我有以下代码：
文件为principal.c，它具有main函数和其他方法。
在main（）中：
connectAll(&NUM_THREADS);
printf("TOTAL clients that to connect %d\n",NUM_THREADS);
pthread_t thread[NUM_THREADS];
pthread_attr_t attr;
/* Initialize and set thread detached attribute */
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
paramThread params[NUM_THREADS];
for(t=0;t<NUM_THREADS;t++)
{
printf("What's IP [%s] to connected now? %d\n",regIPConnected[t].ip,regIPConnected[t].idSocket);
params[t].idSocket=regIPConnected[t].idSocket;
params[t].idThread=t;
rc = pthread_create(&(thread[t]), &attr,conectaThread, &(params[t]));
if (rc)
{
printf("ERROR; return code from pthread_create() is %d\n", rc);
}
}//END FOR
/* Free attribute and wait for the other threads */
pthread_attr_destroy(&attr);
for(t=0; t<NUM_THREADS; t++)
{
rc = pthread_join(thread[t], &status);
if (rc<0) {
printf("ERROR; return code from pthread_join() is %d\n", rc);
}
printf("Main: completed join with thread %ld having a status of %ld\n",t,(long)status);
}//END FOR
printf("Main: program completed. Exiting.\n");
pthread_exit(NULL);
}
void *conectaThread (void *arg){
paramThread* params = (paramThread*) &arg;
int idSocket=params->idSocket;
long tid=params->idThread;
printf("Thread %ld starting...\n",tid);
printf ("ID SOCKET THREAD %d\n",idSocket);
while (1) /* Run forever */
{
int state=readSocket(idSocket,"status\n");
...
}
paramThread的结构是：
typedef struct
{
int idSocket;
long idThread;
void (*pf)(int, long);
} paramThread;
另一个名为socket.c的文件
int openSocketInet (char *servIP,unsigned short servPort)
{
int optval,statusSocket=0;
socklen_t optlen = sizeof(optval);
/* Create the socket, using TCP */
socketClient = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
printf("OK/NOK socket %d",socketClient);
if (socketClient<0)
{
switch (errno)
{
/*differents cases of errno*/
default:
perror("socket()");
statusSocket= -1;
}//END SWITCH
}//END IF
/* Check the status for the keepalive option */
if(getsockopt(socketClient, SOL_SOCKET, SO_KEEPALIVE, &optval, &optlen) < 0 && statusSocket==0) {
statusSocket=checkGET_SETSockOpt(socketClient,1);
printf("Error getsockopt() is %d\n",statusSocket);
}//END IF
printf("SO_KEEPALIVE is %s\n", (optval ? "ON" : "OFF"));
int fl = fcntl(socketClient, F_GETFL);
fcntl(socketClient, F_SETFL, fl | O_NONBLOCK);
/* Set the option active */
optval = 1; //-->TRUE
optlen = sizeof(optval);
if(setsockopt(socketClient, SOL_SOCKET, SO_KEEPALIVE, &optval, optlen) < 0 && statusSocket==0) {
statusSocket=checkGET_SETSockOpt(socketClient,0);
printf("Error setsockopt() is %d\n",statusSocket);
}//END IF
printf("SO_KEEPALIVE set on socket\n");
/* Check the status again */
if(getsockopt(socketClient, SOL_SOCKET, SO_KEEPALIVE, &optval, &optlen) < 0 && statusSocket==0) {
statusSocket=checkGET_SETSockOpt(socketClient,1);
printf("Error getsockopt() is %d\n",statusSocket);
}//END IF
printf("SO_KEEPALIVE is %s\n", (optval ? "ON" : "OFF"));
if (connect(socketClient, (struct sockaddr *)&addressServer, sizeof(addressServer)) < 0 && statusSocket==0)
{
switch (errno)
{
/*diffents cases of errno to connect()*/
default:
perror("connect()");
statusSocket= -1;
}//END SWITCH
}//END IF
/* Construct the server address structure */
bzero(&addressServer, sizeof(addressServer)); /* Hay que poner todo a ceros */
addressServer.sin_family = AF_INET; /* Internet address family */
addressServer.sin_port = htons(servPort); /* puerto en formato de red */
/* dirección IP en formato de red */
int errInetAton=inet_aton(servIP, &addressServer.sin_addr);
if (errInetAton<0 && statusSocket==0)
{
printf("Fail the conversion of IP\n",servIP);
perror("inet_aton() Motive");
statusSocket= -1;
}//END IF
printf("The IP %s to connect with sock %d\n",servIP,socketClient);
//To return identify a socket or fail
if (statusSocket<0)
return statusSocket;
else
return socketClient;
}
当我运行结果时：
socket(): Success --> to sock 3 SO_KEEPALIVE is OFF SO_KEEPALIVE set on socket SO_KEEPALIVE is ON The IP x.x.x.x to connect with sock 3 socket(): Illegal seek --> to sock 4 SO_KEEPALIVE is OFF SO_KEEPALIVE set on socket SO_KEEPALIVE is ON The IP y.y.y.y to connect with sock 4
我希望我可以连接到具有相同套接字的不同IP
谢谢，问题是另一个问题：
What's IP [x.x.x.x] to connected now? 3
What's IP [y.y.y.y] to connected now? 4
What's IP [z.z.z.z] to connected now? 5
Out for
Thread 5 starting...
ID SOCKET THREAD 5
Method READ! Send to socket id [5] and data is '[status]'
STATUS THREAD 0
Thread 5 starting...
ID SOCKET THREAD 5
Method READ! Send to socket id [5] and data is '[status]'
Thread 5 starting...
ID SOCKET THREAD 5
Method READ! Send to socket id [5] and data is '[status]'
STATUS THREAD 0
Info: (-3.35 dB)
Method WRITE! Send to socket id [5] and data is '[outlevel 0:50
]'
El conector está marcado como no bloqueante y la operación solicitada lo bloquearÃa.
Method WRITE! Error send() is 0
Level modify of Vol 50%
Info: (-24.13 dB)
Level modify of Vol 50%
Info: (-52.60 dB)
Method WRITE! Send to socket id [5] and data is '[outlevel 0:50
]'
El conector está marcado como no bloqueante y la operación solicitada lo bloquearÃa.
Method WRITE! Error send() is 0
Level modify of Vol 50%
Method READ! Send to socket id [5] and data is '[status]'
hi0!
send(): No route to host
Method READ! Error send() is -1
STATUS THREAD -1
Method READ! Send to socket id [5] and data is '[status]'
#
但是套接字号不正确应该是3或4，下一个代码：
在main（）
中...
for(t=0;t<NUM_THREADS;t++)
{
printf("What's IP [%s] to connected now? %d\n",regIPConnected[t].ip,regIPConnected[t].idSocket);
idSocket = regIPConnected [T] .idSocket;
rc = pthread_create(&(thread[t]), &attr,conectaThread,&idSocket);
if (rc)
{
printf("ERROR; return code from pthread_create() is %d\n", rc);
}
}//END FOR
printf("Out for\n\n!");
/* Free attribute and wait for the other threads */
pthread_attr_destroy(&attr);
for(t=0; t<NUM_THREADS; t++)
{
rc = pthread_join(thread[t], &status);
if (rc<0) {
printf("ERROR; return code from pthread_join() is %d\n", rc);
}
printf("Main: completed join with thread %ld having a status of %ld\n",t,(long)status);
}//END FOR
printf("Main: program completed. Exiting.\n");
pthread_exit(NULL);
}
其他代码相同。为什么不让第一个插座“3”并获得完成插座5？以及为什么要完成线程？
由于
答案 0 :(得分：1)
尝试注释掉这一行
printf("OK/NOK socket %d",socketClient);
看看你是否走得更远。
详情请参阅我对OP的评论。
答案 1 :(得分：0)
我没有看到你在套接字初始化函数中的任何地方声明socketClient。如果它是全局的，它应该由互斥锁或其他一些序列化访问它的机制来保护。
一般来说，
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
在正常情况下不应该失败。您已超出系统fd / socket配额，或者更可能是缺少与套接字的正确访问同步。
另外，如上所述，代码太多，上下文太少。