Add golang echo server

Dockerfile

@@ -7,22 +7,26 @@ RUN DEBIAN_FRONTEND=noninteractive \
 
 ENV LANG en_US.UTF-8
 ENV WORKON_HOME /usr/local/python-venvs
+ENV GOMAXPROCS 1
 
 RUN mkdir -p /usr/local/python-venvs
 
 RUN DEBIAN_FRONTEND=noninteractive \
         apt-get update && apt-get install -y \
             autoconf automake libtool build-essential \
-            python3 python3-pip git nodejs gosu
+            python3 python3-pip git nodejs golang gosu
 
 RUN pip3 install vex
 RUN vex --python=python3.5 -m bench pip install -U pip
 RUN mkdir -p /var/lib/cache/pip
 
 ADD servers /usr/src/servers
+RUN go build /usr/src/servers/goecho.go
 RUN vex bench pip --cache-dir=/var/lib/cache/pip \
         install -r /usr/src/servers/requirements.txt
 
+RUN vex bench pip freeze -r /usr/src/servers/requirements.txt
+
 EXPOSE 25000
 
 VOLUME /var/lib/cache

echo_client

@@ -42,8 +42,6 @@ if __name__ == '__main__':
                         help='message size in bytes')
     parser.add_argument('--duration', '-T', default=30, type=int,
                         help='duration of test in seconds')
-    parser.add_argument('--times', default=1, type=int,
-                        help='number of times to run the test')
     parser.add_argument('--concurrency', default=3, type=int,
                         help='request concurrency')
     parser.add_argument('--timeout', default=2, type=int,
@@ -75,7 +73,7 @@ if __name__ == '__main__':
         else:
             sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 
-        sock.settimeout(15)
+        sock.settimeout(timeout / 1000)
         sock.connect(addr)
 
         n = 0
@@ -102,7 +100,6 @@ if __name__ == '__main__':
 
         return n, latency_stats, min_latency, max_latency
 
-    TIMES = args.times
     N = args.concurrency
     DURATION = args.duration
 
@@ -111,7 +108,7 @@ if __name__ == '__main__':
     messages = 0
     latency_stats = None
     start = time.monotonic()
-    for _ in range(TIMES):
+
     with futures.ProcessPoolExecutor(max_workers=N) as e:
         fs = []
         for _ in range(N):

run_benchmarks

@@ -73,6 +73,12 @@ benchmarks = [{
     'server': nodejs + ['/usr/src/servers/nodeecho.js'],
     'server_address': tcp_address,
     'client': tcp_client,
+}, {
+    'name': 'tcpecho-golang',
+    'title': 'TCP echo server (golang)',
+    'server': ['/usr/src/servers/goecho'],
+    'server_address': tcp_address,
+    'client': tcp_client,
 }, {
     'name': 'tcpecho-asyncio-streams',
     'title': 'TCP echo server (asyncio/streams)',

servers/.gitignore

+/goecho

servers/goecho.go

+// Taken from https://gist.github.com/paulsmith/775764#file-echo-go
+
+package main
+
+import (
+    "net"
+    "strconv"
+    "fmt"
+)
+
+const PORT = 25000
+
+func main() {
+    server, err := net.Listen("tcp", ":" + strconv.Itoa(PORT))
+    if server == nil {
+
+        panic("couldn't start listening: " + err.Error())
+    }
+    conns := clientConns(server)
+    for {
+        go handleConn(<-conns)
+    }
+}
+
+func clientConns(listener net.Listener) chan net.Conn {
+    ch := make(chan net.Conn)
+    i := 0
+    go func() {
+        for {
+            client, err := listener.Accept()
+            if client == nil {
+                fmt.Printf("couldn't accept: " + err.Error())
+                continue
+            }
+            i++
+            fmt.Printf("%d: %v <-> %v\n", i, client.LocalAddr(), client.RemoteAddr())
+            ch <- client
+        }
+    }()
+    return ch
+}
+
+func handleConn(client net.Conn) {
+    buf := make([]byte, 102400)
+    for {
+        reqLen, err := client.Read(buf)
+        if err != nil {
+            break
+        }
+        if reqLen > 0 {
+            client.Write(buf[:reqLen])
+        }
+    }
+}

servers/requirements.txt

-uvloop
-curio
-aiohttp
-httptools
-gevent
-tornado
+curio==0.1
+aiohttp==0.21.5
+gevent==1.1.1
+tornado==4.3
+Twisted==16.1.1
+httptools==0.0.4
+uvloop==0.4.7