Introduction
In this tutorial, we will create simple examples to send messages via WhatsApp API using Go.
First WhatsApp API Message Using GO
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/chat"
payload := strings.NewReader("token=token_here&to=966550883606&body=WhatsApp API on UltraMsg.com works good&priority=10&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}Send Image
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/image"
payload := strings.NewReader("token=token_here&to=966550883606&image=https://file-example.s3-accelerate.amazonaws.com/images/test.jpg&caption=image Caption&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}Send Document
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/document"
payload := strings.NewReader("token=token_here&to=966550883606&filename=hello.pdf&document=https://file-example.s3-accelerate.amazonaws.com/documents/cv.pdf&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}Send Audio
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/audio"
payload := strings.NewReader("token=token_here&to=966550883606&audio=https://file-example.s3-accelerate.amazonaws.com/audio/2.mp3&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}Send Voice
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/voice"
payload := strings.NewReader("token=token_here&to=966550883606&audio=https://file-example.s3-accelerate.amazonaws.com/voice/oog_example.ogg&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}Send Video
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/video"
payload := strings.NewReader("token=token_here&to=966550883606&video=https://file-example.s3-accelerate.amazonaws.com/video/test.mp4&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}Send Link
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/link"
payload := strings.NewReader("token=token_here&to=966550883606&link=https://en.wikipedia.org/wiki/COVID-19&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}Send Contact
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/contact"
payload := strings.NewReader("token=token_here&to=966550883606&[email protected]&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}Send Location
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/location"
payload := strings.NewReader("token=token_here&to=966550883606&address=ABC company \n Sixth floor , office 38&lat=25.197197&lng=55.2721877&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}Send Vcard
package main
import (
"fmt"
"strings"
"net/http"
"io/ioutil"
)
func main() {
url := "https://api.ultramsg.com/instance1150/messages/vcard"
payload := strings.NewReader("token=token_here&to=966550883606&vcard= BEGIN:VCARD\nVERSION:3.0\nN:lastname;firstname\nFN:firstname lastname\nTEL;TYPE=CELL;waid=14000000001:14000000002\nNICKNAME:nickname\nBDAY:01.01.1987\nX-GENDER:M\nNOTE:note\nADR;TYPE=home:;;;;;;\nADR;TYPE=work_:;;;;;;\nEND:VCARD&referenceId=")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("content-type", "application/x-www-form-urlencoded")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
fmt.Println(res)
fmt.Println(string(body))
}finally, you can see Full Whatsapp API Documentation and FAQ.