| Value | Description |
|---|
| application/x-www-form-urlencoded | Default. All characters are encoded before sent (spaces are converted to "+" symbols, and special characters are converted to ASCII HEX values) |
| multipart/form-data | No characters are encoded. This value is required when you are using forms that have a file upload control |
| text/plain | Spaces are converted to "+" symbols, but no special characters are encoded |