This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::AppMesh::GatewayRoute HttpGatewayRouteHeaderMatch
<a name="aws-properties-appmesh-gatewayroute-httpgatewayrouteheadermatch"></a>

An object that represents the method and value to match with the header value sent in a request. Specify one match method.

## Syntax
<a name="aws-properties-appmesh-gatewayroute-httpgatewayrouteheadermatch-syntax"></a>

To declare this entity in your Amazon CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-appmesh-gatewayroute-httpgatewayrouteheadermatch-syntax.json"></a>

```
{
  "[Exact](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-exact)" : {{String}},
  "[Prefix](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-prefix)" : {{String}},
  "[Range](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-range)" : {{GatewayRouteRangeMatch}},
  "[Regex](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-regex)" : {{String}},
  "[Suffix](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-suffix)" : {{String}}
}
```

### YAML
<a name="aws-properties-appmesh-gatewayroute-httpgatewayrouteheadermatch-syntax.yaml"></a>

```
  [Exact](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-exact): {{String}}
  [Prefix](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-prefix): {{String}}
  [Range](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-range): {{
    GatewayRouteRangeMatch}}
  [Regex](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-regex): {{String}}
  [Suffix](#cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-suffix): {{String}}
```

## Properties
<a name="aws-properties-appmesh-gatewayroute-httpgatewayrouteheadermatch-properties"></a>

`Exact`  <a name="cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-exact"></a>
The value sent by the client must match the specified value exactly.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `255`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Prefix`  <a name="cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-prefix"></a>
The value sent by the client must begin with the specified characters.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `255`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Range`  <a name="cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-range"></a>
An object that represents the range of values to match on.  
*Required*: No  
*Type*: [GatewayRouteRangeMatch](aws-properties-appmesh-gatewayroute-gatewayrouterangematch.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Regex`  <a name="cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-regex"></a>
The value sent by the client must include the specified characters.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `255`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Suffix`  <a name="cfn-appmesh-gatewayroute-httpgatewayrouteheadermatch-suffix"></a>
The value sent by the client must end with the specified characters.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `255`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)