hertz client : send request

You can learn about using hertz client to send request：

• Do():Do() sends the request and writes the response to the resp. This function does not support redirect jumps, if you want to use it, please use DoRedirects or Get* methods.
• DoDeadline(): DoDeadline() sends the request and writes the response to the resp, and returns an error if there is no response after the given deadline. This method does not support redirect jumps, if you want to use it, please use DoRedirects or Get* methods.
• DoRedirects(): DoRedirects support redirect, when the number of redirects exceeds maxRedirectsCount will return error.
• DoTimeout(): DoTimeout() sends the request and writes the response to the resp. If there is no response after the given timeout, a timeout error is returned. This method does not support redirect jumps, if you want to use it, please use DoRedirects or Get* methods.
• Get(): Get() will return the corresponding status code and response body according to the url; dst will be replaced with the response request body, if dst is too small a new slice will be assigned. This method supports redirect.
• GetDeadline(): GetDeadline() will return the corresponding status code and response body according to the url; if no response after the given deadline will return a timeout error, dst will be replaced with the response request body, and if dst is too small a new slice will be assigned. This method supports redirect.
• GetTimeout(): GetTimeout() will return the corresponding status code and response body according to the url; if there is no response after a given timeout, it will return an error, dst will be replaced with the response request body, and if dst is too small a new slice will be assigned. This method supports redirect.
• Post(): Post() will send a post request based on the url and post parameters, dst will be replaced with a response request body, if dst is too small a new slice will be assigned. The method supports redirect jumps. And the content-type used is application/x-www-url-form