Add tcp server example

server/tcp.lisp

@@ -0,0 +1,38 @@
+(ql:quickload "usocket")
+(ql:quickload "babel")
+
+
+(defparameter buf  (make-array 10
+                               :element-type '(unsigned-byte 8)
+                               :adjustable nil
+                               :fill-pointer nil
+                               :displaced-to nil
+                               :initial-element 0))
+                                        ;(defparameter s (usocket:socket-listen "localhost" 8080))
+
+;(defparameter su (usocket:socket-connect nil nil :protocol :stream :local-host "localhost" :local-port 8080))
+
+;; (defun display-buf (buf)
+;;   (let* ((message (flexi-streams:octets-to-string buf :external-format :utf-8 :end 10))
+;;          (trimmed-message (trim message)))
+;;     (format t "~a" trimmed-message)))
+
+
+
+
+(defun create-server (port)
+  (let* ((socket (usocket:socket-listen "127.0.0.1" port))
+         (connection (usocket:socket-accept socket :element-type 'character)))
+    (unwind-protect
+        (progn
+          (let ((data (read-line (usocket:socket-stream connection))))
+          (loop while data
+                do
+                (format t "~A~%" data)
+                (setf data (read-line (usocket:socket-stream connection) nil nil)))))
+;            (format (usocket:socket-stream connection) "Hello World~%")
+ ;           (force-output (usocket:socket-stream connection))))
+      (progn
+        (format t "Closing sockets~%")
+        (usocket:socket-close connection)
+        (usocket:socket-close socket)))))