REST Service call via POSTMAN

Question

Hi Team,

I have a very basic question. I want to get response of below call via POSTMAN -

streamchain: getinfo
{"method":"getinfo","params":[],"id":1,"chain_name":"streamchain"}

 My config file is as below -

rpcuser=multichainrpc
rpcpassword=XXXXXXXX
rpcallowip=0.0.0.0/0
rpchost=127.0.0.1

Blockchain parameters is as below -

•   "default-network-port" : 6271
•   "default-rpc-port" : 6270
•    "nodeaddress" : "streamchain@X.Y.Z.A:6271

In POSTMAN -

Authorization Section: Type ->"Basic Auth" Username -> multichainrpc Password ->rpcpassword

Header Section: Content-Type -> Application/JSON

Body Section: Selected "raw" type & added this: {"method":"getinfo","params":[],"id":1,"chain_name":"streamchain"}

Call Type : POST

URL: http://X.Y.Z.A:6271/

I am not receiving any response although my cli is working fine.

Please let me know if I am making any mistake.

 

 

 

 

Answer 1

I'm not sure sure how Postman works but at the very least, you need to use the default RPC port for API requests, not the default network port.

Comments

Thanks I am able to successfully receive response. URL should be the Localhost address where multichain is installed & as mentioned port is the RPC port.

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Great, glad to hear you got it resolved.

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Hi, I got the same problem, but I stopped on "Error: connect ECONNREFUSED". Any clues? Thank you!

Here are the details from postman console:

POST http://X.X.X.X:7404/
Error: connect ECONNREFUSED X.X.X.X:7404
Network
Request Headers
Content-Length: application/json
Authorization: Basic bX...
Content-Type: text/plain
User-Agent: PostmanRuntime/7.29.0
Accept: */*
Cache-Control: no-cache
Postman-Token: dd...
Host: X.X.X.X:7404
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
Request Body
{"method":"getinfo","params":[],"id":1,"chain_name":"mychain"}

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By default the node only accepts JSON-RPC requests from its own localhost. You can change this using a runtime parameter, please search this Q&A for the word 'rpcallowip'.