Documentation
¶
Overview ¶
Package jhttp implements a bridge from HTTP to JSON-RPC. This permits requests to be submitted to a JSON-RPC server using HTTP as a transport.
Example ¶
package main
import (
"context"
"fmt"
"io/ioutil"
"log"
"net/http"
"net/http/httptest"
"strings"
"github.com/Elegant996/jrpc2/handler"
"github.com/Elegant996/jrpc2/jhttp"
"github.com/Elegant996/jrpc2/server"
)
func main() {
// Set up a local server to demonstrate the API.
loc := server.NewLocal(handler.Map{
"Test": handler.New(func(ctx context.Context, ss ...string) (string, error) {
return strings.Join(ss, " "), nil
}),
}, nil)
defer loc.Close()
b := jhttp.NewBridge(loc.Client)
defer b.Close()
hsrv := httptest.NewServer(b)
defer hsrv.Close()
rsp, err := http.Post(hsrv.URL, "application/json", strings.NewReader(`{
"jsonrpc": "2.0",
"id": 10235,
"method": "Test",
"params": ["full", "plate", "and", "packing", "steel"]
}`))
if err != nil {
log.Fatalf("POST request failed: %v", err)
}
body, err := ioutil.ReadAll(rsp.Body)
rsp.Body.Close()
if err != nil {
log.Fatalf("Reading response body: %v", err)
}
fmt.Println(string(body))
}
Output: {"jsonrpc":"2.0","id":10235,"result":"full plate and packing steel"}
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
Types ¶
type Bridge ¶
type Bridge struct {
// contains filtered or unexported fields
}
A Bridge is a http.Handler that bridges requests to a JSON-RPC client.
The body of the HTTP POST request must contain the complete JSON-RPC request message, encoded with Content-Type: application/json. Either a single request object or a list of request objects is supported.
If the request completes, whether or not there is an error, the HTTP response is 200 (OK) for ordinary requests or 204 (No Response) for notifications, and the response body contains the JSON-RPC response.
If the HTTP request method is not "POST", the bridge reports 405 (Method Not Allowed). If the Content-Type is not application/json, the bridge reports 415 (Unsupported Media Type).
The bridge attaches the inbound HTTP request to the context passed to the client, allowing an EncodeContext callback to retrieve state from the HTTP headers. Use jhttp.HTTPRequest to retrieve the request from the context.
func NewBridge ¶
NewBridge constructs a new Bridge that dispatches requests through c. It is safe for the caller to continue to use c concurrently with the bridge, as long as it does not close the client.
type Channel ¶
type Channel struct {
// contains filtered or unexported fields
}
A Channel implements an channel.Channel that dispatches requests via HTTP to a user-provided URL. Each message sent to the channel is an HTTP POST request with the message as its body.
func NewChannel ¶
func NewChannel(url string, transport http.RoundTripper) *Channel
NewChannel constructs a new channel that posts to the specified URL.
Source Files