114 lines
2 KiB
Markdown
114 lines
2 KiB
Markdown
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# JSON-RPC 2.0
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Golang implementation of JSON-RPC 2.0 server with generics.
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Go 1.18+ required
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## Features:
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- [x] HTTP/HTTPS transport
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- [x] TCP transport
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- [ ] WebSocket transport
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## Usage (http transport)
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1. Create JSON-RPC server:
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```go
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import "go.neonxp.dev/jsonrpc2/rpc"
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...
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s := rpc.New()
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```
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2. Add required transport(s):
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```go
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import "go.neonxp.dev/jsonrpc2/transport"
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...
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s.AddTransport(&transport.HTTP{Bind: ":8000"})
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s.AddTransport(&transport.TCP{Bind: ":3000"})
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```
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3. Write handler:
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```go
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func Multiply(ctx context.Context, args *Args) (int, error) {
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return args.A * args.B, nil
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}
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```
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Handler must have exact two arguments (context and input of any json serializable type) and exact two return values (output of any json serializable type and error)
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4. Wrap handler with `rpc.H` method and register it in server:
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```go
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s.Register("multiply", rpc.H(Multiply))
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```
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5. Run RPC server:
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```go
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s.Run(ctx)
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```
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## Custom transport
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Any transport must implement simple interface `transport.Transport`:
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```go
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type Transport interface {
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Run(ctx context.Context, resolver Resolver) error
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}
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```
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## Complete example
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[Full code](/example)
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```go
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package main
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import (
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"context"
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"go.neonxp.dev/jsonrpc2/rpc"
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"go.neonxp.dev/jsonrpc2/transport"
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)
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func main() {
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s := rpc.New()
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s.AddTransport(&transport.HTTP{Bind: ":8000"}) // HTTP transport
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s.AddTransport(&transport.TCP{Bind: ":3000"}) // TCP transport
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s.Register("multiply", rpc.H(Multiply))
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s.Register("divide", rpc.H(Divide))
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s.Run(context.Background())
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}
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func Multiply(ctx context.Context, args *Args) (int, error) {
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//...
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}
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func Divide(ctx context.Context, args *Args) (*Quotient, error) {
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//...
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}
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type Args struct {
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A int `json:"a"`
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B int `json:"b"`
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}
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type Quotient struct {
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Quo int `json:"quo"`
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Rem int `json:"rem"`
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}
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```
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## Author
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Alexander Kiryukhin <i@neonxp.dev>
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## License
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