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| author | Alex Gaynor <alex.gaynor@gmail.com> | 2023-01-10 07:51:23 -0500 |
|---|---|---|
| committer | Alex Gaynor <alex.gaynor@gmail.com> | 2023-01-10 07:52:27 -0500 |
| commit | 1cd22f097aca2667cbfde6320178e2354d07199b (patch) | |
| tree | d326a6d543068c608142b9a5da931bd9475bdad0 /paramiko/sftp.py | |
| parent | a9ead5ec359038efc96603ad28b0f2eb9255ec3b (diff) | |
| download | paramiko-1cd22f097aca2667cbfde6320178e2354d07199b.tar.gz | |
Improve performance by reducing expensive bytes conversion
In two core parts of the codebase, complex type-switch based code is used to convert a value to bytes. However, in all cases (except for one, fixed in this PR), the caller is specifying a Message instance. We can make this code much simpler by directly calling the correct method on Message.
In #2110 this is measured to massively speed up large SFTP transfers.
Diffstat (limited to 'paramiko/sftp.py')
| -rw-r--r-- | paramiko/sftp.py | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/paramiko/sftp.py b/paramiko/sftp.py index 2e9dff66..144edd4a 100644 --- a/paramiko/sftp.py +++ b/paramiko/sftp.py @@ -129,7 +129,9 @@ class BaseSFTP(object): # ...internals... def _send_version(self): - self._send_packet(CMD_INIT, struct.pack(">I", _VERSION)) + m = Message() + m.add_int(_VERSION) + self._send_packet(CMD_INIT, m) t, data = self._read_packet() if t != CMD_VERSION: raise SFTPError("Incompatible sftp protocol") @@ -190,7 +192,7 @@ class BaseSFTP(object): return out def _send_packet(self, t, packet): - packet = util.asbytes(packet) + packet = packet.asbytes() out = struct.pack(">I", len(packet) + 1) + byte_chr(t) + packet if self.ultra_debug: self._log(DEBUG, util.format_binary(out, "OUT: ")) |