mirror of https://github.com/tidwall/tile38.git
100 lines
2.8 KiB
Go
100 lines
2.8 KiB
Go
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// Copyright 2015-2018 The NATS Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package test
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import (
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"fmt"
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"net"
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"runtime"
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"strings"
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"testing"
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"time"
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"github.com/nats-io/go-nats"
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)
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func TestMaxPayload(t *testing.T) {
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srv, opts := RunServerWithConfig("./configs/override.conf")
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defer srv.Shutdown()
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endpoint := fmt.Sprintf("%s:%d", opts.Host, opts.Port)
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nc, err := nats.Connect(fmt.Sprintf("nats://%s/", endpoint))
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if err != nil {
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t.Fatalf("Could not connect to server: %v", err)
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}
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defer nc.Close()
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size := 4 * 1024 * 1024
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big := sizedBytes(size)
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err = nc.Publish("foo", big)
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if err != nats.ErrMaxPayload {
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t.Fatalf("Expected a Max Payload error")
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}
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conn, err := net.DialTimeout("tcp", endpoint, nc.Opts.Timeout)
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if err != nil {
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t.Fatalf("Could not make a raw connection to the server: %v", err)
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}
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defer conn.Close()
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info := make([]byte, 512)
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_, err = conn.Read(info)
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if err != nil {
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t.Fatalf("Expected an info message to be sent by the server: %s", err)
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}
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pub := fmt.Sprintf("PUB bar %d\r\n", size)
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conn.Write([]byte(pub))
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if err != nil {
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t.Fatalf("Could not publish event to the server: %s", err)
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}
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errMsg := make([]byte, 35)
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_, err = conn.Read(errMsg)
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if err != nil {
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t.Fatalf("Expected an error message to be sent by the server: %s", err)
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}
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if !strings.Contains(string(errMsg), "Maximum Payload Violation") {
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t.Errorf("Received wrong error message (%v)\n", string(errMsg))
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}
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// Client proactively omits sending the message so server
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// does not close the connection.
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if nc.IsClosed() {
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t.Errorf("Expected connection to not be closed.")
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}
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// On the other hand client which did not proactively omitted
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// publishing the bytes following what is suggested by server
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// in the info message has its connection closed.
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_, err = conn.Write(big)
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if err == nil && runtime.GOOS != "windows" {
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t.Errorf("Expected error due to maximum payload transgression.")
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}
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// On windows, the previous write will not fail because the connection
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// is not fully closed at this stage.
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if runtime.GOOS == "windows" {
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// Issuing a PING and not expecting the PONG.
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_, err = conn.Write([]byte("PING\r\n"))
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if err == nil {
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conn.SetReadDeadline(time.Now().Add(500 * time.Millisecond))
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_, err = conn.Read(big)
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if err == nil {
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t.Errorf("Expected closed connection due to maximum payload transgression.")
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}
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}
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}
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}
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