当我使用client1 = HTTPClient(‘192.168.1.2′,’3’)时,它只能工作,但当我使用如下两者时:
client1 = HTTPClient(‘192.168.1.2′,’3’)
client2 = HTTPClient(‘192.168.1.3′,’3’)
client1 = HTTPClient(‘192.168.1.2′,’3’)
client2 = HTTPClient(‘192.168.1.3′,’3’)
然后整个事情变得非常缓慢,有时其中一个失败.如何确保client1和client2连接发送速度足够快?
import asyncore,socket class HTTPClient(asyncore.dispatcher): def __init__(self,host,path): asyncore.dispatcher.__init__(self) self.create_socket(socket.AF_INET,socket.soCK_STREAM) self.settimeout(10) try: self.connect( (host,8888) ) except: print 'unable to connect' pass self.buffer = path def handle_connect(self): pass def handle_close(self): self.close() def handle_read(self): print self.recv(8192) def writable(self): return (len(self.buffer) > 0) def handle_write(self): sent = self.send(self.buffer) self.buffer = self.buffer[sent:] client1 = HTTPClient('192.168.1.2','3') client2 = HTTPClient('192.168.1.3','3') asyncore.loop()
编辑:尝试也线程但相同的结果
import asyncore,socket import threading import os class HTTPClient(asyncore.dispatcher): def __init__(self,8888) ) except: print 'unable to connect' pass self.buffer = path def handle_connect(self): pass def handle_close(self): self.close() def handle_read(self): print self.recv(8192) def writable(self): return (len(self.buffer) > 0) def handle_write(self): sent = self.send(self.buffer) self.buffer = self.buffer[sent:] def t1(): client1 = HTTPClient('192.168.1.161','3') def t2(): client2 = HTTPClient('192.168.1.163','3') t0 = threading.Thread(target=t1()) t0.start() t0.join() t0 = threading.Thread(target=t2()) t0.start() t0.join() asyncore.loop()
解决方法
您的代码中可能存在多个问题,例如,在指定目标时删除括号:Thread(target = t1).如果f是函数,则f()立即调用它.您还将asyncore与阻塞代码和多个线程混合使用.
如果你想同时建立几个http连接;您可以使用线程池:
import urllib2 from multiprocessing.dummy import Pool # use threads def fetch(url): try: return url,urllib2.urlopen(url).read(),None except Exception as e: return url,None,str(e) urls = ['http://example.com',...] pool = Pool(20) # use no more than 20 concurrent connections for url,result,error in pool.imap_unordered(fetch,urls): if error is None: print(url + " done") else: print(url + " error: " + error)