版权声明:分享得以延续,交流方知彼此。作者:陈鲁勇 https://blog.csdn.net/CSND_Ayo/article/details/81283596
我在调用 RPC
接口时发生的一个小插曲
POSTMAN
中调试接口可行,但移到python脚本中却发现异常行为。
经过抓包工具观察到异常原因
抓包结果 1 (期望结果)
对应
TCP
请求原文如下POST http://192.168.41.131:8090/rpc HTTP/1.1 Accept-Encoding: identity Content-Type: application/x-www-form-urlencoded Content-Length: 67 Host: 192.168.41.131:8090 User-Agent: Python-urllib/3.6 Connection: close {"jsonrpc": "2.0", "method": "get_block", "params": ["1"], "id": 1}
抓包结果 2
对应
TCP
请求原文如下POST http://127.0.0.1:8090/rpc HTTP/1.1 Accept-Encoding: identity Content-Type: application/x-www-form-urlencoded Content-Length: 48 Host: 127.0.0.1:8090 User-Agent: Python-urllib/3.6 Connection: close jsonrpc=2.0&method=get_block¶ms=%5B1%5D&id=1
本次期望的结果Python
如下
对应效果的脚本应当如下
import urllib.request
# 词典
temp_dict = {
"jsonrpc": "2.0",
"method": "get_block",
"params": [1],
"id": 1
}
# dict convert string
json_info = json.dumps(temp_dict)
# string convert bytes
data = bytes(json_info, 'utf8')
# build request
req = urllib.request.Request("http://192.168.41.131:8090/rpc",data=data)
# open request
ret = urllib.request.urlopen(req)
# print result
print(ret.read().decode('utf-8'))
常见的 POST
请求 json
格式
params = urllib.parse.urlencode({
"jsonrpc": "2.0",
"method": "get_block",
"params": [1],
"id": 1
})
params = params.encode('ascii')
url = "http://127.0.0.1:8090/rpc"
urllib.request.urlopen(url,params)