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88 lines
1.9 KiB
Markdown
88 lines
1.9 KiB
Markdown
## TCP/UDP 客户端扩展函数
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### 1.iostream\_tcp\_create
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> 创建 TCP 客户端输入输出流对象。
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----------------------------
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#### 原型
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```js
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iostream_tcp_create(host, port) => object
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```
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### 2.iostream\_udp\_create
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> 创建 UDP 客户端输入输出流对象。
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----------------------------
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#### 原型
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```js
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iostream_udp_create(host, port) => object
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```
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### 完整示例
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```js
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//
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//start tcp echo server first
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//socat -v tcp-l:1234,fork exec:'/bin/cat'
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//
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a = iostream_tcp_create("localhost", 1234)
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b = iostream_get_ostream(a)
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c = iostream_get_istream(a)
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assert(ostream_write_uint8(b, 1) == 1)
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assert(ostream_write_uint16(b, 2)== 2)
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assert(ostream_write_uint32(b, 3) == 4)
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assert(ostream_write_uint64(b, 4) == 8)
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assert(ostream_write_float(b, 5) == 4)
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assert(ostream_write_double(b, 6) == 8)
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assert(ostream_write_string(b, "hello\n") == 6)
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assert(istream_read_uint8(c) == 1)
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assert(istream_read_uint16(c) == 2)
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assert(istream_read_uint32(c) == 3)
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assert(istream_read_uint64(c) == 4)
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assert(istream_read_float(c) == 5)
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assert(istream_read_double(c) == 6)
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assert(istream_read_string(c, 6) == "hello\n")
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unset(c)
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unset(b)
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unset(a)
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```
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```js
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//
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// start udp echo server first
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// ./bin/udp_recv 4000
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//
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a = iostream_udp_create("localhost", 4000)
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b = iostream_get_ostream(a)
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c = iostream_get_istream(a)
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assert(ostream_write_uint8(b, 1) == 1)
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assert(ostream_write_uint16(b, 2)== 2)
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assert(ostream_write_uint32(b, 3) == 4)
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assert(ostream_write_uint64(b, 4) == 8)
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assert(ostream_write_float(b, 5) == 4)
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assert(ostream_write_double(b, 6) == 8)
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assert(ostream_write_string(b, "hello\n") == 6)
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assert(istream_read_uint8(c) == 1)
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assert(istream_read_uint16(c) == 2)
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assert(istream_read_uint32(c) == 3)
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assert(istream_read_uint64(c) == 4)
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assert(istream_read_float(c) == 5)
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assert(istream_read_double(c) == 6)
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assert(istream_read_string(c, 6) == "hello\n")
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unset(c)
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unset(b)
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unset(a)
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```
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