invalid length of startup packet

[francoricci]

• asyncpg version: 0.16.0
• PostgreSQL version: 9.6.8
• **Do you use a PostgreSQL SaaS? NO
• Python version: 3.6.5
• Platform: FreeBSD 11.2
• Do you use pgbouncer?: NO
• Did you install asyncpg with pip?: YES
• If you built asyncpg locally, which version of Cython did you use?:
• Can the issue be reproduced under both asyncio and
  uvloop?: YES

The following script :

import asyncio
import asyncpg
import uvloop

async def run():
conn = await asyncpg.connect(host='127.0.0.1', port='5432', user='root', password='pippo', database='postgres', ssl=None)
values = await conn.fetch("SELECT * FROM pg_type")
await conn.close()
asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
loop = asyncio.get_event_loop()
loop.run_until_complete(run())

returns:

asyncpg.exceptions.ConnectionDoesNotExistError: connection was closed in the middle of operation
and postgresql:
LOG: invalid length of startup packet

With previous asyncpg version 0.13.0 all works well

[francoricci]

I compiled the master version and now all works well.
thanks a lot

[fpierfed]

• asyncpg version: 0.18.2 and master
• PostgreSQL version: 9.6.10 and 10.6
• Do you use a PostgreSQL SaaS? NO
• Python version: 3.6.6
• Platform: FreeBSD 11.2
• Do you use pgbouncer?: NO
• Did you install asyncpg with pip?: YES (used setup.py for master)
• If you built asyncpg locally, which version of Cython did you use?: 0.29
• Can the issue be reproduced under both asyncio and uvloop?: YES

Sorry to reopen this issue, but I am seeing the same error with the latest released asyncpg (0.18.2) as well as today's master.

Here is the postgres log

DEBUG:  00000: forked new backend, pid=4606 socket=9
LOCATION:  BackendStartup, postmaster.c:4038
LOG:  00000: connection received: host=[local]
LOCATION:  BackendInitialize, postmaster.c:4192
LOG:  08P01: invalid length of startup packet
LOCATION:  ProcessStartupPacket, postmaster.c:1942
DEBUG:  00000: shmem_exit(0): 0 before_shmem_exit callbacks to make
LOCATION:  shmem_exit, ipc.c:226
DEBUG:  00000: shmem_exit(0): 0 on_shmem_exit callbacks to make
LOCATION:  shmem_exit, ipc.c:259
DEBUG:  00000: proc_exit(0): 1 callbacks to make
LOCATION:  proc_exit_prepare, ipc.c:188
DEBUG:  00000: exit(0)
LOCATION:  proc_exit, ipc.c:141
DEBUG:  00000: shmem_exit(-1): 0 before_shmem_exit callbacks to make
LOCATION:  shmem_exit, ipc.c:226
DEBUG:  00000: shmem_exit(-1): 0 on_shmem_exit callbacks to make
LOCATION:  shmem_exit, ipc.c:259
DEBUG:  00000: proc_exit(-1): 0 callbacks to make
LOCATION:  proc_exit_prepare, ipc.c:188
DEBUG:  00000: reaping dead processes
LOCATION:  reaper, postmaster.c:2779
DEBUG:  00000: server process (PID 4606) exited with exit code 0
LOCATION:  LogChildExit, postmaster.c:3552

[francoricci]

Error start from version >= 1.18.0