Linux UNIX TCP/IP :read: 传输端点未连接读取: 传输端点未连接
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UNIX TCP/IP :read: Transport endpoint is not connected read: Transport endpoint is not connected
提问by thlgood
I'm trying to use the following program to show the message recived form port 8888.
I compiled the following code without any error and warning.
我正在尝试使用以下程序来显示收到的消息 port 8888。我编译了以下代码，没有任何错误和警告。
After I run it, I use a broswer to open 127.0.0.1:8888
运行后，我用浏览器打开 127.0.0.1:8888
Then, the console showed:
然后，控制台显示：
read: Transport endpoint is not connected
read: Transport endpoint is not connected
I debug it, but I can't find the reason.
我调试它，但我找不到原因。
platform
平台
Linux kernel 3.x Ubuntu 64bit
Linux 内核 3.x Ubuntu 64 位
code
代码
#include <stdio.h>
#include <netdb.h>
#include <string.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <unistd.h>
#include <netinet/in.h>
//#include <errno.h>
int main(int argc, char *argv[])
{
int sock;
char buf[BUFSIZ+1];
buf[BUFSIZ] = 'int readSocket = accept(sock ...);
if (readSocket == -1)
{
// error
}
else
{
// set up stuff and while loop
read_len = read(readSocket....); // << Note which socket is being read
// other stuff
}
';
uint16_t port = (uint16_t)atoi("8888");
struct sockaddr_in ser;
memset(&ser, 0, sizeof(ser));
ser.sin_port = htons(port);
ser.sin_addr.s_addr = htonl(INADDR_ANY);
ser.sin_family = AF_INET;
sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sock < 0)
{
perror("socket");
return -7;
}
/*Bind*/
if (bind(sock, (struct sockaddr *)&ser, sizeof(ser)) < 0)
return -2;
/*listen*/
if (listen(sock, 5) < 0)
return -3;
/*Accpet*/
struct sockaddr_in cliAddr;
socklen_t cliLen = sizeof(cliAddr);
if (accept(sock, (struct sockaddr*)&cliAddr, &cliLen) < 0)
{
perror("accept");
exit(1);
}
int read_len = 0;
int i = 0;
/*read and print*/
while(1)
{
read_len = read(sock, buf, BUFSIZ);
if(read_len < 0)
{
perror("read");
break;
}
else
{
/*print buf*/
while(i++ < read_len)
putchar(buf[i-1]);
putchar('\n');
}
if(read_len != BUFSIZ)
break;
}
return 0;
}
If you found any bad habits in my code, please tell me.
如果您在我的代码中发现任何不良习惯，请告诉我。
回答by JeremyP
You're trying to read the wrong socket. accept()returns a new socket and it is that new socket you should be reading the data from and writing data to.
您正在尝试读取错误的套接字。 accept()返回一个新的套接字，它是您应该从中读取数据和向其中写入数据的新套接字。
Your code should do something more like this:
您的代码应该更像这样：
##代码##