new JsvServiceClient(endpointUrl);

            if (endpointUrl.IndexOf("format=xml", StringComparison.Ordinal) >= 0)
                return new XmlServiceClient(endpointUrl);

#if NET45
            if (endpointUrl.IndexOf("format=soap11", StringComparison.Ordinal) >= 0)
                return new Soap11ServiceClient(endpointUrl);

            if (endpointUrl.IndexOf("format=soap12", StringComparison.Ordinal) >= 0)
                return new Soap12ServiceClient(endpointUrl);
#endif

            throw new NotImplementedException("could not find service client for " + endpointUrl);
        }
    }
}