diff --git a/examples/unix/sock-client.py b/examples/unix/sock-client.py
index 08a39b196a..858420b99f 100644
--- a/examples/unix/sock-client.py
+++ b/examples/unix/sock-client.py
@@ -1,5 +1,5 @@
 try:
-    import rawsocket as _socket
+    import microsocket as _socket
 except:
     import _socket
 
diff --git a/examples/unix/sock-server.py b/examples/unix/sock-server.py
index f08aede3c1..f99d7974a7 100644
--- a/examples/unix/sock-server.py
+++ b/examples/unix/sock-server.py
@@ -1,5 +1,5 @@
 try:
-    import rawsocket as socket
+    import microsocket as socket
 except:
     import socket
 
diff --git a/py/obj.c b/py/obj.c
index e21596fdf5..e3e9dbfd55 100644
--- a/py/obj.c
+++ b/py/obj.c
@@ -253,3 +253,4 @@ mp_obj_t mp_obj_len_maybe(mp_obj_t o_in) {
 mp_obj_t mp_identity(mp_obj_t self) {
     return self;
 }
+MP_DEFINE_CONST_FUN_OBJ_1(mp_identity_obj, mp_identity);
diff --git a/py/obj.h b/py/obj.h
index f99bcc40e7..48d332e200 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -370,6 +370,7 @@ extern const mp_obj_type_t fun_bc_type;
 void mp_obj_fun_bc_get(mp_obj_t self_in, int *n_args, uint *n_state, const byte **code);
 
 mp_obj_t mp_identity(mp_obj_t self);
+MP_DECLARE_CONST_FUN_OBJ(mp_identity_obj);
 
 // super
 extern const mp_obj_type_t super_type;
@@ -397,5 +398,9 @@ typedef struct _mp_obj_static_class_method_t {
 // sequence helpers
 void mp_seq_multiply(const void *items, uint item_sz, uint len, uint times, void *dest);
 bool m_seq_get_fast_slice_indexes(machine_uint_t len, mp_obj_t slice, machine_uint_t *begin, machine_uint_t *end);
-#define m_seq_copy(dest, src, len, item_sz) memcpy(dest, src, len * sizeof(item_sz))
+#define m_seq_copy(dest, src, len, item_t) memcpy(dest, src, len * sizeof(item_t))
+#define m_seq_cat(dest, src1, len1, src2, len2, item_t) { memcpy(dest, src1, len1 * sizeof(item_t)); memcpy(dest + len1, src2, len2 * sizeof(item_t)); }
 bool mp_seq_cmp_bytes(int op, const byte *data1, uint len1, const byte *data2, uint len2);
+bool mp_seq_cmp_objs(int op, const mp_obj_t *items1, uint len1, const mp_obj_t *items2, uint len2);
+mp_obj_t mp_seq_index_obj(const mp_obj_t *items, uint len, uint n_args, const mp_obj_t *args);
+mp_obj_t mp_seq_count_obj(const mp_obj_t *items, uint len, mp_obj_t value);
diff --git a/py/objlist.c b/py/objlist.c
index 14f3a5760a..35bab2a398 100644
--- a/py/objlist.c
+++ b/py/objlist.c
@@ -75,51 +75,8 @@ static bool list_cmp_helper(int op, mp_obj_t self_in, mp_obj_t another_in) {
     }
     mp_obj_list_t *self = self_in;
     mp_obj_list_t *another = another_in;
-    if (op == RT_BINARY_OP_EQUAL && self->len != another->len) {
-        return false;
-    }
 
-    // Let's deal only with > & >=
-    if (op == RT_BINARY_OP_LESS || op == RT_BINARY_OP_LESS_EQUAL) {
-        mp_obj_t t = self;
-        self = another;
-        another = t;
-        if (op == RT_BINARY_OP_LESS) {
-            op = RT_BINARY_OP_MORE;
-        } else {
-            op = RT_BINARY_OP_MORE_EQUAL;
-        }
-    }
-
-    int len = self->len < another->len ? self->len : another->len;
-    bool eq_status = true; // empty lists are equal
-    bool rel_status;
-    for (int i = 0; i < len; i++) {
-        eq_status = mp_obj_equal(self->items[i], another->items[i]);
-        if (op == RT_BINARY_OP_EQUAL && !eq_status) {
-            return false;
-        }
-        rel_status = (rt_binary_op(op, self->items[i], another->items[i]) == mp_const_true);
-        if (!eq_status && !rel_status) {
-            return false;
-        }
-    }
-
-    // If we had tie in the last element...
-    if (eq_status) {
-        // ... and we have lists of different lengths...
-        if (self->len != another->len) {
-            if (self->len < another->len) {
-                // ... then longer list length wins (we deal only with >)
-                return false;
-            }
-        } else if (op == RT_BINARY_OP_MORE) {
-            // Otherwise, if we have strict relation, equality means failure
-            return false;
-        }
-    }
-
-    return true;
+    return mp_seq_cmp_objs(op, self->items, self->len, another->items, another->len);
 }
 
 static mp_obj_t list_unary_op(int op, mp_obj_t self_in) {
@@ -157,8 +114,7 @@ static mp_obj_t list_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
             }
             mp_obj_list_t *p = rhs;
             mp_obj_list_t *s = list_new(o->len + p->len);
-            memcpy(s->items, o->items, sizeof(mp_obj_t) * o->len);
-            memcpy(s->items + o->len, p->items, sizeof(mp_obj_t) * p->len);
+            m_seq_cat(s->items, o->items, o->len, p->items, p->len, mp_obj_t);
             return s;
         }
         case RT_BINARY_OP_INPLACE_ADD:
@@ -304,38 +260,14 @@ static mp_obj_t list_copy(mp_obj_t self_in) {
 static mp_obj_t list_count(mp_obj_t self_in, mp_obj_t value) {
     assert(MP_OBJ_IS_TYPE(self_in, &list_type));
     mp_obj_list_t *self = self_in;
-    int count = 0;
-    for (int i = 0; i < self->len; i++) {
-         if (mp_obj_equal(self->items[i], value)) {
-              count++;
-         }
-    }
-
-    return mp_obj_new_int(count);
+    return mp_seq_count_obj(self->items, self->len, value);
 }
 
 static mp_obj_t list_index(uint n_args, const mp_obj_t *args) {
     assert(2 <= n_args && n_args <= 4);
     assert(MP_OBJ_IS_TYPE(args[0], &list_type));
     mp_obj_list_t *self = args[0];
-    mp_obj_t *value = args[1];
-    uint start = 0;
-    uint stop = self->len;
-
-    if (n_args >= 3) {
-        start = mp_get_index(self->base.type, self->len, args[2]);
-        if (n_args >= 4) {
-            stop = mp_get_index(self->base.type, self->len, args[3]);
-        }
-    }
-
-    for (uint i = start; i < stop; i++) {
-         if (mp_obj_equal(self->items[i], value)) {
-              return mp_obj_new_int(i);
-         }
-    }
-
-    nlr_jump(mp_obj_new_exception_msg(MP_QSTR_ValueError, "object not in list"));
+    return mp_seq_index_obj(self->items, self->len, n_args, args);
 }
 
 static mp_obj_t list_insert(mp_obj_t self_in, mp_obj_t idx, mp_obj_t obj) {
diff --git a/py/objtuple.c b/py/objtuple.c
index 3e5041c9dd..7221db7746 100644
--- a/py/objtuple.c
+++ b/py/objtuple.c
@@ -74,6 +74,18 @@ static mp_obj_t tuple_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const m
     }
 }
 
+// Don't pass RT_BINARY_OP_NOT_EQUAL here
+static bool tuple_cmp_helper(int op, mp_obj_t self_in, mp_obj_t another_in) {
+    assert(MP_OBJ_IS_TYPE(self_in, &tuple_type));
+    if (!MP_OBJ_IS_TYPE(another_in, &tuple_type)) {
+        return false;
+    }
+    mp_obj_tuple_t *self = self_in;
+    mp_obj_tuple_t *another = another_in;
+
+    return mp_seq_cmp_objs(op, self->items, self->len, another->items, another->len);
+}
+
 static mp_obj_t tuple_unary_op(int op, mp_obj_t self_in) {
     mp_obj_tuple_t *self = self_in;
     switch (op) {
@@ -102,6 +114,35 @@ static mp_obj_t tuple_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
             uint index = mp_get_index(o->base.type, o->len, rhs);
             return o->items[index];
         }
+        case RT_BINARY_OP_ADD:
+        {
+            if (!MP_OBJ_IS_TYPE(rhs, &tuple_type)) {
+                return NULL;
+            }
+            mp_obj_tuple_t *p = rhs;
+            mp_obj_tuple_t *s = mp_obj_new_tuple(o->len + p->len, NULL);
+            m_seq_cat(s->items, o->items, o->len, p->items, p->len, mp_obj_t);
+            return s;
+        }
+        case RT_BINARY_OP_MULTIPLY:
+        {
+            if (!MP_OBJ_IS_SMALL_INT(rhs)) {
+                return NULL;
+            }
+            int n = MP_OBJ_SMALL_INT_VALUE(rhs);
+            mp_obj_tuple_t *s = mp_obj_new_tuple(o->len * n, NULL);
+            mp_seq_multiply(o->items, sizeof(*o->items), o->len, n, s->items);
+            return s;
+        }
+        case RT_BINARY_OP_EQUAL:
+        case RT_BINARY_OP_LESS:
+        case RT_BINARY_OP_LESS_EQUAL:
+        case RT_BINARY_OP_MORE:
+        case RT_BINARY_OP_MORE_EQUAL:
+            return MP_BOOL(tuple_cmp_helper(op, lhs, rhs));
+        case RT_BINARY_OP_NOT_EQUAL:
+            return MP_BOOL(!tuple_cmp_helper(RT_BINARY_OP_EQUAL, lhs, rhs));
+
         default:
             // op not supported
             return NULL;
@@ -112,6 +153,26 @@ static mp_obj_t tuple_getiter(mp_obj_t o_in) {
     return mp_obj_new_tuple_iterator(o_in, 0);
 }
 
+static mp_obj_t tuple_count(mp_obj_t self_in, mp_obj_t value) {
+    assert(MP_OBJ_IS_TYPE(self_in, &tuple_type));
+    mp_obj_tuple_t *self = self_in;
+    return mp_seq_count_obj(self->items, self->len, value);
+}
+static MP_DEFINE_CONST_FUN_OBJ_2(tuple_count_obj, tuple_count);
+
+static mp_obj_t tuple_index(uint n_args, const mp_obj_t *args) {
+    assert(MP_OBJ_IS_TYPE(args[0], &tuple_type));
+    mp_obj_tuple_t *self = args[0];
+    return mp_seq_index_obj(self->items, self->len, n_args, args);
+}
+static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(tuple_index_obj, 2, 4, tuple_index);
+
+static const mp_method_t tuple_type_methods[] = {
+    { "count", &tuple_count_obj },
+    { "index", &tuple_index_obj },
+    { NULL, NULL }, // end-of-list sentinel
+};
+
 const mp_obj_type_t tuple_type = {
     { &mp_const_type },
     "tuple",
@@ -120,6 +181,7 @@ const mp_obj_type_t tuple_type = {
     .unary_op = tuple_unary_op,
     .binary_op = tuple_binary_op,
     .getiter = tuple_getiter,
+    .methods = tuple_type_methods,
 };
 
 // the zero-length tuple
diff --git a/py/qstrdefs.h b/py/qstrdefs.h
index 3d4f4e2488..680c4bcf73 100644
--- a/py/qstrdefs.h
+++ b/py/qstrdefs.h
@@ -37,6 +37,7 @@ Q(IndentationError)
 Q(IndexError)
 Q(KeyError)
 Q(NameError)
+Q(NotImplementedError)
 Q(OSError)
 Q(SyntaxError)
 Q(TypeError)
diff --git a/py/runtime.c b/py/runtime.c
index 0ac470fbc2..aaac884d65 100644
--- a/py/runtime.c
+++ b/py/runtime.c
@@ -177,6 +177,7 @@ void rt_init(void) {
     mp_map_add_qstr(&map_builtins, MP_QSTR_OverflowError, mp_obj_new_exception(MP_QSTR_OverflowError));
     mp_map_add_qstr(&map_builtins, MP_QSTR_OSError, mp_obj_new_exception(MP_QSTR_OSError));
     mp_map_add_qstr(&map_builtins, MP_QSTR_AssertionError, mp_obj_new_exception(MP_QSTR_AssertionError));
+    mp_map_add_qstr(&map_builtins, MP_QSTR_NotImplementedError, mp_obj_new_exception(MP_QSTR_NotImplementedError));
     mp_map_add_qstr(&map_builtins, MP_QSTR_StopIteration, mp_obj_new_exception(MP_QSTR_StopIteration));
 
     // built-in objects
diff --git a/py/sequence.c b/py/sequence.c
index 74b4fcfdf8..d8cfd9f3e9 100644
--- a/py/sequence.c
+++ b/py/sequence.c
@@ -91,3 +91,88 @@ bool mp_seq_cmp_bytes(int op, const byte *data1, uint len1, const byte *data2, u
     }
     return true;
 }
+
+// Special-case comparison function for sequences of mp_obj_t
+// Don't pass RT_BINARY_OP_NOT_EQUAL here
+bool mp_seq_cmp_objs(int op, const mp_obj_t *items1, uint len1, const mp_obj_t *items2, uint len2) {
+    if (op == RT_BINARY_OP_EQUAL && len1 != len2) {
+        return false;
+    }
+
+    // Let's deal only with > & >=
+    if (op == RT_BINARY_OP_LESS || op == RT_BINARY_OP_LESS_EQUAL) {
+        SWAP(const mp_obj_t *, items1, items2);
+        SWAP(uint, len1, len2);
+        if (op == RT_BINARY_OP_LESS) {
+            op = RT_BINARY_OP_MORE;
+        } else {
+            op = RT_BINARY_OP_MORE_EQUAL;
+        }
+    }
+
+    int len = len1 < len2 ? len1 : len2;
+    bool eq_status = true; // empty lists are equal
+    bool rel_status;
+    for (int i = 0; i < len; i++) {
+        eq_status = mp_obj_equal(items1[i], items2[i]);
+        if (op == RT_BINARY_OP_EQUAL && !eq_status) {
+            return false;
+        }
+        rel_status = (rt_binary_op(op, items1[i], items2[i]) == mp_const_true);
+        if (!eq_status && !rel_status) {
+            return false;
+        }
+    }
+
+    // If we had tie in the last element...
+    if (eq_status) {
+        // ... and we have lists of different lengths...
+        if (len1 != len2) {
+            if (len1 < len2) {
+                // ... then longer list length wins (we deal only with >)
+                return false;
+            }
+        } else if (op == RT_BINARY_OP_MORE) {
+            // Otherwise, if we have strict relation, equality means failure
+            return false;
+        }
+    }
+
+    return true;
+}
+
+// Special-case of index() which searches for mp_obj_t
+mp_obj_t mp_seq_index_obj(const mp_obj_t *items, uint len, uint n_args, const mp_obj_t *args) {
+    mp_obj_type_t *type = mp_obj_get_type(args[0]);
+    mp_obj_t *value = args[1];
+    uint start = 0;
+    uint stop = len;
+
+    if (n_args >= 3) {
+        start = mp_get_index(type, len, args[2]);
+        if (n_args >= 4) {
+            stop = mp_get_index(type, len, args[3]);
+        }
+    }
+
+    for (uint i = start; i < stop; i++) {
+        if (mp_obj_equal(items[i], value)) {
+            // Common sense says this cannot overflow small int
+            return MP_OBJ_NEW_SMALL_INT(i);
+        }
+    }
+
+    nlr_jump(mp_obj_new_exception_msg(MP_QSTR_ValueError, "object not in sequence"));
+}
+
+mp_obj_t mp_seq_count_obj(const mp_obj_t *items, uint len, mp_obj_t value) {
+    uint count = 0;
+    for (uint i = 0; i < len; i++) {
+         if (mp_obj_equal(items[i], value)) {
+              count++;
+         }
+    }
+
+    // Common sense says this cannot overflow small int
+    return MP_OBJ_NEW_SMALL_INT(count);
+}
diff --git a/tests/basics/tuple1.py b/tests/basics/tuple1.py
index b64720b3eb..53eac2a306 100644
--- a/tests/basics/tuple1.py
+++ b/tests/basics/tuple1.py
@@ -14,3 +14,5 @@ except AttributeError:
 print(x[1:])
 print(x[:-1])
 print(x[2:3])
+
+print(x + (10, 100, 10000))
diff --git a/tests/basics/tuple_compare.py b/tests/basics/tuple_compare.py
new file mode 100644
index 0000000000..8bdb2bcf98
--- /dev/null
+++ b/tests/basics/tuple_compare.py
@@ -0,0 +1,50 @@
+print(() == ())
+print(() > ())
+print(() < ())
+print(() == (1,))
+print((1,) == ())
+print(() > (1,))
+print((1,) > ())
+print(() < (1,))
+print((1,) < ())
+print(() >= (1,))
+print((1,) >= ())
+print(() <= (1,))
+print((1,) <= ())
+
+print((1,) == (1,))
+print((1,) != (1,))
+print((1,) == (2,))
+print((1,) == (1, 0,))
+
+print((1,) > (1,))
+print((1,) > (2,))
+print((2,) > (1,))
+print((1, 0,) > (1,))
+print((1, -1,) > (1,))
+print((1,) > (1, 0,))
+print((1,) > (1, -1,))
+
+print((1,) < (1,))
+print((2,) < (1,))
+print((1,) < (2,))
+print((1,) < (1, 0,))
+print((1,) < (1, -1,))
+print((1, 0,) < (1,))
+print((1, -1,) < (1,))
+
+print((1,) >= (1,))
+print((1,) >= (2,))
+print((2,) >= (1,))
+print((1, 0,) >= (1,))
+print((1, -1,) >= (1,))
+print((1,) >= (1, 0,))
+print((1,) >= (1, -1,))
+
+print((1,) <= (1,))
+print((2,) <= (1,))
+print((1,) <= (2,))
+print((1,) <= (1, 0,))
+print((1,) <= (1, -1,))
+print((1, 0,) <= (1,))
+print((1, -1,) <= (1,))
diff --git a/tests/basics/tuple_count.py b/tests/basics/tuple_count.py
new file mode 100644
index 0000000000..7f42ede28c
--- /dev/null
+++ b/tests/basics/tuple_count.py
@@ -0,0 +1,5 @@
+a = (1, 2, 3)
+a = a + a + a
+b = (0, 0, a, 0, a, 0)
+print(a.count(2))
+print(b.count(a))
diff --git a/tests/basics/tuple_index.py b/tests/basics/tuple_index.py
new file mode 100644
index 0000000000..1aef100d78
--- /dev/null
+++ b/tests/basics/tuple_index.py
@@ -0,0 +1,24 @@
+a = (1, 2, 3)
+print(a.index(1))
+print(a.index(2))
+print(a.index(3))
+print(a.index(3, 2))
+try:
+    print(a.index(3, 2, 2))
+except ValueError:
+    print("Raised ValueError")
+else:
+    print("Did not raise ValueError")
+
+a = a + a
+b = (0, 0, a)
+print(a.index(2))
+print(b.index(a))
+print(a.index(2, 2))
+
+try:
+    a.index(2, 2, 2)
+except ValueError:
+    print("Raised ValueError")
+else:
+    print("Did not raise ValueError")
diff --git a/tests/basics/tuple_mult.py b/tests/basics/tuple_mult.py
new file mode 100644
index 0000000000..f8350f2f27
--- /dev/null
+++ b/tests/basics/tuple_mult.py
@@ -0,0 +1,4 @@
+print((0,) * 5)
+a = (1, 2, 3)
+c = a * 3
+print(c)
diff --git a/tests/io/file-stdio.py b/tests/io/file-stdio.py
new file mode 100644
index 0000000000..cbdb070163
--- /dev/null
+++ b/tests/io/file-stdio.py
@@ -0,0 +1,4 @@
+import sys
+
+print(sys.stdin.fileno())
+print(sys.stdout.fileno())
diff --git a/unix/ffi.c b/unix/ffi.c
index b40e9a4ee6..b83fc120a9 100644
--- a/unix/ffi.c
+++ b/unix/ffi.c
@@ -71,7 +71,7 @@ static ffi_type *get_ffi_type(mp_obj_t o_in)
 {
     if (MP_OBJ_IS_STR(o_in)) {
         uint len;
-        const byte *s = mp_obj_str_get_data(o_in, &len);
+        const char *s = mp_obj_str_get_data(o_in, &len);
         ffi_type *t = char2ffi_type(*s);
         if (t != NULL) {
             return t;
diff --git a/unix/file.c b/unix/file.c
index 5249b5bba3..7bbe3bfd00 100644
--- a/unix/file.c
+++ b/unix/file.c
@@ -48,6 +48,12 @@ static mp_obj_t fdfile_close(mp_obj_t self_in) {
 }
 static MP_DEFINE_CONST_FUN_OBJ_1(fdfile_close_obj, fdfile_close);
 
+static mp_obj_t fdfile_fileno(mp_obj_t self_in) {
+    mp_obj_fdfile_t *self = self_in;
+    return MP_OBJ_NEW_SMALL_INT(self->fd);
+}
+static MP_DEFINE_CONST_FUN_OBJ_1(fdfile_fileno_obj, fdfile_fileno);
+
 static mp_obj_fdfile_t *fdfile_new(int fd) {
     mp_obj_fdfile_t *o = m_new_obj(mp_obj_fdfile_t);
     o->base.type = &rawfile_type;
@@ -99,6 +105,7 @@ static mp_obj_t fdfile_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const
 }
 
 static const mp_method_t rawfile_type_methods[] = {
+        { "fileno", &fdfile_fileno_obj },
         { "read", &mp_stream_read_obj },
         { "readall", &mp_stream_readall_obj },
         { "readline", &mp_stream_unbuffered_readline_obj},
diff --git a/unix/main.c b/unix/main.c
index 9fb25a43e2..5fdfbc36aa 100644
--- a/unix/main.c
+++ b/unix/main.c
@@ -23,7 +23,7 @@
 
 extern const mp_obj_fun_native_t mp_builtin_open_obj;
 void file_init();
-void rawsocket_init();
+void microsocket_init();
 void time_init();
 void ffi_init();
 
@@ -265,7 +265,7 @@ int main(int argc, char **argv) {
     rt_store_name(qstr_from_str("qstr_info"), rt_make_function_n(0, qstr_info));
 
     file_init();
-    rawsocket_init();
+    microsocket_init();
 #if MICROPY_MOD_TIME
     time_init();
 #endif
diff --git a/unix/qstrdefsport.h b/unix/qstrdefsport.h
index 598f23bef2..9f28c607e2 100644
--- a/unix/qstrdefsport.h
+++ b/unix/qstrdefsport.h
@@ -12,4 +12,4 @@ Q(htons)
 Q(inet_aton)
 Q(gethostbyname)
 Q(getaddrinfo)
-Q(rawsocket)
+Q(microsocket)
diff --git a/unix/socket.c b/unix/socket.c
index 28749f3bef..eb4ea1e043 100644
--- a/unix/socket.c
+++ b/unix/socket.c
@@ -24,7 +24,7 @@ typedef struct _mp_obj_socket_t {
     int fd;
 } mp_obj_socket_t;
 
-static const mp_obj_type_t rawsocket_type;
+static const mp_obj_type_t microsocket_type;
 
 // Helper functions
 #define RAISE_ERRNO(err_flag, error_val) \
@@ -48,7 +48,7 @@ error:
 
 static mp_obj_socket_t *socket_new(int fd) {
     mp_obj_socket_t *o = m_new_obj(mp_obj_socket_t);
-    o->base.type = &rawsocket_type;
+    o->base.type = &microsocket_type;
     o->fd = fd;
     return o;
 }
@@ -84,6 +84,12 @@ static mp_obj_t socket_close(mp_obj_t self_in) {
 }
 static MP_DEFINE_CONST_FUN_OBJ_1(socket_close_obj, socket_close);
 
+static mp_obj_t socket_fileno(mp_obj_t self_in) {
+    mp_obj_socket_t *self = self_in;
+    return MP_OBJ_NEW_SMALL_INT(self->fd);
+}
+static MP_DEFINE_CONST_FUN_OBJ_1(socket_fileno_obj, socket_fileno);
+
 static mp_obj_t socket_connect(mp_obj_t self_in, mp_obj_t addr_in) {
     mp_obj_socket_t *self = self_in;
     buffer_info_t bufinfo;
@@ -208,7 +214,9 @@ static mp_obj_t socket_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const
     return socket_new(fd);
 }
 
-static const mp_method_t rawsocket_type_methods[] = {
+static const mp_method_t microsocket_type_methods[] = {
+        { "fileno", &socket_fileno_obj },
+        { "makefile", &mp_identity_obj },
         { "read", &mp_stream_read_obj },
         { "readall", &mp_stream_readall_obj },
         { "readline", &mp_stream_unbuffered_readline_obj},
@@ -228,7 +236,7 @@ static const mp_method_t rawsocket_type_methods[] = {
         { NULL, NULL },
 };
 
-static const mp_obj_type_t rawsocket_type = {
+static const mp_obj_type_t microsocket_type = {
     { &mp_const_type },
     "socket",
     .print = socket_print,
@@ -239,7 +247,7 @@ static const mp_obj_type_t rawsocket_type = {
         .read = socket_read,
         .write = socket_write,
     },
-    .methods = rawsocket_type_methods,
+    .methods = microsocket_type_methods,
 };
 
 static mp_obj_t mod_socket_htons(mp_obj_t arg) {
@@ -283,8 +291,8 @@ static mp_obj_t mod_socket_getaddrinfo(uint n_args, const mp_obj_t *args) {
     // getaddrinfo accepts port in string notation, so however
     // it may seem stupid, we need to convert int to str
     if (MP_OBJ_IS_SMALL_INT(args[1])) {
-        int port = MP_OBJ_SMALL_INT_VALUE(args[1]);
-        static char buf[20];
+        int port = (short)MP_OBJ_SMALL_INT_VALUE(args[1]);
+        char buf[6];
         sprintf(buf, "%d", port);
         serv = buf;
     } else {
@@ -325,7 +333,7 @@ extern mp_obj_type_t sockaddr_in_type;
 
 #define C(name) { #name, name }
 
-struct sym_entry {
+static const struct sym_entry {
     const char *sym;
     int val;
 } constants[] = {
@@ -351,9 +359,9 @@ struct sym_entry {
 
 #undef C
 
-void rawsocket_init() {
-    mp_obj_t m = mp_obj_new_module(MP_QSTR_rawsocket);
-    rt_store_attr(m, MP_QSTR_socket, (mp_obj_t)&rawsocket_type);
+void microsocket_init() {
+    mp_obj_t m = mp_obj_new_module(MP_QSTR_microsocket);
+    rt_store_attr(m, MP_QSTR_socket, (mp_obj_t)&microsocket_type);
 #if MICROPY_SOCKET_EXTRA
     rt_store_attr(m, MP_QSTR_sockaddr_in, (mp_obj_t)&sockaddr_in_type);
     rt_store_attr(m, MP_QSTR_htons, (mp_obj_t)&mod_socket_htons_obj);
@@ -361,7 +369,7 @@ void rawsocket_init() {
     rt_store_attr(m, MP_QSTR_gethostbyname, (mp_obj_t)&mod_socket_gethostbyname_obj);
 #endif
     rt_store_attr(m, MP_QSTR_getaddrinfo, (mp_obj_t)&mod_socket_getaddrinfo_obj);
-    for (struct sym_entry *p = constants; p->sym != NULL; p++) {
+    for (const struct sym_entry *p = constants; p->sym != NULL; p++) {
         rt_store_attr(m, QSTR_FROM_STR_STATIC(p->sym), MP_OBJ_NEW_SMALL_INT((machine_int_t)p->val));
     }
 }
diff --git a/unix/time.c b/unix/time.c
index 9d8cf497c4..6dba9f0d09 100644
--- a/unix/time.c
+++ b/unix/time.c
@@ -1,5 +1,7 @@
 #include <string.h>
 #include <time.h>
+#include <sys/time.h>
+#include <math.h>
 
 #include "misc.h"
 #include "mpconfig.h"
@@ -23,8 +25,24 @@ static mp_obj_t mod_time_clock() {
 }
 static MP_DEFINE_CONST_FUN_OBJ_0(mod_time_clock_obj, mod_time_clock);
 
+static mp_obj_t mod_time_sleep(mp_obj_t arg) {
+#if MICROPY_ENABLE_FLOAT
+    struct timeval tv;
+    machine_float_t val = mp_obj_get_float(arg);
+    double ipart;
+    tv.tv_usec = round(modf(val, &ipart) * 1000000);
+    tv.tv_sec = ipart;
+    select(0, NULL, NULL, NULL, &tv);
+#else
+    sleep(mp_obj_get_int(arg));
+#endif
+    return mp_const_none;
+}
+static MP_DEFINE_CONST_FUN_OBJ_1(mod_time_sleep_obj, mod_time_sleep);
+
 void time_init() {
     mp_obj_t m = mp_obj_new_module(QSTR_FROM_STR_STATIC("time"));
     rt_store_attr(m, QSTR_FROM_STR_STATIC("time"), (mp_obj_t)&mod_time_time_obj);
     rt_store_attr(m, QSTR_FROM_STR_STATIC("clock"), (mp_obj_t)&mod_time_clock_obj);
+    rt_store_attr(m, QSTR_FROM_STR_STATIC("sleep"), (mp_obj_t)&mod_time_sleep_obj);
 }