GoLang

Without Router - Current Approach

package main

import (
	"bytes"
	"encoding/base64"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"time"
)

func main() {

	urlStr := "https://fip-1.dev.sahamati.org.in/v2/Accounts/discover"

	body := []byte(fmt.Sprintf(`{
        "ver": "2.0.0",
        "timestamp": "%s",
        "txnid": "f35761ac-4a18-11e8-96ff-0277a9fbfedc2",
        "Customer": {
            "id": "customer_identifier@AA_identifier",
            "Identifiers": [
                {
                    "category": "STRONG",
                    "type": "AADHAAR",
                    "value": "XXXXXXXXXXXXXXXX"
                }
            ]
        },
        "FITypes": [
            "DEPOSIT"
        ]
    }`, time.Now().UTC().Format(time.RFC3339)))

	client := &http.Client{
		Timeout: 30 * time.Second,
	}

	req, err := http.NewRequest("POST", urlStr, bytes.NewBuffer(body))
	if err != nil {
		fmt.Printf("Error creating request: %v\n", err)
		return
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("x-jws-signature", "eyJhbGciOiJSUzI1NiIsImtpZCI6IlRlZ1FhMms3MUlFWlotaEhxcm1ueWFFc3ZvSWloNWdrVUx2SjFfTEhibGsiLCJjcml0IjpbImI2NCJdLCJiNjQiOmZhbHNlfQ..Dux_bx7X-q1YSvyNmZiyPM60ZgaK3MshW...")
	req.Header.Set("x-simulate-res", "Ok")
	req.Header.Set("Authorization", "Bearer eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJsRlByWU4wR3dBQ3YyUzJFVFZyRkVvZVVlc2VzelppQ2xIaVY1M3hrU3JNIn0.eyJleHAiOjE3NDQ5NjgwNDAsImlhdCI6MTc0NDg4MTY0MCwianRpIjoiYzZiZTcyNDAtOWU5Ny00MzYwLTk3OGUtZWI5MTY0MWZiMmMwIiwiaXNzIjoiaHR0cHM6Ly9hcGkuZGV2LnNhaGFtYXRpLm9yZy5pbi9hdXRoL3JlYWxtcy9zYWhhbWF0aSIsInN1YiI6ImIyMzE1MTU3LWRmNzYtNGQzZS04ZjM2LWQ4NzZmY2ViOWFlZiIsInR5cCI6IkJlYXJlciIsImF6cCI6IkFBLVNJTVVMQVRPUiIsImFjciI6IjEiLCJzY29wZSI6ImVtYWlsIG1pY3JvcHJvZmlsZS1qd3QgcHJvZmlsZSBhZGRyZXNzIHBob25lIiwidXBuIjoic2VydmljZS1hY2NvdW50LWFhLXNpbXVsYXRvciIsImNsaWVudElkIjoiQUEtU0lNVUxBVE9SIiwiYWRkcmVzcyI6e30sImNsaWVudEhvc3QiOiIxMC4yMjQuMC4xODIiLCJyb2xlcyI6IkFBIiwic2VjcmV0LWV4cGlyeS10cyI6IjIwMjUtMTItMDRUMTU6MzM6MzQuMDU5MTgzIiwiY2xpZW50QWRkcmVzcyI6IjEwLjIyNC4wLjE4MiJ9.G-ErvIeZUtKkqN4CbaH09Nwzy9fUjKSD18xpNh6y74AQdB8YFfNuhC8m6nxMpDCLY2fUj8sIcQ--Jp-EYDxChSR8kQTbKDmYJzPGRGunO-hkLxPK83R3Q7Byc6KZot1lZlj-Dsv-l5JD0Ay0KpPr4bKqIas5FEZTx2qoA3p6J1CyNbiQ81t4_KxVoO44hmVKPe0FIVNLw9MK04bkHOwO-WMB9DoUX5Y8bBREYgRv_W3QEEC8gcI5vZLnHuBXSZSXQ3MDPSLOq7lGnMsxh5A0YF1Wvfqg3LJjXizMfIfRNMyq2M0eMwHQEWfjLNTEqS6Bd6qkjPREVdhRTTnHaggq9A")

	resp, err := client.Do(req)
	if err != nil {
		fmt.Printf("Error executing request: %v\n", err)
		return
	}
	defer resp.Body.Close()

	respBody, err := io.ReadAll(resp.Body)
	if err != nil {
		fmt.Printf("Error reading response body: %v\n", err)
		return
	}

	fmt.Printf("Status: %s\n", resp.Status)
	fmt.Printf("Headers: %v\n", resp.Header)
	fmt.Printf("Response Body: %s\n", string(respBody))

	if resp.StatusCode >= 400 {
		fmt.Printf("Error response received - Status Code: %d\n", resp.StatusCode)
	}
}

With Router Integration

package main

import (
	"bytes"
	"encoding/base64"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"time"
)

func main() {

	urlStr := "https://api.dev.sahamati.org.in/router/v2/Accounts/discover"

	body := []byte(fmt.Sprintf(`{
        "ver": "2.0.0",
        "timestamp": "%s",
        "txnid": "f35761ac-4a18-11e8-96ff-0277a9fbfedc2",
        "Customer": {
            "id": "customer_identifier@AA_identifier",
            "Identifiers": [
                {
                    "category": "STRONG",
                    "type": "AADHAAR",
                    "value": "XXXXXXXXXXXXXXXX"
                }
            ]
        },
        "FITypes": [
            "DEPOSIT"
        ]
    }`, time.Now().UTC().Format(time.RFC3339)))

	client := &http.Client{
		Timeout: 30 * time.Second,
	}

	req, err := http.NewRequest("POST", urlStr, bytes.NewBuffer(body))
	if err != nil {
		fmt.Printf("Error creating request: %v\n", err)
		return
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("x-jws-signature", "eyJhbGciOiJSUzI1NiIsImtpZCI6IlRlZ1FhMms3MUlFWlotaEhxcm1ueWFFc3ZvSWloNWdrVUx2SjFfTEhibGsiLCJjcml0IjpbImI2NCJdLCJiNjQiOmZhbHNlfQ..Dux_bx7X-q1YSvyNmZiyPM60ZgaK3MshW...")
	req.Header.Set("x-simulate-res", "Ok")
	req.Header.Set("Authorization", "Bearer eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJsRlByWU4wR3dBQ3YyUzJFVFZyRkVvZVVlc2VzelppQ2xIaVY1M3hrU3JNIn0.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.G-ErvIeZUtKkqN4CbaH09Nwzy9fUjKSD18xpNh6y74AQdB8YFfNuhC8m6nxMpDCLY2fUj8sIcQ--Jp-EYDxChSR8kQTbKDmYJzPGRGunO-hkLxPK83R3Q7Byc6KZot1lZlj-Dsv-l5JD0Ay0KpPr4bKqIas5FEZTx2qoA3p6J1CyNbiQ81t4_KxVoO44hmVKPe0FIVNLw9MK04bkHOwO-WMB9DoUX5Y8bBREYgRv_W3QEEC8gcI5vZLnHuBXSZSXQ3MDPSLOq7lGnMsxh5A0YF1Wvfqg3LJjXizMfIfRNMyq2M0eMwHQEWfjLNTEqS6Bd6qkjPREVdhRTTnHaggq9A")

	// Router changes - start

	recipientId := "FIP-SIMULATOR"
	metaInfo := map[string]string{
		"recipient-id": recipientId,
	}
	metaInfoBytes, err := json.Marshal(metaInfo)
	if err != nil {
		fmt.Printf("Error marshalling meta info to JSON: %v\n", err)
		return
	}
	base64MetaInfo := base64.StdEncoding.EncodeToString(metaInfoBytes)

	req.Header.Set("x-request-meta", base64MetaInfo) 
	
	// Router changes - end

	resp, err := client.Do(req)
	if err != nil {
		fmt.Printf("Error executing request: %v\n", err)
		return
	}
	defer resp.Body.Close()

	respBody, err := io.ReadAll(resp.Body)
	if err != nil {
		fmt.Printf("Error reading response body: %v\n", err)
		return
	}

	fmt.Printf("Status: %s\n", resp.Status)
	fmt.Printf("Headers: %v\n", resp.Header)
	fmt.Printf("Response Body: %s\n", string(respBody))

	if resp.StatusCode >= 400 {
		fmt.Printf("Error response received - Status Code: %d\n", resp.StatusCode)
	}
}