set up remote connserver (#245)

pkg/wshrpc/wshclient/wshclientutil.go

@@ -4,6 +4,8 @@
 package wshclient
 
 import (
+	"errors"
+
 	"github.com/wavetermdev/thenextwave/pkg/util/utilfn"
 	"github.com/wavetermdev/thenextwave/pkg/wshrpc"
 	"github.com/wavetermdev/thenextwave/pkg/wshutil"
@@ -14,6 +16,9 @@ func sendRpcRequestCallHelper[T any](w *wshutil.WshRpc, command string, data int
 		opts = &wshrpc.RpcOpts{}
 	}
 	var respData T
+	if w == nil {
+		return respData, errors.New("nil wshrpc passed to wshclient")
+	}
 	if opts.NoResponse {
 		err := w.SendCommand(command, data, opts)
 		if err != nil {
@@ -32,17 +37,26 @@ func sendRpcRequestCallHelper[T any](w *wshutil.WshRpc, command string, data int
 	return respData, nil
 }
 
+func rtnErr[T any](ch chan wshrpc.RespOrErrorUnion[T], err error) {
+	go func() {
+		ch <- wshrpc.RespOrErrorUnion[T]{Error: err}
+		close(ch)
+	}()
+}
+
 func sendRpcRequestResponseStreamHelper[T any](w *wshutil.WshRpc, command string, data interface{}, opts *wshrpc.RpcOpts) chan wshrpc.RespOrErrorUnion[T] {
 	if opts == nil {
 		opts = &wshrpc.RpcOpts{}
 	}
 	respChan := make(chan wshrpc.RespOrErrorUnion[T])
+	if w == nil {
+		rtnErr(respChan, errors.New("nil wshrpc passed to wshclient"))
+		return respChan
+	}
 	reqHandler, err := w.SendComplexRequest(command, data, opts)
 	if err != nil {
-		go func() {
-			respChan <- wshrpc.RespOrErrorUnion[T]{Error: err}
-			close(respChan)
-		}()
+		rtnErr(respChan, err)
+		return respChan
 	} else {
 		go func() {
 			defer close(respChan)

pkg/wshrpc/wshrpctypes.go

@@ -107,6 +107,7 @@ type RpcOpts struct {
 type RpcContext struct {
 	BlockId string `json:"blockid,omitempty"`
 	TabId   string `json:"tabid,omitempty"`
+	Conn    string `json:"conn,omitempty"`
 }
 
 func HackRpcContextIntoData(dataPtr any, rpcContext RpcContext) {