在win下用Libev作TCP server的问题

[guolisen]

用Libev作TCP server的问题

我载winsock下用libev处理连接（select），可是每次建立TCP连接，libev都回调3次，请问是正常的吗，回调3次，其中只有一次accept返回成功。返回的那个recv也读不到数据返回-1.

下面是libev的回调，我在accpet后起线程去recv。

void io_callback(LoopHandle loop, CBHandle w, int revents)
{

	SOCKET fd = w->fd;
#ifdef LWDP_PLATFORM_DEF_WIN32
	fd = _get_osfhandle (w->fd);
#endif

    struct sockaddr_in addr;
    int addr_size = sizeof(addr);
	int* accept_conn = (int*)malloc(sizeof(int));
	while ((*accept_conn = accept(fd, (struct sockaddr *)&addr, &addr_size)) < 0)
	{
		if (errno == EAGAIN) 
		{
			//these are transient, so don't log anything.
			continue; 
		}
		else
		{
			LWDP_LOG_PRINT("TCPSERVER", LWDP_LOG_MGR::ERR, 
						   "Accept Error.");
			return;
		}
	}

	
	pthread_t t;
	int result;

	result = pthread_create(&t, NULL, thread_callback, accept_conn);
	if(result != 0){
		LWDP_LOG_PRINT("TCPSERVER", LWDP_LOG_MGR::ERR, 
					   "Can't Create Thread Ret: %d\n", result);
		return;
	}

	result = pthread_detach(t);
	if(result != 0){
		LWDP_LOG_PRINT("TCPSERVER", LWDP_LOG_MGR::ERR, 
					   "Can't Detach Thread Ret: %d\n", result);
		return;
	}
	
}

发送端非常简单就是发字符串

#include "stdafx.h"
#include <winsock2.h>
#include <windows.h>
#include <iostream>
using namespace std;
#define SERVPORT 12135 /*服务器监听端口号*/
#define DEST_IP  "127.0.0.1"
#define MAXDATASIZE 100

int _tmain(int argc, _TCHAR* argv[])
{
	int sockfd, recvbytes; 
	char buf[MAXDATASIZE];
	struct hostent *host; 
	struct sockaddr_in serv_addr; 
	struct sockaddr_in dest_addr; /* 目的地址*/  

	WORD wVersionRequested;
	WSADATA wsaData;
	int err;
	wVersionRequested = MAKEWORD(2,0);
	err = WSAStartup(wVersionRequested,&wsaData);
	if (0 != err)
	{
		cout<<"Socket failed";
		return 0;

	}
	if (LOBYTE(wsaData.wVersion)!= 2 || HIBYTE(wsaData.wVersion) != 0)
	{
		WSACleanup();
		return 0;
	}
	if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1){ 
		perror("socket创建出错！");
		exit(1);
	}
	serv_addr.sin_family=AF_INET; 
	serv_addr.sin_port=htons(SERVPORT); 
/*	serv_addr.sin_addr = *((struct in_addr *)host->h_addr);*/
	serv_addr.sin_addr.s_addr = inet_addr(DEST_IP);  
	memset( &(serv_addr.sin_zero),0,8);
	if (connect(sockfd, (struct sockaddr *) &serv_addr, \
		sizeof(struct sockaddr)) == -1) { 
			perror("connect出错！");
			//exit(1);
	}
	char szMsg[] = "hao";
	int nlen = sizeof(serv_addr);
	char* msg = "Hello, are connected!";
	int uIndex = 0;
	while (1)
	{
		Sleep(5000);
		if (send(sockfd, msg, sizeof(msg), 0) == -1)		
		{
			cout<<WSAGetLastError()<<endl;
			closesocket(sockfd); 
			if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1){ 
				perror("socket创建出错！");
				exit(1);
			}
			if (connect(sockfd, (struct sockaddr *) &serv_addr, \
				sizeof(struct sockaddr)) == -1) 
			{ 
				perror("connect出错！");
				continue;
			}
		}
		else
		{
			cout<<uIndex++<<":an TCP package is sended"<<endl;
			continue;
		}
		if ((recvbytes=recv(sockfd, buf, MAXDATASIZE, 0)) !=-1)
		{ 
			buf[recvbytes] = '\0'; 
			printf( "Received: %s",buf);
		}
		
	}
	
	closesocket(sockfd); 
 
	return 0;
}

[guolisen]

查了一下，recv返回的是WSAEWOULDBLOCK，但是不停循环recv就卡死在那了