To override the Content-type in your clients, use the HTTP Accept Header, append the .xml suffix or ?format=xml
HTTP + XML
The following are sample HTTP requests and responses.
The placeholders shown need to be replaced with actual values.
POST /xml/reply/HelloAllTypes HTTP/1.1
Host: blazor-gallery.servicestack.net
Accept: application/xml
Content-Type: application/xml
Content-Length: length
<HelloAllTypes xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/MyApp.ServiceModel">
<AllCollectionTypes>
<IntArray xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:int>0</d3p1:int>
</IntArray>
<IntList xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:int>0</d3p1:int>
</IntList>
<NullableByteArray xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:unsignedByte>0</d3p1:unsignedByte>
</NullableByteArray>
<NullableByteList xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:unsignedByte>0</d3p1:unsignedByte>
</NullableByteList>
<NullableDateTimeArray xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:dateTime>0001-01-01T00:00:00</d3p1:dateTime>
</NullableDateTimeArray>
<NullableDateTimeList xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:dateTime>0001-01-01T00:00:00</d3p1:dateTime>
</NullableDateTimeList>
<PocoArray>
<Poco>
<Name>String</Name>
</Poco>
</PocoArray>
<PocoList>
<Poco>
<Name>String</Name>
</Poco>
</PocoList>
<PocoLookup xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:KeyValueOfstringArrayOfPocoB8fmgb81>
<d3p1:Key>String</d3p1:Key>
<d3p1:Value>
<Poco>
<Name>String</Name>
</Poco>
</d3p1:Value>
</d3p1:KeyValueOfstringArrayOfPocoB8fmgb81>
</PocoLookup>
<PocoLookupMap xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:KeyValueOfstringArrayOfArrayOfKeyValueOfstringPocoB8fmgb81ty7Ep6D1>
<d3p1:Key>String</d3p1:Key>
<d3p1:Value>
<d3p1:ArrayOfKeyValueOfstringPocoB8fmgb81>
<d3p1:KeyValueOfstringPocoB8fmgb81>
<d3p1:Key>String</d3p1:Key>
<d3p1:Value>
<Name>String</Name>
</d3p1:Value>
</d3p1:KeyValueOfstringPocoB8fmgb81>
</d3p1:ArrayOfKeyValueOfstringPocoB8fmgb81>
</d3p1:Value>
</d3p1:KeyValueOfstringArrayOfArrayOfKeyValueOfstringPocoB8fmgb81ty7Ep6D1>
</PocoLookupMap>
<StringArray xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:string>String</d3p1:string>
</StringArray>
<StringList xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:string>String</d3p1:string>
</StringList>
</AllCollectionTypes>
<AllTypes>
<Byte>0</Byte>
<Char>0</Char>
<DateTime>0001-01-01T00:00:00</DateTime>
<DateTimeOffset xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:DateTime>0001-01-01T00:00:00Z</d3p1:DateTime>
<d3p1:OffsetMinutes>0</d3p1:OffsetMinutes>
</DateTimeOffset>
<Decimal>0</Decimal>
<Double>0</Double>
<Float>0</Float>
<Guid>00000000-0000-0000-0000-000000000000</Guid>
<Id>0</Id>
<Int>0</Int>
<IntStringMap xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:KeyValueOfintstring>
<d3p1:Key>0</d3p1:Key>
<d3p1:Value>String</d3p1:Value>
</d3p1:KeyValueOfintstring>
</IntStringMap>
<KeyValuePair xmlns:d3p1="http://schemas.datacontract.org/2004/07/System.Collections.Generic">
<d3p1:key>String</d3p1:key>
<d3p1:value>String</d3p1:value>
</KeyValuePair>
<Long>0</Long>
<NullableDateTime>0001-01-01T00:00:00</NullableDateTime>
<NullableId>0</NullableId>
<NullableTimeSpan>PT0S</NullableTimeSpan>
<OriginalName>String</OriginalName>
<Point>
<X>0</X>
<Y>0</Y>
</Point>
<Short>0</Short>
<String>String</String>
<StringArray xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:string>String</d3p1:string>
</StringArray>
<StringList xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:string>String</d3p1:string>
</StringList>
<StringMap xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:KeyValueOfstringstring>
<d3p1:Key>String</d3p1:Key>
<d3p1:Value>String</d3p1:Value>
</d3p1:KeyValueOfstringstring>
</StringMap>
<SubType>
<Id>0</Id>
<Name>String</Name>
</SubType>
<TimeSpan>PT0S</TimeSpan>
<UInt>0</UInt>
<ULong>0</ULong>
<UShort>0</UShort>
</AllTypes>
<Name>String</Name>
</HelloAllTypes>
HTTP/1.1 200 OK
Content-Type: application/xml
Content-Length: length
<HelloAllTypesResponse xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/MyApp.ServiceModel">
<AllCollectionTypes>
<IntArray xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:int>0</d3p1:int>
</IntArray>
<IntList xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:int>0</d3p1:int>
</IntList>
<NullableByteArray xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:unsignedByte>0</d3p1:unsignedByte>
</NullableByteArray>
<NullableByteList xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:unsignedByte>0</d3p1:unsignedByte>
</NullableByteList>
<NullableDateTimeArray xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:dateTime>0001-01-01T00:00:00</d3p1:dateTime>
</NullableDateTimeArray>
<NullableDateTimeList xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:dateTime>0001-01-01T00:00:00</d3p1:dateTime>
</NullableDateTimeList>
<PocoArray>
<Poco>
<Name>String</Name>
</Poco>
</PocoArray>
<PocoList>
<Poco>
<Name>String</Name>
</Poco>
</PocoList>
<PocoLookup xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:KeyValueOfstringArrayOfPocoB8fmgb81>
<d3p1:Key>String</d3p1:Key>
<d3p1:Value>
<Poco>
<Name>String</Name>
</Poco>
</d3p1:Value>
</d3p1:KeyValueOfstringArrayOfPocoB8fmgb81>
</PocoLookup>
<PocoLookupMap xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:KeyValueOfstringArrayOfArrayOfKeyValueOfstringPocoB8fmgb81ty7Ep6D1>
<d3p1:Key>String</d3p1:Key>
<d3p1:Value>
<d3p1:ArrayOfKeyValueOfstringPocoB8fmgb81>
<d3p1:KeyValueOfstringPocoB8fmgb81>
<d3p1:Key>String</d3p1:Key>
<d3p1:Value>
<Name>String</Name>
</d3p1:Value>
</d3p1:KeyValueOfstringPocoB8fmgb81>
</d3p1:ArrayOfKeyValueOfstringPocoB8fmgb81>
</d3p1:Value>
</d3p1:KeyValueOfstringArrayOfArrayOfKeyValueOfstringPocoB8fmgb81ty7Ep6D1>
</PocoLookupMap>
<StringArray xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:string>String</d3p1:string>
</StringArray>
<StringList xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:string>String</d3p1:string>
</StringList>
</AllCollectionTypes>
<AllTypes>
<Byte>0</Byte>
<Char>0</Char>
<DateTime>0001-01-01T00:00:00</DateTime>
<DateTimeOffset xmlns:d3p1="http://schemas.datacontract.org/2004/07/System">
<d3p1:DateTime>0001-01-01T00:00:00Z</d3p1:DateTime>
<d3p1:OffsetMinutes>0</d3p1:OffsetMinutes>
</DateTimeOffset>
<Decimal>0</Decimal>
<Double>0</Double>
<Float>0</Float>
<Guid>00000000-0000-0000-0000-000000000000</Guid>
<Id>0</Id>
<Int>0</Int>
<IntStringMap xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:KeyValueOfintstring>
<d3p1:Key>0</d3p1:Key>
<d3p1:Value>String</d3p1:Value>
</d3p1:KeyValueOfintstring>
</IntStringMap>
<KeyValuePair xmlns:d3p1="http://schemas.datacontract.org/2004/07/System.Collections.Generic">
<d3p1:key>String</d3p1:key>
<d3p1:value>String</d3p1:value>
</KeyValuePair>
<Long>0</Long>
<NullableDateTime>0001-01-01T00:00:00</NullableDateTime>
<NullableId>0</NullableId>
<NullableTimeSpan>PT0S</NullableTimeSpan>
<OriginalName>String</OriginalName>
<Point>
<X>0</X>
<Y>0</Y>
</Point>
<Short>0</Short>
<String>String</String>
<StringArray xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:string>String</d3p1:string>
</StringArray>
<StringList xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:string>String</d3p1:string>
</StringList>
<StringMap xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<d3p1:KeyValueOfstringstring>
<d3p1:Key>String</d3p1:Key>
<d3p1:Value>String</d3p1:Value>
</d3p1:KeyValueOfstringstring>
</StringMap>
<SubType>
<Id>0</Id>
<Name>String</Name>
</SubType>
<TimeSpan>PT0S</TimeSpan>
<UInt>0</UInt>
<ULong>0</ULong>
<UShort>0</UShort>
</AllTypes>
<Result>String</Result>
</HelloAllTypesResponse>