struct.error: 'h' format requires -32768 number 32767

参考：https://blog.csdn.net/weiwangchao_/article/details/80395941

struct.error: 'h' format requires -32768 <= number <= 32767

换成了"H",H长度是0-65536，发送图片暂时够用。

代码如下：

#发送websocket server报文部分
def sendMessage(self, message):
msgLen = len(message)
backMsgList = []
backMsgList.append(struct.pack('B', 129+1))

if msgLen <= 125:
backMsgList.append(struct.pack('b', msgLen))
elif msgLen <=65535:
backMsgList.append(struct.pack('b', 126))
backMsgList.append(struct.pack('>H', msgLen))
elif msgLen <= (2^64-1):
backMsgList.append(struct.pack('b', 127))
backMsgList.append(struct.pack('>h', msgLen))
else :
print("the message is too long to send in a time")
return
message_byte = bytes()
print(type(backMsgList[0]))
for c in backMsgList:
# if type(c) != bytes:
# print(bytes(c, encoding="utf8"))
message_byte += c
message_byte += bytes(message, encoding="utf8")
#print("message_str : ", str(message_byte))
# print("message_byte : ", bytes(message_str, encoding="utf8"))
# print(message_str[0], message_str[4:])
# self.connection.send(bytes("0x810x010x63", encoding="utf8"))
self.connection.send(message_byte)

解决方法：

def send_img(msg):token = b'\x82'length = len(msg)if length <= 125:token += struct.pack('B', length)elif length <= 0xFFFF:token += struct.pack('!BH', 126, length)else:token += struct.pack('!BQ', 127, length)message_byte = token + msgglobal conn_dict_facefor connection in conn_dict_face.values():if message_byte != None:try:#if not connection._closed:timestr = datetime.datetime.now().strftime('%H:%M:%S:%f')connection.send(message_byte)except Exception as e:log_info('send error', e)connection.close()else:log_info("msg_test is none")

1. struct模块
struct.pack(fmt, value1, value2)
fmt为由特定字符组成的字符串，函数功能为，将python数据类型value1,value2转化为C数据类型

fmt字符类型：

Format C Type Python type Standard size
x pad byte no value
c char bytes of length 1
b signed char integer 1
B unsigned char integer 1
? _Bool bool 1
h short integer 2
H unsigned short integer 2
i int integer 4
I unsigned int integer 4
l long integer 4
L unsigned long integer 4
q long long integer 8
Q unsigned long long integer 8
n ssize_t integer
N size_t integer
e (7) float 2
f float float 4
d double float 8
s char[] bytes
p char[] bytes
P void * integer (6)

struct.unpack(fmt, buffer)

struct.error: 'h' format requires -32768 number 32767相关推荐

header = struct.pack(!i, n) struct.error: 'i' format requires -2147483648 number 2147483647
环境:ubuntu python3.6 在多进程之间交换(传递)大量数据时报错. 报错: Traceback (most recent call last): File "/usr/li ...
struct.error: ushort format requires 0 ＜= number ＜= 0xffff
这个问题是python struct 转bytes 的时候下面的就会报错 import struct print(struct.pack("H",65536)) H 的取值范围是 ...
python 网络编程 struct解包时报错 struct.error: unpack requires a buffer of 4 bytes
报错信息 D:\Donta_tensorflow-yolov3\python\python.exe D:/10_gitee/network_programming/避障程序信号及图像接收端/20100 ...
7.python wave.Error: unknown format: 65534 声音文件可以播放python读取不了
# @File :sound_cut.py # @Author: Wang Zhimin # @Date : 2019/10/12 import wave r= wave.open("D:/ ...
VS2010编译错误：fatal error C1189: #error : This file requires _WIN32_WINNT to be #defined at least to 0x
编译VTK,MFC时,mfc对版本的要求问题: 解决方法原文链接:http://www.cnblogs.com/madhenry/archive/2011/06/29/2093678.html 最近拿 ...
Matlab一个错误引发的血案：??? Error using == str2num Requires string or character array input....
Matlab总遇到一些神奇的问题,让人摸不着头脑.昨天编写程序的时候遇到一个让我十分火大的问题,也是自己的matlab基础不好吧. 先描述一下问题,再GUI界面有个listbox,Tag属性是'lis ...
fatal error C1189: #error : This file requires _WIN32_WINNT to be #defined at least to 0x0403. Valu
1. 错误 fatal error C1189: #error : This file requires _WIN32_WINNT to be #defined at least to 0x0403 ...
mysql报错-ERROR 1206 (HY000)- The total number of locks exceeds the lock table size-的解决方法
mysql报错"ERROR 1206 (HY000): The total number of locks exceeds the lock table size"的解决方法问题 ...
docker Cannot start container [8] System error: exec format error
docker Cannot start container [8] System error: exec format error 学习了:https://www.aliyun.com/jiaoch ...

struct.error: 'h' format requires -32768 number 32767

struct.error: 'h' format requires -32768 number 32767相关推荐

最新文章

热门文章