To get the package, execute:
go get -u github.com/phin1x/go-ipp
- only depends on the standard go library (only dependency is for testing)
- basic ipp 2.0 compatible Client
- extended client for cups server
- create custom ipp requests
- parse ipp responses and ipp control files
Print a file with the ipp client
package main
import "github.com/phin1x/go-ipp"
func main() {
// create a new ipp client
client := ipp.NewIPPClient("printserver", 631, "user", "password", true)
// print file
client.PrintFile("/path/to/file", "my-printer", map[string]interface{}{})
}Craft and send a custom request
package main
import "github.com/phin1x/go-ipp"
func main() {
// define a ipp request
req := ipp.NewRequest(ipp.OperationGetJobs, 1)
req.OperationAttributes[ipp.AttributeWhichJobs] = "completed"
req.OperationAttributes[ipp.AttributeMyJobs] = myJobs
req.OperationAttributes[ipp.AttributeFirstJobID] = 42
req.OperationAttributes[ipp.AttributeRequestingUserName] = "fabian"
// encode request to bytes
payload, err := req.Encode()
if err != nil {
panic(err)
}
// send ipp request to remote server via http
httpReq, err := http.NewRequest("POST", "http://my-print-server:631/printers/my-printer", bytes.NewBuffer(payload))
if err != nil {
panic(err)
}
// set ipp headers
httpReq.Header.Set("Content-Length", len(payload))
httpReq.Header.Set("Content-Type", ipp.ContentTypeIPP)
httpClient := &http.Client()
httpResp, err := httpClient.Do(httpReq)
if err != nil {
panic(err)
}
defer httpResp.Body.Close()
// response must be 200 for a successful operation
// other possible http codes are:
// - 500 -> server error
// - 426 -> sever requests a encrypted connection
// - 401 -> forbidden -> need authorization header or user is not permitted
if httpResp.StatusCode != 200 {
panic("non 200 response from server")
}
// decode ipp response
resp, err := ipp.NewResponseDecoder(httpResp.Body).Decode(nil)
if err != nil {
panic(err)
}
// check if the response status is "ok"
if err := resp.CheckForErrors(); err != nil {
panic(err)
}
// do something with the returned data
for _, job := resp.JobAttributes {
// ...
}
}Apache Licence Version 2.0
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