Add source code and testing scripts for basic Go server

debug.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+if test $# -ne 1; then
+    echo "Usage: $0 <kvm_image>" 1>&2
+    exit 1
+fi
+
+kvm_image="$1"
+debug_port="12345"
+
+# Show script commands when run.
+set -x
+
+#-ex "hbreak lwip_socket" \
+#-ex "hbreak lwip_setsockopt" \
+
+gdb --eval-command="target remote :12345" -ex "set confirm off" -ex "set pagination off" \
+    # -ex "hbreak lwip_bind" \
+   # -ex "hbreak  lwip_socket" \
+    -ex "c" \
+    -ex "disconnect" -ex "set arch i386:x86-64:intel" \
+    -ex "target remote localhost:$debug_port" "$kvm_image"

helloworld.go

@@ -1,7 +1,25 @@
 package main
 
 import "fmt"
+import "net/http"
+
+func handler(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprintf(w, "Hello!")
+}
 
 func main() {
     fmt.Println("hello world")
-}
+
+    fmt.Println("Waiting")
+    j:=0
+    for i:=0; i < 1000000; i++ {
+    	for i1:=0; i1 < 6000; i1++ {
+		j++
+    	}
+    }
+    fmt.Println("Done")
+
+
+    http.HandleFunc("/", handler)
+    http.ListenAndServe(":9999", nil)
+}

run_dhcp.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+if test $# -ne 1; then
+    echo "Usage: $0 <kvm_image>" 1>&2
+    exit 1
+fi
+
+kvm_image="$1"
+qemu_script="/usr/local/bin/qemu-guest"
+debug_port="12345"
+bridge_iface="uk0"
+bridge_ip="172.44.0.1"
+start_ip="172.44.0.2"
+end_ip="172.44.0.254"
+
+echo "Creating bridge $bridge_iface with IP address $bridge_ip ..."
+sudo brctl addbr "$bridge_iface" || true
+sudo ifconfig "$bridge_iface" "$bridge_ip"
+
+echo "Starting dnsmasq (DHCP server) listening on bridge $bridge_iface ..."
+sudo dnsmasq -d \
+    --log-queries \
+    --bind-dynamic \
+    --interface="$bridge_iface" \
+    --listen-addr="$bridge_ip" \
+    --dhcp-range="$start_ip","$end_ip",255.255.255.0,12h > dnsmasq.log 2>&1 &
+echo "Creating bridge $bridge_iface with IP address $bridge_ip ..."
+
+echo "Starting KVM image in debug mode. GDB server listening on port $debug_port ..."
+"$qemu_script" -k "$kvm_image" -b "$bridge_iface" -m 4096 -a "" -g "$debug_port" -P

run_static.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+if test $# -ne 1; then
+    echo "Usage: $0 <kvm_image>" 1>&2
+    exit 1
+fi
+
+kvm_image="$1"
+qemu_script="/usr/local/bin/qemu-guest"
+debug_port="12345"
+bridge_iface="uk0"
+bridge_ip="172.44.0.1"
+ip="172.44.0.2"
+
+echo "Creating bridge $bridge_iface with IP address $bridge_ip ..."
+sudo brctl addbr "$bridge_iface" || true
+sudo ifconfig "$bridge_iface" "$bridge_ip"
+
+echo "Starting KVM image in debug mode. GDB server listening on port $debug_port ..."
+"$qemu_script" -k "$kvm_image" -b "$bridge_iface" -m 4096 -a "netdev.ipv4_addr=${ip}
+netdev.ipv4_gw_addr=172.44.0.1 netdev.ipv4_subnet_mask=255.255.255.0 --" \
+-g "$debug_port" -P