# HTTP client
##  HTTP client
### Description
The HTTP Client transform performs a simple call to a base URL with additional options.
http\://\?param1=value1\¶m2=value2\¶m3..
The result is stored in a String field with the specified name.
| Hop Engine | ✓ |
| ---------- | ------------ |
| Spark | ? |
| Flink | ? |
| Dataflow | ? |
### Options
| Option | Description |
| --------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
| Transform name | Name of the transform; this name has to be unique in a single pipeline |
| URL | The base URL string |
| Accept URL from field? | Enable this option if you want to get the URL from a previous transform. Enabling this will also allow you to specify the name of the input field. |
| URL field name | The name of the incoming field that contains the URL |
| Connection timeout | |
| Socket timeout | The number of seconds to wait if no data is returned from the server. |
| Connection close wait time | |
| Result fieldname | The name of the field to store results |
| HTTP status code field name | The name of the field to store the HTTP response code (e.g. 200, 404) |
| Response time (milliseconds) field name | The name of the field to store the response time |
| Http Login | The username to be passed during HTTP (Basic) authentication |
| HTTP Password | The password to be passed during HTTP (Basic) authentication |
| Proxy Host | The hostname of the Proxy Server to be used |
| Proxy Port | The port number of the Proxy Server to be used |
| Parameters | Area where you define the parameter name-value pairs to pass on the URL |
| Custom HTTP Headers | Area where you define optional HTTP headers |
### FAQ
#### The HTTP client transform doesn’t do anything
**Q**: The HTTP client transform doesn’t do anything, how do I make it work?
**A**: The HTTP client transform needs to be triggered. Use a Row generator transform generating e.g. 1 empty row and link that with a hop to the HTTP client transform.
#### The HTTP client transform and SOAP
**Q**: Does the HTTP client support SOAP?
**A**: No, it just calls an URL with arguments. Future transforms may provide SOAP functionality, Work is underway on a WebService transform supporting WSDL.
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