如何发送离线HTTP发布请求

问题描述

我如何发送链下http发帖请求并获取哈希?

fn fetch(verify: T::Hash,number: Vec<u8>) -> Result<Vec<u8>,&'static str> {
        let http_remote: &str = "http://localhost:3000/endpoint";
        let pending = rt_offchain::http::Request::post(http_remote,verify)
            .send()
            .map_err(|_| "Error in sending http post request")?;

        let response = pending.wait()
            .map_err(|_| "Error in waiting http response back")?;
        if response.code != 200 {
            debug::warn!("Unexpected status code: {}",response.code);
            return Err("Non-200 status code returned from http request");
        }
        Ok(response.body().collect::<Vec<u8>>())
    }

解决方法

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