The HTTP client helper functions are used for error handling.

httpGetLastErrorCode

This function gets the last error code set.

int httpGetLastErrorCode()

Parameter	Description
Returns	The HTTP status code. It will be `-1` if no error occurred. Note that calling the `httpGetLastErrorCode()` function should only be done when the previous POST/GET request returned null.

httpGetLastErrorMessage

This function gets the last error message.

string httpGetLastErrorMessage()

Parameter	Description
Returns	The HTTP status message. It will be `null` if no error occurred. Note that calling the `httpGetLastErrorMessage()` function should only be done when the previous POST/GET request returned null.

This function gets the last response if the connection failed but the server sent useful data nonetheless.

string httpGetLastErrorResponse()

Parameter	Description
Returns	A document from the HTTP server. It will be an empty string if no error occurred. Note that calling the `httpGetLastErrorResponse()` function should only be done when the previous POST/GET request returned null.

This function retrieves the header from the last HTTP response.

map<string,string> httpGetLastResponseHeader()

Parameter	Description
Returns	A map containing the response header

Next:

19.3 HTTP Server Functions