Failed to send large batch of messages to Event Hub with Qpid Proton-C

[jihong <zu...@hotmail.com>]

Greetings,
  I tried to send messages in batch asynchronously to Azure Event Hub using
Qpid Proton C. It seems that sending will fail when the batch size is
greater than 50. The protocol traces show the handshake will fail when batch
size exceeds 50. Below are protocol traces for failed sending:

[0x7521c0]:  -> SASL
[0x7521c0]:0 -> @sasl-init(65) [mechanism=:PLAIN,
initial-response=b"\x00sendRule\x00Z0ipoEPvXzQVKw++q+5cChHLJhCgjXOtX+QTn0QSo3A="]
[0x7521c0]:0 -> @open(16) [container-id=""]
[0x7521c0]:0 -> @close(24) [error=@error(29)
[condition=:"amqp:connection:framing-error", description="SSL Failure:
error:140780E5:SSL routines:SSL23_READ:ssl handshake failure"]]
[0x7521c0]:  <- EOS
[0x7521c0]:  -> EOS

   By contrast, when message batch size is 50, the handshake can succeed:

[0x1e361c0]:  -> SASL
[0x1e361c0]:0 -> @sasl-init(65) [mechanism=:PLAIN,
initial-response=b"\x00sendRule\x00Z0ipoEPvXzQVKw++q+5cChHLJhCgjXOtX+QTn0QSo3A="]
[0x1e361c0]:0 <- @sasl-mechanisms(64)
[sasl-server-mechanisms=@PN_SYMBOL[:PLAIN, :EXTERNAL]]


[0x1e361c0]:0 <- @sasl-outcome(68) [code=0, additional-data=b"Welcome!"]
[0x1e361c0]:  -> AMQP
[0x1e361c0]:0 -> @open(16)
[container-id="85b207fe-68de-4bf2-a551-fe32dbe12c87",
hostname="bluebeam-ns.servicebus.windows.net"]
[0x1e361c0]:0 -> @begin(17) [next-outgoing-id=0, incoming-window=2147483647,
outgoing-window=50]
[0x1e361c0]:0 -> @attach(18) [name="sender-xxx", handle=0, role=false,
snd-settle-mode=1, rcv-settle-mode=0, source=@source(40)
[address="bluebeam", durable=0, timeout=0, dynamic=false],
target=@target(41) [address="bluebeam", durable=0, timeout=0,
dynamic=false], initial-delivery-count=0]

[0x1e361c0]:0 <- @open(16)
[container-id="e64e1a369a8542c299eb4acd0adea354_G38", max-frame-size=65536,
channel-max=4999, idle-time-out=240000]
[0x1e361c0]:0 <- @begin(17) [remote-channel=0, next-outgoing-id=1,
incoming-window=50, outgoing-window=5000, handle-max=255]
[0x1e361c0]:0 <- @attach(18) [name="sender-xxx", handle=0, role=true,
snd-settle-mode=1, rcv-settle-mode=0, source=@source(40)
[address="bluebeam", durable=0, timeout=0, dynamic=false],
target=@target(41) [address="bluebeam", durable=0, timeout=0,
dynamic=false], max-message-size=262144,
properties={:"com.microsoft:tracking-id"="e64e1a369a8542c299eb4acd0adea354_G38"}]
[0x1e361c0]:0 <- @flow(19) [next-incoming-id=0, incoming-window=50,
next-outgoing-id=1, outgoing-window=5000, handle=0, delivery-count=0,
link-credit=300, available=0, echo=false]
[0x1e361c0]:0 -> @transfer(20) [handle=0, delivery-id=0,
delivery-tag=b"\x00\x00\x00\x00\x00\x00\x00\x00", message-format=0,
settled=false, more=false] (349)
"\x00Sp\xd0\x00\x00\x00\x0b\x00\x00\x00\x05BP\x04@BR\x00\x00Ss\xd0\x00\x00\x00p\x00\x00\x00\x0d@@\xa13amqps://bluebeam-ns.servicebus.windows.net/bluebeam@@@\xa3\x19application/octect-stream@\x83\x00\x00\x00\x00\x00\x00\x00\x00\x83\x00\x00\x00\x00\x00\x00\x00\x00@R\x00@\x00Su\xa0\xcd{"version":
"0.1.0", "eventType": "lift-status", "deviceId": "ELEV-2000-MON-2000",
"timestamp": "2015-07-15 15:39:15 UTC", "liftId": "ELEV-2000", "liftStatus":
"ascending", "curFloor": 10, "weight": 268.0}"

   What's the reason behind this? And do I miss some configuration options?
Thanks!



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