various socket write functions need "except -1"

coro/socket.pxd

@@ -169,11 +169,11 @@ cdef public class sock [ object sock_object, type sock_type ]:
     cpdef object recvfrom (self, int buffer_size, int flags=?)
     cpdef bytes recv_exact (self, int bytes)
     cpdef readv (self, list size_list)
-    cpdef int send (self, bytes data)
-    cpdef int sendto (self, bytes data, address, int flags=?)
-    cpdef int sendall (self, bytes data)
-    cpdef int write (self, bytes data)
-    cpdef int writev (self, list data)
+    cpdef int send (self, bytes data) except -1
+    cpdef int sendto (self, bytes data, address, int flags=?) except -1
+    cpdef int sendall (self, bytes data) except -1
+    cpdef int write (self, bytes data) except -1
+    cpdef int writev (self, list data) except -1
     # XXX is there a cpython.type for buffer objects?
     IF False:
         cpdef recv_into (self, buffer, int nbytes=?, int flags=?)

coro/socket.pyx

@@ -279,7 +279,7 @@ cdef public class sock [ object sock_object, type sock_type ]:
             else:
                 raise_oserror()
 
-    cpdef int send (self, bytes data):
+    cpdef int send (self, bytes data) except -1:
         """Send data on the socket.
 
         This will repeatedly call write to ensure all data has been sent. This
@@ -319,21 +319,21 @@ cdef public class sock [ object sock_object, type sock_type ]:
                 if left == 0:
                     return sent
 
-    cpdef int sendall(self, bytes data):
+    cpdef int sendall(self, bytes data) except -1:
         """Send all data.
 
         This is an alias for the :meth:`send` method.
         """
         return self.send(data)
 
-    cpdef int write (self, bytes data):
+    cpdef int write (self, bytes data) except -1:
         """Write data.
 
         This is an alias for the :meth:`send` method.
         """
         return self.send(data)
 
-    cpdef int sendto (self, bytes data, address, int flags=0):
+    cpdef int sendto (self, bytes data, address, int flags=0) except -1:
         """Send data to a specific address.
 
         :param data: The data to send.
@@ -614,7 +614,7 @@ cdef public class sock [ object sock_object, type sock_type ]:
         finally:
             PyMem_Free(iov)
 
-    cpdef int writev (self, list data):
+    cpdef int writev (self, list data) except -1:
         """Write a vector array of data.
 
         This will repeatedly call writev until all data is sent. If it is