小编Sin*_*230的帖子

我正在尝试使用OpenSSL创建一个非阻塞套接字，以便可以遍历SSL_read（）直到没有剩余数据，然后中断该循环。经过大量工作，我终于使连接正常工作，但是现在对于前一千次迭代，SSL_read（）将返回-1。之后，它将为我提供套接字上的实际数据。SSL_read（）也不返回读取的准确字节数，即使它正在读取正确的字节，它也总是说-1。我能够使其在使用阻塞套接字的情况下正常工作，但非阻塞似乎有问题...

char *sslRead (connection *c)
{
const int readSize = 1024;
char *rc = NULL;
int r;
int received = -1, count = 0;
int TotalReceived = 0, ReallocSize = 0;
char buffer[1024];

if (c)
{
    while (1)
    {

        received = SSL_read (c->sslHandle, buffer, readSize);

    buffer[received] = '\0';

        TotalReceived += received;
        printf("Buffsize - %i - %s \n", received, buffer);


        if (received <= 0)
        {

            // this line added per advice of Eric Tsui but does not
            // change behaviour 
            received …