The aim of this guide is to demonstrate integrating the IP2Location C library within the Go programming language. In our example, we will be using the Linux environment.
First of all, you will need to install the IP2Location C library.
Follow the instructions at https://ip2location.com/developers/c to install the IP2Location C library.
Next, install Go on your Linux.
Follow the instructions at https://golang.org/doc/install to install the Go tools.
Next, you will need to download the IP2Location BIN file.
Download at https://ip2location.com/download
Extract out the BIN file and copy to the folder where you will store your Go codes.
Creating the Go codes
Create a text file called IP2Location.go and paste the following codes into it. Our example uses the DB24 BIN file.
The code does the following:
- Dynamically loads the IP2Location C library for use in the Go codes.
- Initializing the IP2Location object with the specified BIN database path.
- Performing geolocation query for the specified IP address and displaying the results.
- Performs cleanup and unload the IP2Location C library.
NOTE: Modify the db variable to store your own path to your BIN database file. Modify the ipAddress variable to store the IP address you wish to query.
package main |
/*
#include <IP2Location.h>
#cgo LDFLAGS: -L. -lIP2Location
*/
import "C"
import "fmt"
import "os"
func main() {
// the path to the IP2Location BIN database (modify this to your own path)
db := "./IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION-USAGETYPE.BIN"
// IP address to query (modify this to the IP address you wish to query)
ipAddress := "8.8.8.8"
// initializing the IP2Location object with BIN database path
IP2LocationObj := C.IP2Location_open(C.CString(db))
if IP2LocationObj == nil {
fmt.Printf("Please install the database in the correct path.\n")
os.Exit(1)
}
// uncomment this section if you want to load BIN database into cached memory
// if C.IP2Location_open_mem(IP2LocationObj, C.IP2LOCATION_CACHE_MEMORY) == -1 {
// fmt.Printf("Unable to load data into cache memory.\n")
// os.Exit(1)
// }
// uncomment this section if you want to load BIN database into shared memory
// if C.IP2Location_open_mem(IP2LocationObj, C.IP2LOCATION_SHARED_MEMORY) == -1 {
// fmt.Printf("Unable to load data into shared memory.\n")
// os.Exit(1)
// }
// performs IP2Location geolocation query for that specified IP address
record := C.IP2Location_get_all(IP2LocationObj, C.CString(ipAddress))
// display results if IP address is found in the BIN database
if record == nil {
fmt.Printf("Unable to locate IP address in the current database.\n")
} else {
fmt.Printf("IP Address: %s\n", ipAddress)
fmt.Printf("Country Code: %s\n", C.GoString(record.country_short))
fmt.Printf("Country Name: %s\n", C.GoString(record.country_long))
fmt.Printf("Region: %s\n", C.GoString(record.region))
fmt.Printf("City: %s\n", C.GoString(record.city))
fmt.Printf("ISP: %s\n", C.GoString(record.isp))
fmt.Printf("Latitude: %f\n", record.latitude)
fmt.Printf("Longitude: %f\n", record.longitude)
fmt.Printf("Domain: %s\n", C.GoString(record.domain))
fmt.Printf("ZIP Code: %s\n", C.GoString(record.zipcode))
fmt.Printf("Timezone: %s\n", C.GoString(record.timezone))
fmt.Printf("Netspeed: %s\n", C.GoString(record.netspeed))
fmt.Printf("IDD Code: %s\n", C.GoString(record.iddcode))
fmt.Printf("Area Code: %s\n", C.GoString(record.areacode))
fmt.Printf("Weather Station Code: %s\n", C.GoString(record.weatherstationcode))
fmt.Printf("Weather Station Name: %s\n", C.GoString(record.weatherstationname))
fmt.Printf("MCC: %s\n", C.GoString(record.mcc))
fmt.Printf("MNC: %s\n", C.GoString(record.mnc))
fmt.Printf("Mobile Brand: %s\n", C.GoString(record.mobilebrand))
fmt.Printf("Elevation: %f\n", record.elevation)
fmt.Printf("Usage Type: %s\n", C.GoString(record.usagetype))
fmt.Printf("API Version: %s\n", C.GoString(C.IP2Location_api_version_string()))
}
// free any allocated memory
C.IP2Location_free_record(record)
// close BIN database file handle
C.IP2Location_close(IP2LocationObj)
// delete shared memory if it was used
C.IP2Location_delete_shm()
}
Compiling the IP2Location.go
At the command prompt, run the following command:
go build IP2Location.go |
Run the program
At the command prompt, run the following command:
./IP2Location |
You should see something like below if everything goes well.
