WebSocket实现原理

_WS_OUT uint64_t *out_size) {

struct timeval tv;

char mask[4];

unsigned int mask_int;

unsigned int payload_len_bits;

unsigned int payload_bit_offset = 6;

unsigned int extend_payload_len_bits, i;

unsigned long long frame_size;

const int MASK_BIT_LEN = 4;

gettimeofday(&tv, NULL);

srand(tv.tv_usec * tv.tv_sec);

mask_int = rand();

memcpy(mask, &mask_int, 4);

/**

* payload_len bits

* ref to https://tools.ietf.org/html/rfc6455#section-5.2

* If 0-125, that is the payload length

* If payload length is equals 126, the following 2 bytes interpreted as a

* 16-bit unsigned integer are the payload length

* If 127, the following 8 bytes interpreted as a 64-bit unsigned integer (the

* most significant bit MUST be 0) are the payload length.

if (payload_size 125) {

// consts of ((fin + rsv1/2/3 + opcode) + payload-len bits + mask bit len + payload len)

extend_payload_len_bits = 0;

frame_size = 1 + 1 + MASK_BIT_LEN + payload_size;

payload_len_bits = payload_size;

} else if (payload_size > 125 && payload_size 0xffff) {

　　推荐阅读

　　Linux_基于Docker搭建Redis集群

应用redis-6379为主机，其余两台为大年夜机应用 docker exec -ti 容器ID /bin/bash 分别进入三个Redis容器进入容器后，应用 redis-cli 敕令，连接redis办事端连接办过后，应用 info replication 查看当前机械的角色未>>>详细阅读

地址：http://www.17bianji.com/lsqh/36156.html