[Bug 10648] New: Async WSASend does not send all bytes.

Summary: Async WSASend does not send all bytes. Product: Wine Version: 0.9.5. Platform: Other OS/Version: Linux Status: UNCONFIRMED Severity: enhancement Priority: P2 Component: test AssignedTo: [email protected] ReportedBy: [email protected]

On Server sending 1500 bytes with non-blocked WSASend and 2 WSABUFFERS will transfer only 1452 bytes. On client WSARecv called again will be blocked and does not receive the the remaining bytes.

The completion port receives event on transfered 1452 bytes, and there is no more followed events on transfered the last 8 bytes.

OS: Ubuntu 7.10

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wine-bugs＠winehq.org

28 Apr 28 Apr

9:29 p.m.

New subject: [Bug 10648] Async WSASend does not send all bytes.

Austin English [email protected] changed:

What |Removed |Added ---------------------------------------------------------------------------- Component|testcases |-unknown

--- Comment #1 from Austin English [email protected] 2008-04-28 16:29:05 --- Can you upload a small test case (source and binary) showing this problem?

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wine-bugs＠winehq.org

3 Nov 3 Nov

2:44 a.m.

New subject: [Bug 10648] Async WSASend does not send all bytes.

--- Comment #2 from Andrew Nguyen [email protected] 2008-11-02 20:44:29 --- This bug seems to be abandoned.

wine-bugs＠winehq.org

3:47 a.m.

New subject: [Bug 10648] Async WSASend does not send all bytes.

Austin English [email protected] changed:

--- Comment #3 from Austin English [email protected] 2008-11-02 21:47:58 --- Abandoned.

wine-bugs＠winehq.org

3:48 a.m.

New subject: [Bug 10648] Async WSASend does not send all bytes.

Austin English [email protected] changed:

What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |CLOSED

--- Comment #4 from Austin English [email protected] 2008-11-02 21:48:04 --- Closing.

WineHQ Bugzilla

1 Mar 1 Mar

6:02 p.m.

New subject: [Bug 10648] Async WSASend does not send all bytes.

[1] https://github.com/grpc/grpc/pull/28432/files

Jinoh Kang [email protected] changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected]

--- Comment #5 from Jinoh Kang [email protected] --- Requesting to reopen the ticket.

The gRPC library relies on the all-or-none behaviour of nonblocking send() on Winsock. All applications relying on gRPC thus fails to transmit RPC packets properly.

It's possible to patch gRPC instead [1] so that it properly handles partial writes, but it is not always feasible in proprietary software applications.

Possible directions for the fix include:

- In sock_send(), test if it's possible to actually send the full stream data before calling send(). - On partial write, queue up the rest of the buffer and report success.

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WineHQ Bugzilla

7:43 p.m.

New subject: [Bug 10648] gRPC library fails to send RPC packets correctly (nonblocking send() should not perform partial writes)

Zebediah Figura [email protected] changed:

--- Comment #6 from Zebediah Figura [email protected] --- (In reply to Jinoh Kang from comment #5)

Requesting to reopen the ticket.

The gRPC library relies on the all-or-none behaviour of nonblocking send() on Winsock. All applications relying on gRPC thus fails to transmit RPC packets properly.

It's possible to patch gRPC instead [1] so that it properly handles partial writes, but it is not always feasible in proprietary software applications.

I've reopened, but fixing applications is preferable if at all possible. It's not clear that any other applications actually care about short write behaviour.

Possible directions for the fix include:

In sock_send(), test if it's possible to actually send the full stream

data before calling send().

How?

On partial write, queue up the rest of the buffer and report success.

This seems to me like the only option feasible right now, although it's obviously far from ideal.

Of course, we could also try to introduce an extra socket option or flag into the kernel.

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WineHQ Bugzilla

11 Mar 11 Mar

8:29 p.m.

New subject: [Bug 10648] gRPC library fails to send RPC packets correctly (nonblocking send() should not perform partial writes)

--- Comment #7 from Jinoh Kang [email protected] --- (In reply to Zebediah Figura from comment #6)

(In reply to Jinoh Kang from comment #5)

...
Requesting to reopen the ticket.

The gRPC library relies on the all-or-none behaviour of nonblocking send() on Winsock. All applications relying on gRPC thus fails to transmit RPC packets properly.

It's possible to patch gRPC instead [1] so that it properly handles partial writes, but it is not always feasible in proprietary software applications.

I've reopened, but fixing applications is preferable if at all possible. It's not clear that any other applications actually care about short write behaviour.

...
Possible directions for the fix include:

In sock_send(), test if it's possible to actually send the full stream

data before calling send().

How?

Heuristics. Actually it would require *both* remedies in order for the final solution to be plausible at all.

...

On partial write, queue up the rest of the buffer and report success.

This seems to me like the only option feasible right now, although it's obviously far from ideal.

Combined with heuristics above, I think this won't happen that much frequently in practice.

Of course, we could also try to introduce an extra socket option or flag into the kernel.

Linux maybe, but Darwin...

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WineHQ Bugzilla

8:53 p.m.

New subject: [Bug 10648] gRPC library fails to send RPC packets correctly (nonblocking send() should not perform partial writes)

--- Comment #8 from Zebediah Figura [email protected] --- (In reply to Jinoh Kang from comment #7)

(In reply to Zebediah Figura from comment #6)

...
(In reply to Jinoh Kang from comment #5)

...

In sock_send(), test if it's possible to actually send the full stream

data before calling send().

How?

Heuristics. Actually it would require *both* remedies in order for the final solution to be plausible at all.

What heuristics do you have in mind, exactly?

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WineHQ Bugzilla

13 Sep 13 Sep

12:34 p.m.

New subject: [Bug 10648] gRPC library fails to send RPC packets correctly (nonblocking send() should not perform partial writes)

--- Comment #9 from Jinoh Kang [email protected] --- A recently posted MR, https://gitlab.winehq.org/wine/wine/-/merge_requests/6490, should fix this bug. The MR is for "JOY OF PROGRAMMING - Software Engineering Simulator."

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WineHQ Bugzilla

18 Sep 18 Sep

11:39 p.m.

New subject: [Bug 10648] gRPC library fails to send RPC packets correctly (nonblocking send() should not perform partial writes)

--- Comment #10 from Jinoh Kang [email protected] --- This should be fixed in 535c8a84c1ec4391786d8be6f87d683e20223b12.

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WineHQ Bugzilla

20 Sep 20 Sep

3:59 p.m.

New subject: [Bug 10648] gRPC library fails to send RPC packets correctly (nonblocking send() should not perform partial writes)

Paul Gofman [email protected] changed:

--- Comment #11 from Paul Gofman [email protected] --- Marking resolved.

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WineHQ Bugzilla

4 p.m.

New subject: [Bug 10648] gRPC library fails to send RPC packets correctly (nonblocking send() should not perform partial writes)

Paul Gofman [email protected] changed:

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WineHQ Bugzilla

8:48 p.m.

New subject: [Bug 10648] gRPC library fails to send RPC packets correctly (nonblocking send() should not perform partial writes)