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	protect code against value not in accurate range
add unit test
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		@@ -18,8 +18,11 @@
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        {
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            var useTracing = _tracer != null && options.UseTracing;
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            //be sure that maxConnectionPerServer is in correct range of values
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            int maxConnectionPerServer = (options.MaxConnectionsPerServer > 0) ? maxConnectionPerServer = options.MaxConnectionsPerServer : maxConnectionPerServer = int.MaxValue;
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            return new HttpHandlerOptions(options.AllowAutoRedirect,
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                options.UseCookieContainer, useTracing, options.UseProxy, options.MaxConnectionsPerServer);
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                options.UseCookieContainer, useTracing, options.UseProxy, maxConnectionPerServer);
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        }
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    }
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}
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@@ -137,6 +137,44 @@ namespace Ocelot.UnitTests.Configuration
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                .BDDfy();
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        }
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        [Fact]
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        public void should_create_options_with_specified_MaxConnectionsPerServer()
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        {
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            var fileReRoute = new FileReRoute
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            {
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                HttpHandlerOptions = new FileHttpHandlerOptions
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                {
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                    MaxConnectionsPerServer = 10
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                }
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            };
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            var expectedOptions = new HttpHandlerOptions(false, false, false, true, 10);
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            this.Given(x => GivenTheFollowing(fileReRoute))
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                .When(x => WhenICreateHttpHandlerOptions())
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                .Then(x => ThenTheFollowingOptionsReturned(expectedOptions))
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                .BDDfy();
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        }
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        [Fact]
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        public void should_create_options_fixing_specified_MaxConnectionsPerServer_range()
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        {
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            var fileReRoute = new FileReRoute
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            {
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                HttpHandlerOptions = new FileHttpHandlerOptions
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                {
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                    MaxConnectionsPerServer = -1
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                }
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            };
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            var expectedOptions = new HttpHandlerOptions(false, false, false, true, int.MaxValue);
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            this.Given(x => GivenTheFollowing(fileReRoute))
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                .When(x => WhenICreateHttpHandlerOptions())
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                .Then(x => ThenTheFollowingOptionsReturned(expectedOptions))
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                .BDDfy();
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        }
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        private void GivenTheFollowing(FileReRoute fileReRoute)
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        {
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            _fileReRoute = fileReRoute;
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@@ -154,6 +192,7 @@ namespace Ocelot.UnitTests.Configuration
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            _httpHandlerOptions.UseCookieContainer.ShouldBe(expected.UseCookieContainer);
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            _httpHandlerOptions.UseTracing.ShouldBe(expected.UseTracing);
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            _httpHandlerOptions.UseProxy.ShouldBe(expected.UseProxy);
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            _httpHandlerOptions.MaxConnectionsPerServer.ShouldBe(expected.MaxConnectionsPerServer);
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        }
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        private void GivenARealTracer()
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