Initial commit of Ccnet server.

python/ccnet/utils.py

@@ -0,0 +1,45 @@
+import os
+import socket
+
+from ccnet.errors import NetworkError
+
+def recvall(fd, total):
+    remain = total
+    data = ''
+    while remain > 0:
+        try:
+            new = fd.recv(remain)
+        except socket.error as e:
+            raise NetworkError('Failed to read from socket: %s' % e)
+
+        n = len(new)
+        if n <= 0:
+            raise NetworkError("Failed to read from socket")
+        else:
+            data += new
+            remain -= n
+
+    return data
+
+def sendall(fd, data):
+    total = len(data)
+    offset = 0
+    while offset < total:
+        try:
+            n = fd.send(data[offset:])
+        except socket.error as e:
+            raise NetworkError('Failed to write to socket: %s' % e)
+
+        if n <= 0:
+            raise NetworkError('Failed to write to socket')
+        else:
+            offset += n
+
+def is_win32():
+    return os.name == 'nt'
+
+def make_socket_closeonexec(fd):
+    if not is_win32():
+        import fcntl
+        old_flags = fcntl.fcntl(fd, fcntl.F_GETFD)
+        fcntl.fcntl(fd, fcntl.F_SETFD, old_flags | fcntl.FD_CLOEXEC)