diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index ea546da..c0c9c84 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -678,9 +678,11 @@
 
         /* See if the socket is ready */
         if (writing)
-            n = select(s->sock_fd+1, NULL, &fds, NULL, &tv);
+            n = select(Py_SAFE_DOWNCAST(s->sock_fd+1, SOCKET_T, int),
+                       NULL, &fds, NULL, &tv);
         else
-            n = select(s->sock_fd+1, &fds, NULL, NULL, &tv);
+            n = select(Py_SAFE_DOWNCAST(s->sock_fd+1, SOCKET_T, int),
+                       &fds, NULL, NULL, &tv);
     }
 #endif
 
@@ -937,7 +939,7 @@
 
 /*ARGSUSED*/
 static PyObject *
-makesockaddr(int sockfd, struct sockaddr *addr, int addrlen, int proto)
+makesockaddr(SOCKET_T sockfd, struct sockaddr *addr, size_t addrlen, int proto)
 {
     if (addrlen == 0) {
         /* No address -- may be recvfrom() from known socket */
@@ -1908,7 +1910,8 @@
             FD_SET(s->sock_fd, &fds);
             FD_ZERO(&fds_exc);
             FD_SET(s->sock_fd, &fds_exc);
-            res = select(s->sock_fd+1, NULL, &fds, &fds_exc, &tv);
+            res = select(Py_SAFE_DOWNCAST(s->sock_fd+1, SOCKET_T, int),
+                         NULL, &fds, &fds_exc, &tv);
             if (res == 0) {
                 res = WSAEWOULDBLOCK;
                 timeout = 1;
@@ -2151,10 +2154,10 @@
  * also possible that we return a number of bytes smaller than the request
  * bytes.
  */
-static ssize_t
-sock_recv_guts(PySocketSockObject *s, char* cbuf, int len, int flags)
+static Py_ssize_t
+sock_recv_guts(PySocketSockObject *s, char* cbuf, Py_ssize_t len, int flags)
 {
-    ssize_t outlen = -1;
+    Py_ssize_t outlen = -1;
     int timeout;
 #ifdef __VMS
     int remaining;
@@ -2236,11 +2239,11 @@
 static PyObject *
 sock_recv(PySocketSockObject *s, PyObject *args)
 {
-    int recvlen, flags = 0;
-    ssize_t outlen;
+    Py_ssize_t recvlen, outlen;
+    int flags = 0;
     PyObject *buf;
 
-    if (!PyArg_ParseTuple(args, "i|i:recv", &recvlen, &flags))
+    if (!PyArg_ParseTuple(args, "n|i:recv", &recvlen, &flags))
         return NULL;
 
     if (recvlen < 0) {
@@ -2287,14 +2290,13 @@
 {
     static char *kwlist[] = {"buffer", "nbytes", "flags", 0};
 
-    int recvlen = 0, flags = 0;
-    ssize_t readlen;
+    int flags = 0;
     Py_buffer pbuf;
     char *buf;
-    int buflen;
+    Py_ssize_t buflen, readlen, recvlen = 0;
 
     /* Get the buffer's memory */
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "w*|ii:recv_into", kwlist,
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "w*|ni:recv_into", kwlist,
                                      &pbuf, &recvlen, &flags))
         return NULL;
     buf = pbuf.buf;
@@ -2354,13 +2356,13 @@
  * 'addr' is a return value for the address object.  Note that you must decref
  * it yourself.
  */
-static ssize_t
-sock_recvfrom_guts(PySocketSockObject *s, char* cbuf, int len, int flags,
+static Py_ssize_t
+sock_recvfrom_guts(PySocketSockObject *s, char* cbuf, Py_ssize_t len, int flags,
                    PyObject** addr)
 {
     sock_addr_t addrbuf;
     int timeout;
-    ssize_t n = -1;
+    Py_ssize_t n = -1;
     socklen_t addrlen;
 
     *addr = NULL;
@@ -2416,10 +2418,10 @@
     PyObject *buf = NULL;
     PyObject *addr = NULL;
     PyObject *ret = NULL;
-    int recvlen, flags = 0;
-    ssize_t outlen;
+    int flags = 0;
+    Py_ssize_t recvlen, outlen;
 
-    if (!PyArg_ParseTuple(args, "i|i:recvfrom", &recvlen, &flags))
+    if (!PyArg_ParseTuple(args, "n|i:recvfrom", &recvlen, &flags))
         return NULL;
 
     if (recvlen < 0) {
@@ -2467,15 +2469,14 @@
 {
     static char *kwlist[] = {"buffer", "nbytes", "flags", 0};
 
-    int recvlen = 0, flags = 0;
-    ssize_t readlen;
+    int flags = 0;
     Py_buffer pbuf;
     char *buf;
-    int buflen;
+    Py_ssize_t readlen, buflen, recvlen = 0;
 
     PyObject *addr = NULL;
 
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "w*|ii:recvfrom_into",
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "w*|ni:recvfrom_into",
                                      kwlist, &pbuf,
                                      &recvlen, &flags))
         return NULL;
@@ -2505,7 +2506,7 @@
     PyBuffer_Release(&pbuf);
     /* Return the number of bytes read and the address.  Note that we do
        not do anything special here in the case that readlen < recvlen. */
-    return Py_BuildValue("lN", readlen, addr);
+    return Py_BuildValue("nN", readlen, addr);
 }
 
 PyDoc_STRVAR(recvfrom_into_doc,
@@ -2520,7 +2521,8 @@
 sock_send(PySocketSockObject *s, PyObject *args)
 {
     char *buf;
-    int len, n = -1, flags = 0, timeout;
+    Py_ssize_t len, n = -1;
+    int flags = 0, timeout;
     Py_buffer pbuf;
 
     if (!PyArg_ParseTuple(args, "y*|i:send", &pbuf, &flags))
@@ -2551,7 +2553,7 @@
     }
     if (n < 0)
         return s->errorhandler();
-    return PyLong_FromLong((long)n);
+    return PyLong_FromSsize_t(n);
 }
 
 PyDoc_STRVAR(send_doc,
@@ -2568,7 +2570,8 @@
 sock_sendall(PySocketSockObject *s, PyObject *args)
 {
     char *buf;
-    int len, n = -1, flags = 0, timeout;
+    Py_ssize_t len, n = -1;
+    int flags = 0, timeout;
     Py_buffer pbuf;
 
     if (!PyArg_ParseTuple(args, "y*|i:sendall", &pbuf, &flags))
@@ -2678,7 +2681,7 @@
     }
     if (n < 0)
         return s->errorhandler();
-    return PyLong_FromLong((long)n);
+    return PyLong_FromSsize_t(n);
 }
 
 PyDoc_STRVAR(sendto_doc,
@@ -3993,7 +3996,7 @@
         }
 #endif
     }
-    error = getnameinfo(res->ai_addr, res->ai_addrlen,
+    error = getnameinfo(res->ai_addr, (socklen_t) res->ai_addrlen,
                     hbuf, sizeof(hbuf), pbuf, sizeof(pbuf), flags);
     if (error) {
         set_gaierror(error);