tHandle client requesting header out of range - electrum-personal-server - Maximally lightweight electrum server for a single user
HTML git clone https://git.parazyd.org/electrum-personal-server
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---
DIR commit 839c222880efce312363a89068c6cd724c3b267b
DIR parent 9388442a35fe2e185af698b6eb4a2ec2c8ebe2e4
HTML Author: chris-belcher <chris-belcher@users.noreply.github.com>
Date: Sun, 19 Aug 2018 17:04:46 +0100
Handle client requesting header out of range
Solves issue #49. If a client requests blockchain.blocks.headers
with start_height beyond the chain length then the server would
have crashed.
Diffstat:
M server.py | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
---
DIR diff --git a/server.py b/server.py
t@@ -294,7 +294,10 @@ def check_for_new_blockchain_tip(rpc, raw):
def get_block_headers_hex(rpc, start_height, count):
#read count number of headers starting from start_height
result = bytearray()
- the_hash = rpc.call("getblockhash", [start_height])
+ try:
+ the_hash = rpc.call("getblockhash", [start_height])
+ except JsonRpcError as e:
+ return "", 0
for i in range(count):
header = rpc.call("getblockheader", [the_hash])
#add header hex to result
t@@ -310,7 +313,7 @@ def get_block_headers_hex(rpc, start_height, count):
if "nextblockhash" not in header:
break
the_hash = header["nextblockhash"]
- return binascii.hexlify(result).decode("utf-8"), len(result)/80
+ return binascii.hexlify(result).decode("utf-8"), int(len(result)/80)
def create_server_socket(hostport):
server_sock = socket.socket()